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US20080269321A1 - Therapeutic Combinations for the Treatment or Prevention of Depression - Google Patents

Therapeutic Combinations for the Treatment or Prevention of Depression Download PDF

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Publication number
US20080269321A1
US20080269321A1 US12/130,665 US13066508A US2008269321A1 US 20080269321 A1 US20080269321 A1 US 20080269321A1 US 13066508 A US13066508 A US 13066508A US 2008269321 A1 US2008269321 A1 US 2008269321A1
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dihydro
benzofuran
methyl
amine
methanamine
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Janet Jandura
Sharon Rosenzweig-Lipson
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Wyeth LLC
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K31/00—Medicinal preparations containing organic active ingredients
    • A61K31/33—Heterocyclic compounds
    • A61K31/335—Heterocyclic compounds having oxygen as the only ring hetero atom, e.g. fungichromin
    • A61K31/34—Heterocyclic compounds having oxygen as the only ring hetero atom, e.g. fungichromin having five-membered rings with one oxygen as the only ring hetero atom, e.g. isosorbide
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K31/00—Medicinal preparations containing organic active ingredients
    • A61K31/33—Heterocyclic compounds
    • A61K31/335—Heterocyclic compounds having oxygen as the only ring hetero atom, e.g. fungichromin
    • A61K31/34—Heterocyclic compounds having oxygen as the only ring hetero atom, e.g. fungichromin having five-membered rings with one oxygen as the only ring hetero atom, e.g. isosorbide
    • A61K31/343—Heterocyclic compounds having oxygen as the only ring hetero atom, e.g. fungichromin having five-membered rings with one oxygen as the only ring hetero atom, e.g. isosorbide condensed with a carbocyclic ring, e.g. coumaran, bufuralol, befunolol, clobenfurol, amiodarone
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K31/00—Medicinal preparations containing organic active ingredients
    • A61K31/33—Heterocyclic compounds
    • A61K31/38—Heterocyclic compounds having sulfur as a ring hetero atom
    • A61K31/381—Heterocyclic compounds having sulfur as a ring hetero atom having five-membered rings
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K31/00—Medicinal preparations containing organic active ingredients
    • A61K31/33—Heterocyclic compounds
    • A61K31/395—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
    • A61K31/435—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with one nitrogen as the only ring hetero atom
    • A61K31/44—Non condensed pyridines; Hydrogenated derivatives thereof
    • A61K31/4427—Non condensed pyridines; Hydrogenated derivatives thereof containing further heterocyclic ring systems
    • A61K31/4433—Non condensed pyridines; Hydrogenated derivatives thereof containing further heterocyclic ring systems containing a six-membered ring with oxygen as a ring hetero atom
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K45/00—Medicinal preparations containing active ingredients not provided for in groups A61K31/00 - A61K41/00
    • A61K45/06—Mixtures of active ingredients without chemical characterisation, e.g. antiphlogistics and cardiaca
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P25/00—Drugs for disorders of the nervous system
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P25/00—Drugs for disorders of the nervous system
    • A61P25/18—Antipsychotics, i.e. neuroleptics; Drugs for mania or schizophrenia
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P25/00—Drugs for disorders of the nervous system
    • A61P25/22—Anxiolytics
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P25/00—Drugs for disorders of the nervous system
    • A61P25/24—Antidepressants
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P25/00—Drugs for disorders of the nervous system
    • A61P25/28—Drugs for disorders of the nervous system for treating neurodegenerative disorders of the central nervous system, e.g. nootropic agents, cognition enhancers, drugs for treating Alzheimer's disease or other forms of dementia
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P43/00—Drugs for specific purposes, not provided for in groups A61P1/00-A61P41/00

Definitions

  • the present invention relates to therapeutic combinations of compounds useful for the treatment or prophylaxis of depression, to pharmaceutical compositions containing such combinations, and to their use in the treatment or prophylaxis of depression.
  • depression-related mood disorders such as dysthymia, seasonal affective disorder, and postpartum depression, bipolar disorder, anxiety disorder, posttraumatic stress disorder, panic disorder, and obsessive-compulsive disorder.
  • SRIs seratonin reuptake inhibitors
  • NERIs norepinephrine reuptake inhibitors
  • SNRIs serotonin-norepinephrine reuptake inhibitors
  • MAOIs monoamine oxidase inhibitors
  • PDE4 inhibitors phosphodiesterase-4 inhibitors
  • Traditional therapies can also have significant side effects. For example, more than a third of patients taking SRIs experience sexual dysfunction. Other problematic side effects include gastrointestinal disturbances, often manifested as nausea and occasional vomiting, agitation, insomnia, weight gain, onset of diabetes, prolongation of the heart rate corrected interval (QTc), agranylocytosis, etc. Depressive patients who also suffer from psychotic disorders (e.g., schizophrenia) also sometimes suffer extrapyramidal side effects. These side effects often discourage patients from following their recommended therapeutic regimen.
  • gastrointestinal disturbances often manifested as nausea and occasional vomiting, agitation, insomnia, weight gain, onset of diabetes, prolongation of the heart rate corrected interval (QTc), agranylocytosis, etc.
  • Depressive patients who also suffer from psychotic disorders (e.g., schizophrenia) also sometimes suffer extrapyramidal side effects. These side effects often discourage patients from following their recommended therapeutic regimen.
  • the present invention provides new combination therapies for the treatment of depression.
  • the present invention provides combinations of a compound of formula I:
  • FIG. 1 shows the effects of Compound 1, alone or in combination with paroxetine, in the tail suspension test.
  • the present invention encompasses the finding that certain 5-HT 2C receptor agonists can be usefully combined with one or more anti-depressive agents in the treatment or prevention of depression or other mood disorders.
  • the present invention provides combinations of 5-HT 2C receptor agonists, or partial agonists, of formula I:
  • the present invention utilizes 5-HT 2C receptor agonists of formula I:
  • lower alkyl refers to a hydrocarbon chain having up to 4 carbon atoms, preferably 1 to 3 carbon atoms, and more preferably 1 to 2 carbon atoms.
  • alkyl includes, but is not limited to, straight and branched chains such as methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, sec-butyl, or t-butyl.
  • alkoxy refers to the group —OR, wherein R is a lower alkyl group.
  • halogen or “halo,” as used herein, refer to chlorine, bromine, fluorine or iodine.
  • haloalkyl refers to an alkyl group, as defined herein, that has one or more halogen substituents. In certain embodiment, every hydrogen atom on said alkyl group is replaced by a halogen atom.
  • haloalkyl groups include —CF 3 .
  • haloalkoxy groups include —OCF 3 .
  • an individual active agent that is therapeutically effective in the context of an inventive combination may well differ from the amount of that agent that is therapeutically effective when the agent is delivered alone. In some embodiments of the invention, a lower amount is required to therapeutic effectiveness in the context of an inventive combination than is required to achieve therapeutic effectiveness alone. Those of ordinary skill will further appreciate that a different amount of a particular compound or combination may be required to achieve therapeutic effectiveness in the context of different formulations, modes of delivery and/or administration regimen.
  • pharmaceutically acceptable salts or “pharmaceutically acceptable salt” refers to salts derived from treating a compound of formula I with an organic or inorganic acid such as, for example, acetic, lactic, citric, cinnamic, tartaric, succinic, fumaric, maleic, malonic, mandelic, malic, oxalic, propionic, hydrochloric, hydrobromic, phosphoric, nitric, sulfuric, glycolic, pyruvic, methanesulfonic, ethanesulfonic, toluenesulfonic, salicylic, benzoic, or similarly known acceptable acids.
  • the present invention provides the hydrochloride salt of a compound of formula I.
  • patient refers to a mammal. In certain embodiments, the term “patient” refers to a human.
  • administer refers to either directly administering a compound or composition to a patient, or administering a prodrug derivative or analog of the compound to the patient, which will form an equivalent amount of the active compound or substance within the patient's body.
  • the compounds of formula I as defined above or in classes and subclasses as described herein, have affinity for and agonist or partial agonist activity at the 2C subtype of brain serotonin receptors.
  • each of the R 2 and R 3 groups of formula I is independently hydrogen, methyl, ethyl, 2-fluoroethyl, 2,2-difluoroethyl or cyclopropyl.
  • one of the R 2 and R 3 groups of formula I is hydrogen and the other R 2 or R 3 group of formula I is hydrogen, methyl, ethyl, 2-fluoroethyl, 2,2-difluoroethyl or cyclopropyl.
  • neither of the R 2 and R 3 groups of formula I is hydrogen.
  • both of the R 2 and R 3 groups of formula I are hydrogen.
  • each R 1 group of formula I is independently hydrogen, halogen, OH, lower alkyl, lower alkoxy, lower haloalkyl, lower haloalkoxy, or CN.
  • each R 1 group of formula I is hydrogen.
  • at least one of R 1 group of formula I is halogen.
  • y is 1 and R 1 is halogen.
  • y is 1 and R 1 is at the 5-position of the dihydrobenzofuran ring of formula I, thus forming a compound of formula Ia:
  • R 1 , R 2 , R 3 , Ar, and n are as defined above for compounds of formula I and in classes and subclasses as described above and herein.
  • y is 1 and R 1 is at the 6-position of the dihydrobenzofuran ring of formula I, thus forming a compound of formula Ia′:
  • R 1 , R 2 , R 3 , Ar, and n are as defined above for compounds of formula I and in classes and subclasses as described above and herein.
  • the Ar group of formula I is thienyl, furyl, pyridyl, or phenyl, wherein Ar is optionally substituted with one or more substituents independently selected from halogen, OH, lower alkyl, lower alkoxy, haloalkyl, haloalkoxy, or CN.
  • the Ar group of formula I is unsubstituted phenyl.
  • the Ar group of formula I is phenyl with at least one substituent in the ortho position.
  • the Ar group of formula I is phenyl with at least one substituent in the ortho position selected from halogen, lower alkyl, lower alkoxy, or trifluoromethyl.
  • the present invention provides a compound of formula I wherein Ar is phenyl di-substituted in the ortho and meta positions with independently selected halogen lower alkyl, or lower alkoxy.
  • the present invention provides a compound of formula I wherein Ar is phenyl di-substituted in the ortho positions with independently selected halogen lower alkyl, or lower alkoxy.
  • Exemplary substituents on the phenyl moiety of the Ar group of formula I include OMe, fluoro, chloro, methyl, and trifluoromethyl.
  • the present invention provides combinations including a compound of formula Ia′ wherein Ar is phenyl with one substituent in the ortho position selected from halogen, lower alkyl, lower alkoxy, or trifluoromethyl.
  • Ar is phenyl substituted with one R x substituent in the ortho-position, thus forming a compound of formula Ib, or with an R x substituent in both ortho-positions, thus forming a compound of formula Ic:
  • each R 1 , R 2 , R 3 , R x , y and n are as defined above for compounds of formula I and in classes and subclasses as described above and herein.
  • the Ar group of formula I is selected from the following:
  • the present invention provides combinations including a compound of formula Id or Ie:
  • each R 1 , R 2 , R x , y and n are as defined above for compounds of formula I and in classes and subclasses as described above and herein.
  • the present invention provides combinations including a compound of formula If or Ig:
  • each R 1 , R 2 , R 3 , R x , and n are as defined above for compounds of formula I and in classes and subclasses as described above and herein.
  • the present invention provides a compound of formula Ih or Ii:
  • each R 1 , R 2 , R 3 , R x , and n are as defined above for compounds of formula I and in classes and subclasses as described above and herein.
  • the present invention provides combinations including a compound of formula VIa or VIb:
  • each R 1 , R 2 , R 3 , R x , y and n are as defined above for compounds of formula I and in classes and subclasses as described above and herein.
  • the present invention provides a compound of formula VIc or VId:
  • each R 1 , R 2 , R 3 , R x , y and n are as defined above for compounds of formula I and in classes and subclasses as described above and herein.
  • an enantiomer substantially free of the corresponding enantiomer refers to a compound which is isolated or separated via separation techniques or prepared free of the corresponding enantiomer. “Substantially free,” as used herein, means that the compound is made up of a significantly greater proportion of one enantiomer. In certain embodiments the compound is made up of at least about 90% by weight of a preferred enantiomer. In other embodiments of the invention, the compound is made up of at least about 99% by weight of a preferred enantiomer.
  • Preferred enantiomers may be isolated from racemic mixtures by any method known to those skilled in the art, including chiral high pressure liquid chromatography (HPLC) and the formation and crystallization of chiral salts or prepared by methods described herein. See, for example, Jacques, et al., Enantiomers, Racemates and Resolutions (Wiley Interscience, New York, 1981); Wilen, et al., Tetrahedron 33:2725 (1977); Eliel, Stereochemistry of Carbon Compounds (McGraw-Hill, NY, 1962); Wilen, Tables of Resolving Agents and Optical Resolutions p. 268 (E. L. Eliel, Ed., Univ. of Notre Dame Press, Notre Dame, Ind. 1972).
  • Atropisomers of the present compounds may exist.
  • the present invention thus encompasses atropisomeric forms of compounds of formula I as defined above, and in classes and subclasses described above and herein.
  • references to a compound herein is intended to include reference to any and all related forms such as polymorphs, hydrates, etc.
  • compounds may be provided as pro-drugs or other forms converted into the active agent during manufacture, processing, formulation, delivery, or in the body.
  • radiolabelled forms of the compounds receited herein including, for example, those where the radiolabels are selected from as 3 H, 11 C, 14 C, 18 F, 123 I and 125 I.
  • radiolabelled compounds are useful as research and diagnostic tools in metabolism pharmacokinetics studies and in binding assays in both animals and humans.
  • exemplary compounds of formula I are as set forth in Table 1-a, below.
  • compounds of the present invention are administered in combination with one or more antidepressive agents.
  • suitable antidepressant agents include, for example, serotonin reuptake inhibitors (SRIs), norepinephrine reuptake inhibitors (NRIs), combined serotonin-norepinephrine reuptake inhibitors (SNRIs), monoamine oxidase inhibitors (MAOIs), reversible inhibitors of monoamine oxidase (RIMAs), phosphodiesterase-4 (PDE4) inhibitors, corticotropin releasing factor (CRF) antagonists, alpha.-adrenoreceptor antagonists or other compounds including atypical antidepressants.
  • SRIs serotonin reuptake inhibitors
  • NRIs norepinephrine reuptake inhibitors
  • SNRIs combined serotonin-norepinephrine reuptake inhibitors
  • MAOIs monoamine oxidase inhibitors
  • RIMAs
  • Additional antidepressants for administering in combination with compounds of the present invention include triple uptake inhibitors such as DOV 216303 and DOV 21947 . . . ; melatonin agonists such as agomelotine, super neurotransmitter uptake blockers (SNUBs; e.g., NS-2389 from GlaxoSmithKline and Neurosearch; (R)-DDMA from Sepracor), and/or substance P/neurokinin receptor antagonists (e.g., aprepitant/MK-869 from Merck; NKP-608 from Novartis; CPI-122721 from Pfizer; R673 from Roche; TAK637 from Takeda; and GW-97599 from GlaxoSmithKline).
  • triple uptake inhibitors such as DOV 216303 and DOV 21947 . . .
  • melatonin agonists such as agomelotine, super neurotransmitter uptake blockers (SNUBs; e.g., NS-
  • antidepressant agents that may be used in the present invention are noradrenergic and specific serotonergic antidepressants (NaSSAs), such as mirtazepine (see, for example, U.S. Pat. No. 5,178,878, the entire contents of which are incorporated herein by reference).
  • NaSSAs noradrenergic and specific serotonergic antidepressants
  • Suitable NRIs that may be used in the present invention include tertiary amine tricyclics and secondary amine tricyclics.
  • Suitable examples of tertiary amine tricyclics include: amitriptyline, clomipramine, doxepin, imipramine (See U.S. Pat. No. 2,554,736, incorporated herein by reference in its entirety) and trimipramine, and pharmaceutically acceptable salts thereof.
  • Suitable examples of secondary amine tricyclics include: amoxapine, desipramine, maprotiline, nortriptyline and protriptyline, and pharmaceutically acceptable salts thereof.
  • NRI Another NRI that may be used in the present invention is reboxetine (EdronaxTM; 2-[.alpha.-(2-ethoxy)phenoxy-benzyl]morpholine, usually administered as the racemate; See U.S. Pat. No. 4,229,449, incorporated herein by reference in its entirety).
  • Suitable SSRIs that may be used in the present invention include: citalopram (1-[3-(dimethylamino)propyl]-(4-fluorophenyl)-1,3-dihydro-o-5-isobenzofurancarbonitrile; See U.S. Pat. No. 4,136,193; Christensen et al., Eur. J. Pharmacol. 41:153, 1977; Dufour et al., Int. Clin. Psychopharmacol.
  • fluoxetine N-methyl-3-(p-trifluoromethylphenoxy)-3-phenylpropylamine, marketed in the hydrochloride salt form and as the racemic mixture of its two isoforms; see, for example, U.S. Pat. No. 4,314,081; Robertson et al., J. Med. Chem.
  • paroxetine trans-( ⁇ )-3-[(1,3-benzodioxol-5-yloxy)methyl]-4-(4-fluorophenyl)piperidine; See U.S. Pat. No. 3,912,743; U.S. Pat. No. 4,007,196; Lassen, Eur. J. Pharmacol. 47:351, 1978; Hassan et al., Brit. J. Clin. Pharmacol. 19:705, 1985; Laursen et al., Acta Psychiat. Scand.
  • new 5HT 1A agonists variza, alnespirone, gepirone, sunepitron, MKC242, vilazodone, eptapirone, and ORG12962 from Organon; and pharmaceutically acceptable salts thereof.
  • Suitable MAOIs that may be used in the present invention include: isocarboxazid, phenelzine, selegiline and tranylcypromine, and pharmaceutically acceptable salts thereof.
  • Suitable reversible MAOIs that may be used in the present invention include: moclobemide (4-chloro-N-[2-(4-morpholinyl)-ethyl]benzamide; See U.S. Pat. No. 4,210,754, incorporated herein by reference in its entirety), selegiline, and pharmaceutically acceptable salts thereof.
  • Suitable SNRIs that may be used in the present invention include venlafaxine (see U.S. Pat. No. 4,535,186, incorporated herein by reference in its entirety; see also U.S. Pat. Nos. 5,916,923, 6,274,171, 6,403,120, 6,419,958, 6,444,708, each of which is incorporated herein by reference in its entirety), and pharmaceutically acceptable salts and analogs, including the O-desmethylvenlafaxine succinate salt; milnacipran (N,N-diethyl-2-aminomethyl-1-phenylcyclopropanecarboxamide; see U.S. Pat. No.
  • Suitable CRF antagonists that may be used in the present invention include those compounds described in International Patent Specification Nos. WO 94/13643, WO 94/13644, WO 94/13661, WO 94/13676 and WO 94/13677.
  • Suitable atypical antidepressants that may be used in the present invention include: buproprion (WellbutrinTM; (.+ ⁇ .)-1-(3-chlorophenyl)-2-[(1,1-dim-ethylethyl)amino]-1-propanone), lithium, nefazodone, trazodone and viloxazine, and pharmaceutically acceptable salts thereof.
  • Another suitable atypical antidepressant is sibutramine.
  • antidepressants that may be used in the present invention include, but are not limited to, adinazolam, alaproclate, alnespirone, amineptine, amitriptyline, amitriptyline/chlordiazepoxide combination, amoxapine, aprepitant, atipamezole, azamianserin, apelinaprine, befuraline, bifemelane, binodaline, bipenamol, brofaromine, buproprion, caroxazone, cericlamine, cianopramine, cimoxatone, citalopram, clemeprol, clomipramine, clovoxamine, dazepinil, deanol, demexiptiline, desipramine, O-desmethylvenlafaxine, dibenzepin, dothiepin, doxepin, droxidopa, duloxetine, elzasonan, enefexine,
  • Suitable classes of anti-anxiety agents for administering in combination with compounds of the present invention include 5-HT IA agonists or antagonists, especially 5-HT IA partial agonists, neurokinin recepter (NK) antagonists (e.g., saredutant and osanetant) and corticotropin releasing factor (CRF) antagonists.
  • Suitable 5-HT 1A receptor agonists or antagonists that may be used in the present invention include, in particular, the 5-HT IA receptor partial agonists buspirone, flesinoxan, gepirone and ipsapirone, and pharmaceutically acceptable salts thereof.
  • An example of a compound with 5-HT IA receptor antagonist/partial agonist activity is pindolol.
  • new 5HT 1A agonists variza, alnespirone, gepirone, sunepitron, MKC242, vilazodone, eptapirone, and ORG12962 from Organon; new 5HT 1A antagonists such as robalzotan; new 5-HT 1B agonists such as elzasonan; new 5HT 2 antagonists such as YM-992 (from Yamanouchi Pharmaceuticals) and nemifitide.
  • Antidepressant agents for use in accordance with the present invention may be obtained or produced according to any available means.
  • inventive combinations may further include one or more additional pharmaceutically active agents.
  • inventive combinations may be administered in conjunction with one or more other agents that is useful in treating depression or other mood disorders.
  • inventive combinations may be administered with one or more other pharmaceutical agents active in treating any other symptom or medical condition present in the mammal that is related or unrelated to the depression or mood disorder being experienced by the mammal.
  • pharmaceutical agents include, for example, anti-angiogenic agents, anti-neoplastic agents, anti-diabetic agents, anti-infective agents, pain-relieving agents, anti-psychotic agents, gastrointestinal agents, etc., or combinations thereof.
  • adjunctive therapies typically used to enhance the effects of an antidepressant.
  • Such adjunctive agents may include, for instance, mood stabilizers (e.g., lithium, valproic acid, carbamazepine, etc.); pindolol, stimulants (e.g., methylphenidate, dextroamphetamine, etc.); or thyroid augmenting agents (e.g., T 3 ); antipsychotics, anti-anxiety agents (e.g., benzodiazepines), and/or agents that relieve sexual dysfunction (e.g., buspirone, which also has anti-anxiety effects; dopaminergic agents such as amantadine, pramipexole, etc.).
  • mood stabilizers e.g., lithium, valproic acid, carbamazepine, etc.
  • pindolol e.g., stimulants (e.g., methylphenidate, dextroamphetamine, etc.); or thyroid augmenting
  • Particular pharmaceutical agents useful in conjunction with the inventive combinations are those discussed, for example, in United States Patent Application 2003/0092770, United States Patent Application 2004/0029972, United States Patent Application 2004/00220274, United States Patent Application 2005/0054676, or United States Patent Application 2005/0069936, each of which is incorporated herein by reference in its entirety.
  • compositions according to the present invention comprise a combination according to the invention together with one or more pharmaceutically acceptable carriers or excipients and optionally other therapeutic agents.
  • the present invention thus provides a pharmaceutical composition
  • a pharmaceutical composition comprising one or more 5-HT 2C receptor agonists of formula I:
  • Agents used in inventive combinations or compositions may be administered simultaneously, in the same or different pharmaceutical formulation, or sequentially.
  • the timing of the sequential administration may desirably be selected to preserve the advantageous effects of the combination and said timing can be determined by a skilled practitioner.
  • the combinations are combined in a single unit dosage form.
  • a therapeutically effective amount of the combination will be understood to be an amount which treats, inhibits, prevents or ameliorates one or more symptoms of the depression or mood disorder in question.
  • the combination will show improved efficacy as compared with that achieved by administration of the same amount of either the compound of formula I or the antidepressant agent alone.
  • the effective amount of the combination produces fewer side effects than are observed when the antidepressant agent is administered alone at a dose that achieves substantially similar therapeutic efficacy.
  • the dosages of each of the drugs in the inventive combination may be determined by a physician and will often depend upon the specific circumstances of the depression or mood disorder, as well as the size, age and response pattern of the patient. Dosage guidelines are provided here. For the combination, the dosage guideline for each of the drugs of the combination would be considered.
  • suitable doses of compound of formula I from about 0.5 mg per day to about 500 mg per day; in some embodiments from about 1 to about 500 mg per day.
  • a suitable dose of antidepressant agent may be in the range recommended by the manufacturer or reported in the literature.
  • the antidepressant agent is used at the low end of the range recommended by the manufacturer, or even below the range, in light of synergistic benefits that can be achieved according to the present invention.
  • the following guidelines are provided for certain antidepressants useful in the practice of the present invention:
  • Amitryptiline typically about 100-300 mg/day maintenance dose
  • Buproprion from about 100 to about 300 mg/day;
  • Citalopram from about 5 to about 50 mg once/day; preferred, from about 10 to about 30 mg once/day;
  • Clomipramine typically about 100-250 mg/day maintenance dose
  • Duloxetine from about 1 to about 30 mg once/day; preferred, from about 5 to about 20 mg once/day;
  • Fluoxetine from about 1 to about 80 mg, once/day; preferred, from about 10 to about 40 mg once/day;
  • Fluvoxamine from about 20 to about 500 mg once/day; preferred, from about 50 to about 300 mg once/day;
  • Imipramine typically about 100-300 mg/day maintenance dose
  • Isocarboxazid typically about 10-20 mg/day maintenance dose
  • Maprotiline typically about 100-200 mg/day maintenance dose
  • Mianserin typically about 30-90 mg/day maintenance dose
  • Milnacipran from about 10 to about 100 mg once-twice/day; preferred, from about 25 to about 50 mg twice/day;
  • Mirtazapine typically about 14-45 mg/day maintenance dose
  • Moclobemide typically about 300-600 mg/day maintenance dose
  • Nefazodone typically about 150-300 mg/day maintenance dose
  • Nortriptyline typically about 50-200 mg/day maintenance dose
  • Paroxetine from about 20 to about 50 mg once/day; preferred, from about 20 to about 30 mg once/day;
  • Phenelzine typically about 15-60 mg/day maintenance dose
  • Reboxetine from about 1 to about 30 mg, once to four times/day; preferred, from about 5 to about 30 mg once/day;
  • Sertraline from about 20 to about 500 mg once/day; preferred, from about 50 to about 200 mg once/day;
  • Tranylcypromine typically about 30-60 mg/day maintenance dose
  • Trazodone typically about 75-300 mg/day maintenance dose
  • Venlafaxine from about 10 to about 150 mg once-thrice/day; preferred, from about 25 to about 125 mg thrice/day or about 30 to about 200 mg once a day, for example 37.5 mg, 75 mg, or 150 mg once a day;
  • compounds of formula I may be administered with antidepressant agents in a single pharmaceutical formulation, or in multiple formulations. Where multiple formulations are employed, each may include both the compound of formula I and the antidepressant agent, or alternatively, each may include only one.
  • An inventive combination of one or more compounds of formula I and one or more antidepressant agents may conveniently be presented as a pharmaceutical formulation in a unitary dosage form.
  • a convenient unitary dosage formulation contains the active ingredients in amounts from 0.1 mg to 1 g each, for example 1 mg to 500 mg.
  • Typical unit doses may, for example, contain about 0.5 to about 500 mg, or about 1 mg to about 500 mg, of a compound of formula I.
  • pharmaceutical formulations may be prepared as “patient packs” containing the whole course of treatment in a single package, for example a blister pack.
  • Patient packs have an advantage over traditional prescriptions, where a pharmacist divides a patient's supply of a pharmaceutical from a bulk supply, in that the patient always has access to the package insert contained in the patient pack, normally missing in traditional prescriptions.
  • the inclusion of a package insert has been shown to improve patient compliance with the physician's instructions.
  • a patient pack comprising at least one active ingredient of the combination of the invention and an information insert containing directions on the use of the combination of the invention.
  • the present invention provides a patient pack comprising both active ingredients of the combination of the invention for simultaneous or sequential administration to a patient, and further comprising an information insert containing directions on the use of the combination of the invention.
  • the present invention provides a patient pack comprising both active ingredients of the combination of the invention formulated into a single unit dosage form for administration to a patient, and further comprising an information insert containing directions on the use of the combination of the invention.
  • combinations of one or more compounds of formula I and one or more antidepressant agents may be formulated for any mode of delivery including, for example, oral, rectal, nasal, topical (including transdermal, buccal and sublingual), vaginal or parenteral (including subcutaneous, intramuscular, intravenous and intradermal) administration.
  • the formulations may be prepared by any methods well known in the art of pharmacy, for example, using methods such as those described in Gennaro et al., Remington's Pharmaceutical Sciences (18th ed., Mack Publishing Company, 1990, see especially Part 8: Pharmaceutical Preparations and their Manufacture).
  • Such methods typically include a step of bringing into association the active ingredient(s) with the carrier which constitutes one or more accessory ingredients.
  • accessory ingredients include, for example, fillers, binders, diluents, disintegrants, lubricants, colorants, flavouring agents and wetting agents.
  • Formulations suitable for oral administration may be presented, for example, as discrete units such as pills, tablets or capsules each containing a predetermined amount of active ingredient; as a powder or granules; as a solution or suspension.
  • the active ingredient(s) may also be present as a bolus or paste, or may be contained within liposomes.
  • tablets containing various excipients such as microcrystalline cellulose, sodium citrate, calcium carbonate, dicalcium phosphate and glycine may be employed along with various disintegrants such as starch (and preferably corn, potato or tapioca starch), alginic acid and certain complex silicates, together with granulation binders like polyvinylpyrrolidone, sucrose, gelatin and acacia.
  • disintegrants such as starch (and preferably corn, potato or tapioca starch), alginic acid and certain complex silicates, together with granulation binders like polyvinylpyrrolidone, sucrose, gelatin and acacia.
  • lubricating agents such as magnesium stearate, sodium lauryl sulfate and talc are often very useful for tabletting purposes.
  • Solid compositions of a similar type may also be employed as fillers in gelatin capsules; preferred materials in this connection also include lactose or milk sugar as well as high molecular weight polyethylene
  • Formulations suitable for oral administration may alternatively be presented, for example, as liquids.
  • the active ingredient(s) may be combined with various sweetening or flavoring agents, coloring matter or dyes, and, if so desired, emulsifying and/or suspending agents as well, together with such diluents as water, ethanol, propylene glycol, glycerin and various like combinations thereof.
  • Liquid formulations may be particularly useful for administration to children. In general, when preparing liquid formulations for administration to children, it is desirable to avoid or minimize use of alcohol in the formulation.
  • Formulations for rectal administration may be presented, for example, as a suppository or enema.
  • solutions of therapeutic agent(s) in either sesame or peanut oil or in aqueous propylene glycol may be employed.
  • Aqueous solutions may be suitably buffered if necessary, and the liquid diluent may be rendered isotonic.
  • Aqueous solutions are suitable for intravenous injection purposes.
  • Oily solutions are suitable for intra-articular, intramuscular and subcutaneous injection purposes. The preparation of all these solutions under sterile conditions is readily accomplished by standard pharmaceutical techniques well known to those skilled in the art.
  • Parenteral formulations may be presented in unit-dose or multi-dose containers, for example, sealed vials and ampoules, and may be stored in a freeze dried (lyophilized) condition requiring only the addition of the sterile liquid carrier, for example, water prior to use.
  • compositions for administration of inventive combinations by injection include those comprising the therapeutic agent(s) in association with a surface-active agent (or wetting agent or surfactant) or in the form of an emulsion (as a water-in-oil or oil-in-water emulsion).
  • Suitable surface-active agents include, in particular, non-ionic agents, such as polyoxyethylenesorbitans (e.g., TweenTM 20, 40, 60, 80 or 85) and other sorbitans (e.g., SpanTM 20, 40, 60, 80 or 85).
  • Compositions with a surface-active agent will conveniently comprise between 0.05 and 5% surface-active agent, and preferably between 0.1 and 2.5%. It will be appreciated that other ingredients may be added, for example mannitol or other pharmaceutically acceptable vehicles, if necessary.
  • Suitable emulsions may be prepared using commercially available fat emulsions, such as IntralipidTM, LiposynTM, InfonutrolTM, LipofundinTM and LipiphysanTM.
  • the therapeutic agent(s) may be either dissolved in a pre-mixed emulsion composition or alternatively may be dissolved in an oil (e.g., soybean oil, safflower oil, cottonseed oil, sesame oil, corn oil or almond oil) and an emulsion formed upon mixing with a phospholipid (e.g., eggs phospholipids, soybean phospholipids or soybean lecithin) and water.
  • an oil e.g., soybean oil, safflower oil, cottonseed oil, sesame oil, corn oil or almond oil
  • a phospholipid e.g., eggs phospholipids, soybean phospholipids or soybean lecithin
  • Suitable emulsions will typically contain up to 20% oil, for example, between 5 and 20%.
  • the fat emulsion will preferably comprise fat droplets between 0.1 and 1.0 .mu.m, particularly 0.1 and 0.5 .mu.m, and have a pH in the range of 5.5 to 8.0.
  • compositions for inhalation or insufflation include solutions and suspensions in pharmaceutically acceptable, aqueous or organic solvents or mixtures thereof, and powders.
  • the liquid or solid compositions may contain suitable pharmaceutically acceptable excipients as set out above.
  • the compositions are administered by the oral or nasal respiratory route for local or systemic effect.
  • Compositions in preferably sterile pharmaceutically acceptable solvents may be nebulised by use of inert gases. Nebulised solutions may be breathed directly from the nebulising device or the nebulising devise may be attached to a face mask, tent or intermittent positive pressure breathing machine.
  • Solution, suspension, or powder compositions may be administered, preferably orally or nasally, from devices which deliver the formulation in an appropriate manner.
  • compositions of the present invention may also be presented for administration in the form of transdermal patches using conventional technology.
  • the compositions may also be administered via the buccal cavity using, for example, absorption wafers.
  • inventive combinations are useful to treat, prevent, delay, or reduce the severity of depression or another mood disorder from which the individual suffers or to which the individual is susceptible, or from one or more symptoms of depression or other mood disorder.
  • combinations of one or more compounds of formula I and one or more antidepressive are useful in the treatment of disorders, for example, single episodic or recurrent major depressive disorders, dysthymic disorders, depressive neurosis, and neurotic depression; melancholic depression including anorexia, weight loss, insomnia and early morning waking, and psychomotor retardation; atypical depression (or reactive depression) including increased appetite, hypersomnia, psychomotor agitation or irritability, anxiety and phobias, seasonal affective disorder, or bipolar disorders or manic depression, for example, bipolar I disorder, bipolar II disorder and cyclothymic disorder.
  • inventive combinations are used to treat depression.
  • inventive combinations are used to treat bipolar disorder.
  • compounds of the present invention are useful for treating one or more depressive disorders such as major depressive disorder, seasonal affective disorder, dysthymic disorder, substance-induced mood disorder, depressive disorder not otherwise specified, and treatment resistant depression.
  • depressive disorders such as major depressive disorder, seasonal affective disorder, dysthymic disorder, substance-induced mood disorder, depressive disorder not otherwise specified, and treatment resistant depression.
  • Another aspect of the present invention provides a method for treating one or more mood episodes such as major depressive episode, manic episode, mixed episode, and hypomanic episode; and adjustment disorders such as adjustment disorders with anxiety and/or depressed mood.
  • mood episodes such as major depressive episode, manic episode, mixed episode, and hypomanic episode
  • adjustment disorders such as adjustment disorders with anxiety and/or depressed mood.
  • Combinations of the present invention are also useful for treating symptoms related to depressive disorders including somatic symptoms such as neuropathic pain and sexual dysfunction.
  • somatic symptoms include hopelessness, helplessness, anxiety and worries, memory complaints with or without objective signs of cognitive impairment, loss of feeling of pleasure (anhedonia), slowed movement, irritability, and lack of interest in personal care, such as poor adherence to medical or dietary regimens.
  • the present invention provides a method of treating sexual dysfunction related to depression. In other embodiments, the present invention provides a method of treating sexual dysfunction associated with administering a serotonin reuptake inhibitor (SRI) for treating a depressive or other disorder.
  • SRI serotonin reuptake inhibitor
  • Combinations of the present invention are useful for treating sexual dysfunction in the male (e.g. male erectile dysfunction—MED) and in the female—female sexual dysfunction (FSD), e.g. female sexual arousal disorder (FSAD).
  • MED male erectile dysfunction
  • FSD female sexual dysfunction
  • FSAD female sexual arousal disorder
  • the present invention provides a method for treating one or more disorders associated with sexual dysfunction including: HSDD, characterized by a deficiency, or absence of, sexual fantasies and desire for sexual activity; FSAD, characterized by a persistent or recurrent inability to attain, or to maintain until completion of the sexual activity, an adequate lubrication-swelling response of sexual excitement; FOD characterized by persistent or recurrent delay in, or absence of, orgasm following a normal sexual excitement phase; Sexual Pain Disorders such as dyspareunia and vaginismus; and/or HSDD characterized by a woman who has no or little desire to be sexual, and has no or few sexual thoughts or fantasies.
  • HSDD characterized by a deficiency, or absence of, sexual fantasies and desire for sexual activity
  • FSAD characterized by a persistent or recurrent inability to attain, or to maintain until completion of the sexual activity, an adequate lubrication-swelling response of sexual excitement
  • FOD characterized by persistent or recurrent delay in
  • compounds of the present invention provide a rapid onset of action as compared with other therapeutic agents typically used for treating depression and depressive disorders.
  • inventive combinations may be useful in the treatment of other mood disorders such as dysthymic disorder with early or late onset and with or without atypical features; dementia of the Alzheimer's type, with early or late onset, with depressed mood; vascular dementia with depressed mood, disorders induced by alcohol, amphetamines, cocaine, hallucinogens, inhalants, opioids, phencyclidine, sedatives, hypnotics, anxiolytics and other substances; schizoaffective disorder of the depressed type; and adjustment disorder with depressed mood.
  • mood disorders such as dysthymic disorder with early or late onset and with or without atypical features; dementia of the Alzheimer's type, with early or late onset, with depressed mood; vascular dementia with depressed mood, disorders induced by alcohol, amphetamines, cocaine, hallucinogens, inhalants, opioids, phencyclidine, sedatives, hypnotics, anxiolytics and other substances; schizoaffective disorder of the depressed
  • treatment refers to reversing, alleviating, delaying the onset of, inhibiting the progress of, or preventing depression or another mood disorder, or one or more symptoms thereof, as described herein.
  • treatment may be applied after one or more symptoms have developed.
  • treatment may be administered in the absence of symptoms.
  • treatment may be administered prior to symptoms (e.g., in light of a history of symptoms and/or one or more other susceptibility factors), or after symptoms have resolved, for example to prevent or delay their reoccurrence.
  • Individuals to be treated in accordance with the present invention include those suffering from depression or a mood disorder, and those susceptible to depression or a mood disorder.
  • a patient is considered to be suffering from depression or a mood disorder if that patient shows an appropriate collection of accepted symptoms.
  • a patient is considered to be susceptible to depression or a mood disorder or if, for example, that patient has a familial history of depression or of the mood disorder, or carries a known genetic susceptibility trait.
  • a patient may also be considered to be susceptible if the patient has shown one or more symptoms of depression, or of the mood disorder, or has experienced an episode of depression or of the mood disorder, in the past.
  • inventive combinations are useful for treatment-resistant depression.
  • inventive combinations when administered to treat depression or other mood disorders, show fewer undesirable side effects than are observed upon administration of the antidepressant alone in an amount that achieves comparabale relief of depression.
  • inventive combinations show more rapid onset of activity than do the antidepressants alone.
  • inventive combinations may also be used to treat one or more psychotic disorders, or symptoms thereof.
  • inventive combinations may be used in the treatment of psychotic disorders or episodes.
  • combinations of one or more compounds of formula I and one or more anti-psychotic agents may be used in the treatment of schizophrenia including paranoid type, disorganized type, catatonic type, and undifferentiated type, schizophreniform disorder, schizoaffective disorder, delusional disorder, substance-induced psychotic disorder, and psychotic disorder not otherwise specified; L-DOPA-induced psychosis; psychosis associated with Alzheimer's dementia; psychosis associated with Parkinson's disease; psychosis associated with Lewy body disease; bipolar disorders such as bipolar I disorder, bipolar II disorder, and cyclothymic disorder; dementia, and depression with psychotic features.
  • inventive combinations are useful in the treatment of bipolar disorder.
  • inventive combinations are used to treat schizophrenia.
  • inventive combinations are used to treat bipolar disorder.
  • Compound 1 (7-(2,6-dichlorophenyl)-5-fluoro-2,3-dihydrobenzofuran-2-yl)methanamine, was used to exemplify the effectiveness of compounds of the present invention in the tail suspension test.
  • the tail suspension test is an assay that can evaluate antidepressant-like effects of drugs.
  • Clinically effective drugs such as Prozac (fluoxetine) are effective in this assay. Specifically, they decrease the amount of time the mice spend immobile after being hung upside down by their tails during the test. It is impossible to determine if a mouse is indeed depressed. However, the fact that clinically effective antidepressants reduce immobility lends predictive validity to the model.
  • mice Male Swiss Webster mice (Charles River) weighing 20-35 g were used throughout this study. They were housed in groups of five per cage in an AALAC-accredited facility that was maintained on a 12-h light dark cycle (lights on at 0600 h) and had free access to food and water. Experimental groups consisted of 12 mice, randomly assigned to treatment groups. All experiments were performed between 9:00 AM and noon in accordance to the Guide for the Care and Use of Laboratory Animals as adopted and promulgated by the National Institutes of Health (Pub. 85-23, 1985).
  • mice were suspended upside down by the tail using adhesive laboratory tape (VWR International), to a flat metal bar connected to a strain gauge within a tail suspension chamber (Med Associates). The time spent immobile during a 6-minute test session was automatically recorded. 8 mice were simultaneously tested within separate chambers. Data collected were expressed as a mean of immobility time and statistical analysis was performed using a one-way ANOVA with least significant difference (LSD) post-hoc test.
  • VWR International adhesive laboratory tape
  • LSD least significant difference

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Abstract

Therapeutic combinations useful in the treatment or prevention of depression or other mood disorders, to pharmaceutical compositions containing said combinations, and to their use in the treatment or prophylaxis of depression or other mood disorders are provided. Such compounds are of formula I:
Figure US20080269321A1-20081030-C00001
or a pharmaceutically acceptable salt thereof, wherein each of R1, R2, R3, n, y, and Ar are as defined and described herein.

Description

    CROSS REFERENCE TO RELATED APPLICATIONS
  • This application claims priority to U.S. Provisional Patent Application Ser. No. 60/674,048, filed Apr. 22, 2005, the entirety of which is hereby incorporated herein by reference.
    • FIELD OF THE INVENTION
  • The present invention relates to therapeutic combinations of compounds useful for the treatment or prophylaxis of depression, to pharmaceutical compositions containing such combinations, and to their use in the treatment or prophylaxis of depression.
    • BACKGROUND OF THE INVENTION
  • Between 5-10% of adults worldwide suffer from depression. Even more experience depression-related mood disorders such as dysthymia, seasonal affective disorder, and postpartum depression, bipolar disorder, anxiety disorder, posttraumatic stress disorder, panic disorder, and obsessive-compulsive disorder.
  • The economic costs to society, and person costs to individuals and families, associated with depression are enormous. Within a 15-month period after having been diagnosed with depression, sufferers are four times more likely to die as those who do not have depression. Almost 60% of suicides have their roots in major depression, and 15% of those admitted to a psychiatric hospital for depression eventually kill themselves. See Nierenberg, Am J Manag Care 7(11 Suppl): S353-66, 2001. In the U.S. alone, the estimated economic costs for depression exceeded $44 billion in 1990. The World Health Organization estimates that major depression is the fourth most important cause worldwide of loss in disability-adjusted life years, and will be the second most important cause by 2020.
  • A variety of pharmacologic agents are available for the treatment of depression. Significant success has been achieved through the use of seratonin reuptake inhibitors (SRIs), norepinephrine reuptake inhibitors (NERIs), combined serotonin-norepinephrine reuptake inhibitors (SNRIs), monoamine oxidase inhibitors (MAOIs), phosphodiesterase-4 (PDE4) inhibitors or other compounds. However, even with these options available, many patients fail to respond, or respond only partially to treatment. Additionally, many of these agents show delayed onset of activity, so that patients are required to undergo treatment for weeks or months before receiving benefits. Most currently available antidepressants take 2-3 weeks or more to elicit a response.
  • Traditional therapies can also have significant side effects. For example, more than a third of patients taking SRIs experience sexual dysfunction. Other problematic side effects include gastrointestinal disturbances, often manifested as nausea and occasional vomiting, agitation, insomnia, weight gain, onset of diabetes, prolongation of the heart rate corrected interval (QTc), agranylocytosis, etc. Depressive patients who also suffer from psychotic disorders (e.g., schizophrenia) also sometimes suffer extrapyramidal side effects. These side effects often discourage patients from following their recommended therapeutic regimen.
  • There remains a need for the development of improved therapies for the treatment of depression and/or other mood disorders.
    • SUMMARY OF THE INVENTION
  • The present invention provides new combination therapies for the treatment of depression. In particular, the present invention provides combinations of a compound of formula I:
  • Figure US20080269321A1-20081030-C00002
    • or a pharmaceutically acceptable salt thereof, wherein:
    • n is one or two;
    • each of R2 and R3 is independently hydrogen, methyl, ethyl, 2-fluoroethyl, 2,2-difluoroethyl or cyclopropyl;
    • each R1 is independently hydrogen, halogen, OH, lower alkyl, lower alkoxy, lower haloalkyl, lower haloalkoxy, or CN;
    • Ar is thienyl, furyl, pyridyl, or phenyl, wherein Ar is optionally substituted with one or more Rx substituents;
    • each Rx is independently selected from halogen, OH, lower alkyl, lower alkoxy, lower haloalkyl, lower haloalkoxy, or CN; and
    • y is 0-3,
      with one or more anti-depressive agents for treating patients suffering from or susceptible to depression or related mood disorders. The present invention therefore provides, among other things, certain drug combinations, pharmaceutical compositions containing such combinations, and methods of treating patients suffering from or susceptible to depression or related mood disorders with such combinations or compositions.
    BRIEF DESCRIPTION OF THE DRAWING
  • FIG. 1 shows the effects of Compound 1, alone or in combination with paroxetine, in the tail suspension test.
    •  DETAILED DESCRIPTION OF CERTAIN EMBODIMENTS OF THE INVENTION
  • The present invention encompasses the finding that certain 5-HT2C receptor agonists can be usefully combined with one or more anti-depressive agents in the treatment or prevention of depression or other mood disorders. In particular, the present invention provides combinations of 5-HT2C receptor agonists, or partial agonists, of formula I:
  • Figure US20080269321A1-20081030-C00003
    • or a pharmaceutically acceptable salt thereof, wherein:
    • n is one or two;
    • each of R2 and R3 is independently hydrogen, methyl, ethyl, 2-fluoroethyl, 2,2-difluoroethyl or cyclopropyl;
    • each R1 is independently hydrogen, halogen, OH, lower alkyl, lower alkoxy, lower haloalkyl, lower haloalkoxy, or CN;
    • Ar is thienyl, furyl, pyridyl, or phenyl, wherein Ar is optionally substituted with one or more Rx substituents;
    • each Rx is independently selected from halogen, OH, lower alkyl, lower alkoxy, lower haloalkyl, lower haloalkoxy, or CN; and
    • y is 0-3,
      with one or more anti-depressant drugs for the treatment of depression or other mood disorders. In some embodiments, the inventive combinations allow treatment of refractory depression (i.e., depression that is not responsive to traditional therapies). Alternatively or additionally, the inventive combinations may be employed to treat depression with more rapid onset of benefit, and/or with fewer side effects.
    1. 5-HT2C Receptor Agonists of Formula I
  • The present invention utilizes 5-HT2C receptor agonists of formula I:
  • Figure US20080269321A1-20081030-C00004
    • wherein:
    • n is one or two;
    • each of R2 and R3 is independently hydrogen, methyl, ethyl, 2-fluoroethyl, 2,2-difluoroethyl or cyclopropyl;
    • each R1 is independently hydrogen, halogen, OH, lower alkyl, lower alkoxy, lower haloalkyl, lower haloalkoxy, or CN;
    • Ar is thienyl, furyl, pyridyl, or phenyl, wherein Ar is optionally substituted with one or more Rx substituents;
    • each Rx is independently selected from halogen, OH, lower alkyl, lower alkoxy, lower haloalkyl, lower haloalkoxy, or CN; and
    • y is 0-3,
      or pharmaceutically acceptable salts thereof, in combination with one or more anti-depressants.
  • The term “lower alkyl,” as used herein, refers to a hydrocarbon chain having up to 4 carbon atoms, preferably 1 to 3 carbon atoms, and more preferably 1 to 2 carbon atoms. The term “alkyl” includes, but is not limited to, straight and branched chains such as methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, sec-butyl, or t-butyl.
  • The term “alkoxy,” as used herein, refers to the group —OR, wherein R is a lower alkyl group.
  • The terms “halogen” or “halo,” as used herein, refer to chlorine, bromine, fluorine or iodine.
  • The term “haloalkyl,” as used herein, or as part of a moiety such as “haloalkoxy” refers to an alkyl group, as defined herein, that has one or more halogen substituents. In certain embodiment, every hydrogen atom on said alkyl group is replaced by a halogen atom. Such haloalkyl groups include —CF3. Such haloalkoxy groups include —OCF3.
  • The terms “effective amount” and “therapeutically effective amount,” as used herein, refer to the amount of a compound or combination that, when administered to an individual, is effective to treat, prevent, delay, or reduce the severity of depression or another mood disorder from which the individual suffers or to which the individual is susceptible, or from one or more symptoms of depression or other mood disorder. Those of ordinary skill in the art will appreciate that the amount of an individual active agent that is therapeutically effective in the context of an inventive combination may well differ from the amount of that agent that is therapeutically effective when the agent is delivered alone. In some embodiments of the invention, a lower amount is required to therapeutic effectiveness in the context of an inventive combination than is required to achieve therapeutic effectiveness alone. Those of ordinary skill will further appreciate that a different amount of a particular compound or combination may be required to achieve therapeutic effectiveness in the context of different formulations, modes of delivery and/or administration regimen.
  • The term “pharmaceutically acceptable salts” or “pharmaceutically acceptable salt” refers to salts derived from treating a compound of formula I with an organic or inorganic acid such as, for example, acetic, lactic, citric, cinnamic, tartaric, succinic, fumaric, maleic, malonic, mandelic, malic, oxalic, propionic, hydrochloric, hydrobromic, phosphoric, nitric, sulfuric, glycolic, pyruvic, methanesulfonic, ethanesulfonic, toluenesulfonic, salicylic, benzoic, or similarly known acceptable acids. In certain embodiments, the present invention provides the hydrochloride salt of a compound of formula I.
  • The term “patient,” as used herein, refers to a mammal. In certain embodiments, the term “patient” refers to a human.
  • The terms “administer,” “administering,” or “administration,” as used herein, refer to either directly administering a compound or composition to a patient, or administering a prodrug derivative or analog of the compound to the patient, which will form an equivalent amount of the active compound or substance within the patient's body.
  • The compounds of formula I, as defined above or in classes and subclasses as described herein, have affinity for and agonist or partial agonist activity at the 2C subtype of brain serotonin receptors.
  • As defined generally above, each of the R2 and R3 groups of formula I is independently hydrogen, methyl, ethyl, 2-fluoroethyl, 2,2-difluoroethyl or cyclopropyl. In certain embodiments, one of the R2 and R3 groups of formula I is hydrogen and the other R2 or R3 group of formula I is hydrogen, methyl, ethyl, 2-fluoroethyl, 2,2-difluoroethyl or cyclopropyl. In other embodiments, neither of the R2 and R3 groups of formula I is hydrogen. In still other embodiments, both of the R2 and R3 groups of formula I are hydrogen.
  • As defined generally above, each R1 group of formula I is independently hydrogen, halogen, OH, lower alkyl, lower alkoxy, lower haloalkyl, lower haloalkoxy, or CN. In certain embodiments, each R1 group of formula I is hydrogen. In other embodiments, at least one of R1 group of formula I is halogen. In still other embodiments, y is 1 and R1 is halogen.
  • According to another embodiment, y is 1 and R1 is at the 5-position of the dihydrobenzofuran ring of formula I, thus forming a compound of formula Ia:
  • Figure US20080269321A1-20081030-C00005
  • or a pharmaceutically acceptable salt thereof, wherein each of R1, R2, R3, Ar, and n are as defined above for compounds of formula I and in classes and subclasses as described above and herein.
  • According to yet another embodiment, y is 1 and R1 is at the 6-position of the dihydrobenzofuran ring of formula I, thus forming a compound of formula Ia′:
  • Figure US20080269321A1-20081030-C00006
  • or a pharmaceutically acceptable salt thereof, wherein each of R1, R2, R3, Ar, and n are as defined above for compounds of formula I and in classes and subclasses as described above and herein.
  • As defined generally above, the Ar group of formula I is thienyl, furyl, pyridyl, or phenyl, wherein Ar is optionally substituted with one or more substituents independently selected from halogen, OH, lower alkyl, lower alkoxy, haloalkyl, haloalkoxy, or CN. In certain embodiments, the Ar group of formula I is unsubstituted phenyl. In other embodiments, the Ar group of formula I is phenyl with at least one substituent in the ortho position. In other embodiments, the Ar group of formula I is phenyl with at least one substituent in the ortho position selected from halogen, lower alkyl, lower alkoxy, or trifluoromethyl. According to another aspect the present invention provides a compound of formula I wherein Ar is phenyl di-substituted in the ortho and meta positions with independently selected halogen lower alkyl, or lower alkoxy. Yet another aspect of the present invention provides a compound of formula I wherein Ar is phenyl di-substituted in the ortho and para positions with independently selected halogen lower alkyl, or lower alkoxy. In other embodiment, the present invention provides a compound of formula I wherein Ar is phenyl di-substituted in the ortho positions with independently selected halogen lower alkyl, or lower alkoxy. Exemplary substituents on the phenyl moiety of the Ar group of formula I include OMe, fluoro, chloro, methyl, and trifluoromethyl.
  • In certain embodiments, the present invention provides combinations including a compound of formula Ia′ wherein Ar is phenyl with one substituent in the ortho position selected from halogen, lower alkyl, lower alkoxy, or trifluoromethyl.
  • According to one embodiment, Ar is phenyl substituted with one Rx substituent in the ortho-position, thus forming a compound of formula Ib, or with an Rx substituent in both ortho-positions, thus forming a compound of formula Ic:
  • Figure US20080269321A1-20081030-C00007
  • or a pharmaceutically acceptable salt thereof, wherein each R1, R2, R3, Rx, y and n are as defined above for compounds of formula I and in classes and subclasses as described above and herein.
  • In certain embodiments, the Ar group of formula I is selected from the following:
  • Figure US20080269321A1-20081030-C00008
    Figure US20080269321A1-20081030-C00009
  • According to yet another embodiment, the present invention provides combinations including a compound of formula Id or Ie:
  • Figure US20080269321A1-20081030-C00010
  • or a pharmaceutically acceptable salt thereof, wherein each R1, R2, Rx, y and n are as defined above for compounds of formula I and in classes and subclasses as described above and herein.
  • According to another embodiment, the present invention provides combinations including a compound of formula If or Ig:
  • Figure US20080269321A1-20081030-C00011
  • or a pharmaceutically acceptable salt thereof, wherein each R1, R2, R3, Rx, and n are as defined above for compounds of formula I and in classes and subclasses as described above and herein.
  • In certain embodiments, the present invention provides a compound of formula Ih or Ii:
  • Figure US20080269321A1-20081030-C00012
  • or a pharmaceutically acceptable salt thereof, wherein each R1, R2, R3, Rx, and n are as defined above for compounds of formula I and in classes and subclasses as described above and herein.
  • In certain embodiments, the present invention provides combinations including a compound of formula VIa or VIb:
  • Figure US20080269321A1-20081030-C00013
  • or a pharmaceutically acceptable salt thereof, wherein each R1, R2, R3, Rx, y and n are as defined above for compounds of formula I and in classes and subclasses as described above and herein.
  • According to another embodiment, the present invention provides a compound of formula VIc or VId:
  • Figure US20080269321A1-20081030-C00014
  • or a pharmaceutically acceptable salt thereof, wherein each R1, R2, R3, Rx, y and n are as defined above for compounds of formula I and in classes and subclasses as described above and herein.
  • Compounds of formula I for use in accordance with the present invention contain asymmetric carbon atoms and thus give rise to stereoisomers, including enantiomers and diastereomers. Accordingly, it is contemplated that the present invention relates to all of these stereoisomers, as well as to mixtures of the stereoisomers. Throughout this application, the name of a compound utilized in this invention, where the absolute configuration of an asymmetric center is not indicated, is intended to embrace the individual stereoisomers as well as mixtures of stereoisomers. In certain embodiments of the invention, compounds having an absolute (R) configuration are preferred.
  • Where a particular enantiomer is preferred, it may, in some embodiments be provided substantially free of the corresponding enantiomer. Thus, an enantiomer substantially free of the corresponding enantiomer refers to a compound which is isolated or separated via separation techniques or prepared free of the corresponding enantiomer. “Substantially free,” as used herein, means that the compound is made up of a significantly greater proportion of one enantiomer. In certain embodiments the compound is made up of at least about 90% by weight of a preferred enantiomer. In other embodiments of the invention, the compound is made up of at least about 99% by weight of a preferred enantiomer. Preferred enantiomers may be isolated from racemic mixtures by any method known to those skilled in the art, including chiral high pressure liquid chromatography (HPLC) and the formation and crystallization of chiral salts or prepared by methods described herein. See, for example, Jacques, et al., Enantiomers, Racemates and Resolutions (Wiley Interscience, New York, 1981); Wilen, et al., Tetrahedron 33:2725 (1977); Eliel, Stereochemistry of Carbon Compounds (McGraw-Hill, NY, 1962); Wilen, Tables of Resolving Agents and Optical Resolutions p. 268 (E. L. Eliel, Ed., Univ. of Notre Dame Press, Notre Dame, Ind. 1972).
  • It is further recognized that atropisomers of the present compounds may exist. The present invention thus encompasses atropisomeric forms of compounds of formula I as defined above, and in classes and subclasses described above and herein.
  • Also, it will be appreciated by those of ordinary skill in the art that reference to a compound herein is intended to include reference to any and all related forms such as polymorphs, hydrates, etc. Also, compounds may be provided as pro-drugs or other forms converted into the active agent during manufacture, processing, formulation, delivery, or in the body.
  • It will additionally be appreciated that the principles of the present invention apply all radiolabelled forms of the compounds receited herein, including, for example, those where the radiolabels are selected from as 3H, 11C, 14C, 18F, 123I and 125I. Such radiolabelled compounds are useful as research and diagnostic tools in metabolism pharmacokinetics studies and in binding assays in both animals and humans.
  • Exemplary compounds for formula I useful for the practice of the present invention are set forth in Table 1, below.
  • TABLE 1
    Exemplary Compounds of Formula I
    (±)-1-{7-[3,5-bis(trifluoromethyl)phenyl]-2,3-dihydro-1-benzofuran-2-yl}methanamine,
    (±)-1-[7-(3-chloro-4-fluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (±)-1-[7-(3,5-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (±)-1-(7-phenyl-2,3-dihydro-1-benzofuran-2-yl)methanamine,
    (+)-(1-(7-phenyl-2,3-dihydro-1-benzofuran-2-yl)methanamine,
    (−)-1-(7-phenyl-2,3-dihydro-1-benzofuran-2-yl)methanamine,
    (±)-1-[7-(3-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (+)-1-[7-(3-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (−)-1-[7-(3-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (±)-1-(7-thien-3-yl-2,3-dihydro-1-benzofuran-2-yl)methanamine,
    (+)-1-(7-thien-3-yl-2,3-dihydro-1-benzofuran-2-yl)methanamine,
    (−)-1-(7-thien-3-yl-2,3-dihydro-1-benzofuran-2-yl)methanamine,
    (±)-1-[7-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (+)-1-[7-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (−)-1-[7-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (±)-1-[7-(2-fluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (+)-1-[7-(2-fluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (−)-1-[7-(2-fluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (±)-1-{7-[2-(trifluoromethyl)phenyl]-2,3-dihydro-1-benzofuran-2-yl}methanamine,
    (−)-1-{7-[2-(trifluoromethyl)phenyl]-2,3-dihydro-1-benzofuran-2-yl}methanamine,
    (+)-1-{7-[2-(trifluoromethyl)phenyl]-2,3-dihydro-1-benzofuran-2-yl}methanamine,
    (±)-1-[7-(2,6-dimethylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (−)-1-[7-(2,6-dimethylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (+)-1-[7-(2,6-dimethylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (±)-1-[7-(2-methoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (±)-1-[7-(2-chlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (±)-1-[7-(3-fluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (±)-1-[7-(3-chlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (+)-1-[7-(3-chlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (−)-1-[7-(3-chlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (±)-1-[7-(3-methoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (±)-1-{7-[3-(trifluoromethyl)phenyl]-2,3-dihydro-1-benzofuran-2-yl}methanamine,
    (±)-1-[7-(4-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (+)-1-[7-(4-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (−)-1-[7-(4-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (±)-1-[7-(4-fluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (+)-1-[7-(4-fluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (−)-1-[7-(4-fluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (±)-1-[7-(4-chlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (+)-1-[7-(4-chlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (−)-1-[7-(4-chlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (±)-1-[7-(4-methoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (+)-1-[7-(4-methoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (−)-1-[7-(4-methoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (±)-1-{7-[4-(trifluoromethyl)phenyl]-2,3-dihydro-1-benzofuran-2-yl}methanamine,
    (±)-1-[7-(2,4-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (±)-1-(5-chloro-7-phenyl-2,3-dihydro-1-benzofuran-2-yl)methanamine,
    (+)-1-(5-chloro-7-phenyl-2,3-dihydro-1-benzofuran-2-yl)methanamine,
    (−)-1-(5-chloro-7-phenyl-2,3-dihydro-1-benzofuran-2-yl)methanamine,
    (±)-1-[5-chloro-7-(2-chlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (±)-1-[5-chloro-7-(3-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (±)-1-[5-chloro-7-(3-chlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (±)-(5-chloro-7-thien-3-yl-2,3-dihydro-1-benzofuran-2-yl)methylamine,
    (−)-(5-chloro-7-thien-3-yl-2,3-dihydro-1-benzofuran-2-yl)methylamine,
    (+)-(5-chloro-7-thien-3-yl-2,3-dihydro-1-benzofuran-2-yl)methylamine,
    (+)-N-[(5-chloro-7-thien-3-yl-2,3-dihydro-1-benzofuran-2-yl)methyl]-N-methylamine,
    (−)-N-[(5-chloro-7-thien-3-yl-2,3-dihydro-1-benzofuran-2-yl)methyl]-N-methylamine,
    (±)-1-[5-chloro-7-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (+)-1-[5-chloro-7-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (−)-1-[5-chloro-7-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (±)-1-(4-fluoro-7-phenyl-2,3-dihydro-1-benzofuran-2-yl)methanamine,
    (±)-1-[4-fluoro-7-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (±)-1-[7-(2-chlorophenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (+)-1-[7-(2-chlorophenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (−)-1-[7-(2-chlorophenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (±)-1-(5-fluoro-7-phenyl-2,3-dihydro-1-benzofuran-2-yl)methanamine,
    (±)-1-[5-fluoro-7-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (+)-1-[5-fluoro-7-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (−)-1-[5-fluoro-7-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (±)-1-[5-fluoro-7-(2-fluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (±)-1-{5-fluoro-7-[2-(trifluoromethyl)phenyl]-2,3-dihydro-1-benzofuran-2-yl}methanamine,
    (±)-(4,5-difluoro-7-phenyl-2,3-dihydro-1-benzofuran-2-yl)methylamine,
    (±)-1-[4,5-difluoro-7-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (±)-1-(5-chloro-2-methyl-7-phenyl-2,3-dihydro-1-benzofuran-2-yl)methanamine,
    (±)-(5-chloro-2-methyl-7-thien-3-yl-2,3-dihydro-1-benzofuran-2-yl)methylamine,
    (±)-(5-chloro-2-methyl-7-thien-2-yl-2,3-dihydro-1-benzofuran-2-yl)methylamine,
    (+)-1-[7-(2-methoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (−)-1-[7-(2-chlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (+)-1-[7-(2-chlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (+)-1-[7-(3-fluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (−)-1-[7-(3-fluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (+)-1-[7-(3-methoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (−)-1-[7-(3-methoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (−)-1-{7-[3-(trifluoromethyl)phenyl]-2,3-dihydro-1-benzofuran-2-yl}methanamine,
    (+)-1-{7-[3-(trifluoromethyl)phenyl]-2,3-dihydro-1-benzofuran-2-yl}methanamine,
    (+)-1-{7-[4-(trifluoromethyl)phenyl]-2,3-dihydro-1-benzofuran-2-yl}methanamine,
    (−)-1-{7-[4-(trifluoromethyl)phenyl]-2,3-dihydro-1-benzofuran-2-yl}methanamine,
    (±)-1-[7-(2,6-difluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (±)-1-[7-(2,6-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (−)-1-[7-(2,6-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (+)-1-[7-(2,6-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (±)-1-[7-(2,4-dimethoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (−)-1-[7-(2,4-dimethoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (+)-1-[7-(2,4-dimethoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (±)-1-[7-(2,4-difluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (+)-1-[7-(2,4-difluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (−)-1-[7-(2,4-difluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (−)-1-[7-(2,4-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (+)-1-[7-(2,4-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (−)-1-{5-fluoro-7-[2-(trifluoromethyl)phenyl]-2,3-dihydro-1-benzofuran-2-yl}methanamine,
    (+)-1-{5-fluoro-7-[2-(trifluoromethyl)phenyl]-2,3-dihydro-1-benzofuran-2-yl}methanamine,
    (±)-1-[7-(2,3-dimethylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (±)-{[7-(2,3-dimethoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (−)-{[(7-(2,3-dimethoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (+)-{[(7-(2,3-dimethoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (+)-{[7-(4-chloro-2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (−)-{[7-(4-chloro-2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[7-(2,3-difluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[7-(2,5-dimethylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[7-(2,5-dimethoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[7-(2,5-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (+)-{[7-(2,5-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (−)-{[7-(2,5-dichlorophenyl)-2,3-dihydro-1-benzofuran--yl]methyl}amine,
    (±)-{[7-(2,4,6-trichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[7-(4-chloro-2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[7-(5-chloro-2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[7-(5-chloro-2-methoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-[(7-pyridin-3-yl-2,3-dihydro-1-benzofuran-2-yl)methyl]amine,
    (+)-{[7-pyridin-3-yl-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (−)-{[7-pyridin-3-yl-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[5-fluoro-7-(2-methoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[5-fluoro-7-(3-fluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[5-fluoro-7-(3-methoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[5-fluoro-7-(3-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[5-fluoro-7-(4-fluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[5-fluoro-7-(4-chlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[5-fluoro-7-(4-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[5-fluoro-7-(4-methoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-[(5-fluoro-7-thien-3-yl-2,3-dihydro-1-benzofuran-2-yl)methyl]amine,
    (±)-{[5-fluoro-7-(3-furyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-[(5-fluoro-7-pyridin-2-yl-2,3-dihydro-1-benzofuran-2-yl)methyl]amine,
    (±)-[(5-fluoro-7-pyridin-3-yl-2,3-dihydro-1-benzofuran-2-yl)methyl]amine,
    (−)-[(5-fluoro-7-pyridin-3-yl-2,3-dihydro-1-benzofuran-2-yl)methyl]amine,
    (+)-{[5-fluoro-7-pyridin-3-yl-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-[(5-fluoro-7-pyridin-4-yl-2,3-dihydro-1-benzofuran-2-yl)methyl]amine,
    (±)-[(5-fluoro-7-pyrimidin-5-yl-2,3-dihydro-1-benzofuran-2-yl)methyl]amine,
    (±)-{[7-(2,3-dichlorophenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[7-(2,3-dimethoxyphenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (−)-{[7-(2,3-dimethoxyphenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (+)-{[7-(2,3-dimethoxyphenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[7-(2,4-difluorophenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[7-(2,4-dichlorophenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (−)-{[5-fluoro-7-(2,4-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (+)-{[5-fluoro-7-(2,4-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[7-(2,4-dimethoxyphenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[7-(2,5-difluorophenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[7-(2,5-dichlorophenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[7-(2,5-dimethylphenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[7-(2,5-dimethoxyphenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[5-fluoro-7-(5-methoxy-2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[5-fluoro-7-(2-methoxy-5-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[7-(2,6-difluorophenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[7-(2,6-dimethylphenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (+)-{[7-(2,6-dimethylphenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (−)-{[7-(2,6-dimethylphenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[7-(2,6-dichlorophenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-N-{[7-(2,6-dichlorophenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-
    yl]methyl}cyclopropanamine,
    (±)-1-cyclopropyl-N-{[7-(2,6-dichlorophenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-
    yl]methyl}methanamine,
    (±)-N-{[7-(2,6-dichlorophenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}ethanamine,
    (±)-{[7-(2,6-dichlorophenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}dimethylamine,
    (±)-{[5-chloro-7-(2-fluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[5-chloro-7-(2-methoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[5-chloro-7-(3-furyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[5-chloro-7-(2,3-difluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (−)-{[5-chloro-7-(2,3-difluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (+)-{[5-chloro-7-(2,3-difluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[5-chloro-7-(2,3-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[5-chloro-7-(2,3-dimethylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[5-chloro-7-(2,3-dimethoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[5-chloro-7-(2,4-difluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[5-chloro-7-(2,4-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (−)-{[5-chloro-7-(2,4-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (+)-{[5-chloro-7-(2,4-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[5-chloro-7-(2,4-dimethoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[5-chloro-7-(2,5-difluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[5-chloro-7-(2,5-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[5-chloro-7-(5-chloro-2-methoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[5-chloro-7-(3,4-difluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[5-chloro-7-(3-chloro-4-fluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[5-chloro-7-(2,6-dimethylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (−)-{[5-chloro-7-(2,6-dimethylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (+)-{[5-chloro-7-(2,6-dimethylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[5-chloro-7-(2,6-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (+)-{[5-chloro-7-(2,6-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (−)-{[5-chloro-7-(2,6-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[(5-chloro-7-pyridin-3-yl-2,3-dihydro-1-benzofuran-2-yl)methyl]amine,
    (±)-N-{[5-chloro-7-(2,6-dimethylphenyl)-2,3-dihydro-1-benzofuran-2-
    yl]methyl}cyclopropanamine,
    (±)-N-{[5-chloro-7-(2,6-dimethylphenyl)-2,3-dihydro-1-benzofuran-2-
    yl]methyl}(cyclopropylmethyl)amine,
    (±)-N-{[5-chloro-7-(2,6-dimethylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}ethanamine,
    (±)-{[(5-methyl-7-phenyl-2,3-dihydro-1-benzofuran-2-yl)methyl]amine,
    (±)-{[7-(2-methylphenyl)-5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[7-(2-fluorophenyl)-5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[7-(2-methoxyphenyl)-5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[7-(2-chlorophenyl)-5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-({5-methyl-7-[2-(trifluoromethyl)phenyl]-2,3-dihydro-1-benzofuran-2-yl}methyl)amine,
    (±)-{[7-(3-chlorophenyl)-5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[7-(3-methylphenyl)-5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[7-(4-methylphenyl)-5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[7-(4-fluorophenyl)-5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[7-(4-chlorophenyl)-5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[7-(4-methoxyphenyl)-5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[7-(2,3-dimethoxyphenyl)-5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (−)-{[7-(2,3-dimethoxyphenyl)-5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (+)-{[7-(2,3-dimethoxyphenyl)-5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[7-(2,4-dichlorophenyl)-5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (−)-{[7-(2,4-dichlorophenyl)-5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (+)-{[7-(2,4-dichlorophenyl)-5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[7-(2,5-dichlorophenyl)-5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[7-(2,6-dimethylphenyl)-5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[7-(2,6-dichlorophenyl)-5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (−)-{[7-(2,6-dichlorophenyl)-5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (+)-{[7-(2,6-dichlorophenyl)-5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[5-ethyl-7-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[5-ethyl-7-(2-chlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[5-(trifluoromethyl)-7-(2-fluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[5-(trifluoromethyl)-7-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[5-(trifluoromethyl)-7-(2-chlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[5-(trifluoromethyl)-7-(2-methoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[5-(trifluoromethyl)-7-(2-(trifluoromethyl)phenyl)-2,3-dihydro-1-benzofuran-2-
    yl]methyl}amine,
    (±)-{[5-(trifluoromethyl)-7-(3-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[5-(trifluoromethyl)-7-(3-fluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[5-(trifluoromethyl)-7-(3-chlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[5-(trifluoromethyl)-7-(3-methoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[5-(trifluoromethyl)-7-(3-(trifluoromethyl)phenyl)-2,3-dihydro-1-benzofuran-2-
    yl]methyl}amine,
    (±)-{[5-(trifluoromethyl)-7-(4-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[5-(trifluoromethyl)-7-(4-fluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[5-(trifluoromethyl)-7-(4-chlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[5-(trifluoromethyl)-7-(4-methoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[5-(trifluoromethyl)-7-(4-(trifluoromethyl)phenyl)-2,3-dihydro-1-benzofuran-2-
    yl]methyl}amine,
    (±)-{[7-(2,3-dimethylphenyl)-5-(trifluoromethyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[7-(2,3-difluorophenyl)-5-(trifluoromethyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[7-(2,3-dichlorophenyl)-5-(trifluoromethyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[7-(2,3-dimethoxyphenyl)-5-(trifluoromethyl)-2,3-dihydro-1-benzofuran-2-
    yl]methyl}amine,
    (±)-{[7-(2,4-difluorophenyl)-5-(trifluoromethyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[7-(2,4-dimethoxyphenyl)-5-(trifluoromethyl)-2,3-dihydro-1-benzofuran-2-
    yl]methyl}amine,
    (±)-{[7-(3,4-difluorophenyl)-5-(trifluoromethyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[7-(3-chloro-4-fluorophenyl)-5-(trifluoromethyl)-2,3-dihydro-1-benzofuran-2-
    yl]methyl}amine,
    (±)-{[7-(2,5-difluorophenyl)-5-(trifluoromethyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[7-(2,5-dichlorophenyl)-5-(trifluoromethyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[7-(2,6-dimethylphenyl)-5-(trifluoromethyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-4-[2-(aminomethyl)-5-(trifluoromethyl)-2,3-dihydro-1-benzofuran-7-yl]benzonitrile
    (±)-{[7-(3-furyl)-5-(trifluoromethyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[7-thien-3-yl-5-(trifluoromethyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[7-pyridin-3-yl-5-(trifluoromethyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[7-(2-fluorophenyl)-5-methoxy-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[7-(2-chlorophenyl)-5-methoxy-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[7-(2-methylphenyl)-5-methoxy-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[7-(2-methoxyphenyl)-5-methoxy-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[5-methoxy-7-(3-thienyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[7-(2,3-difluorophenyl)-5-methoxy-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[7-(2,3-dichlorophenyl)-5-methoxy-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[7-(2,3-dimethylphenyl)-5-methoxy-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[7-(2,4-difluorophenyl)-5-methoxy-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[7-(2,4-dichlorophenyl)-5-methoxy-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[7-(2,5-difluorophenyl)-5-methoxy-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[7-(2,5-dichlorophenyl)-5-methoxy-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (+)-{[7-(2,5-dichlorophenyl)-5-methoxy-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (−)-{[7-(2,5-dichlorophenyl)-5-methoxy-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[7-(2,5-dimethylphenyl)-5-methoxy-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[7-(2,5-dimethoxylphenyl)-5-methoxy-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[7-(5-chloro-2-methoxyphenyl)-5-methoxy-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[7-(3-chloro-4-fluorophenyl)-5-methoxy-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[7-(2,6-dimethylphenyl)-5-methoxy-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-[(N-methyl-1-[7-(2-methoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (±)-[(N-methyl-1-[7-(3-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (±)-[(N-methyl-1-[7-(3-fluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (±)-[(N-methyl-1-[7-(3-chlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (±)-[(N-methyl-1-[7-(3-methoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (±)-[(N-methyl-1-[7-(4-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (±)-[(N-methyl-1-[7-(4-fluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (±)-[(N-methyl-1-[7-(4-chlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (±)-[(N-methyl-1-[7-(4-methoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (±)-[(N-methyl-1-[7-(2,3-dimethylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (±)-[(N-methyl-1-[7-(2,3-dimethoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (±)-[(N-methyl-1-[7-(2,4-difluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (±)-[(N-methyl-1-[7-(2,4-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (±)-[(N-methyl-1-[7-(2,4-dimethoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (±)-[(N-methyl-1-[7-(2,5-dimethylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (±)-[(N-methyl-1-[7-(2,5-difluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (±)-[(N-methyl-1-[7-(2,5-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (±)-[(N-methyl-1-[7-(5-chloro-2-methoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (±)-[(N-methyl-1-[7-(5-chloro-2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (±)-[(N-methyl-1-[7-(2,6-dimethylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (±)-[(N-methyl-1-[7-(2,6-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (−)-{[7-(2,6-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
    (+)-{[7-(2,6-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
    (±)-N-methyl-1-(7-pyridin-3-yl-2,3-dihydro-1-benzofuran-2-yl)methanamine,
    (±)-[(N-methyl-1-[7-(2,3-difluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (±)-{[5-fluoro-7-(2-fluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
    (±)-{[5-fluoro-7-(2-chlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
    (±)-{[5-fluoro-7-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
    (−)-{[5-fluoro-7-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
    (+)-{[5-fluoro-7-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
    (±)-{[5-fluoro-7-(2-methoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
    (±)-{[7-(2,3-dimethoxyphenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
    (±)-[7-(2,4-dichlorophenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
    (−)-[7-(2,4-dichlorophenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
    (+)-[7-(2,4-dichlorophenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
    (±)-{[7-(2,5-difluorophenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
    (±)-{[7-(2,5-dichlorophenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
    (+)-{[5-fluoro-7-(2,5-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
    (−)-{[5-fluoro-7-(2,5-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
    (±)-{[7-(2,5-dimethylphenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
    (±)-{[7-(2,6-dimethylphenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
    (±)-{[7-(2,6-dichlorophenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
    (±)-{[5-fluoro-7-(5-methoxy-2-methylphenyl)-2,3-dihydro-1-benzofuran-2-
    yl]methyl}methylamine,
    (±)-{[5-fluoro-7-(2-methoxy-5-methylphenyl)-2,3-dihydro-1-benzofuran-2-
    yl]methyl}methylamine,
    (±)-{[7-(5-chloro-2-methoxyphenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-
    yl]methyl}methylamine,
    (±)-[(5-fluoro-7-pyridin-3-yl-2,3-dihydro-1-benzofuran-2-yl)methyl]methylamine,
    (±)-[(5-chloro-7-(2-methoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
    (±)-{[5-chloro-7-(2,6-dimethylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
    (±)-[(5-chloro-7-(2-fluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
    (±)-{[5-chloro-7-(2,3-difluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
    (±)-{[5-chloro-7-(2,3-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
    (±)-{[5-chloro-7-(2,3-dimethylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
    (±)-{[5-chloro-7-(2,3-dimethoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
    (±)-{[5-chloro-7-(2,4-difluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
    (±)-{[5-chloro-7-(2,4-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
    (±)-{[5-chloro-7-(2,4-dimethoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
    (±)-{[5-chloro-7-(2,5-difluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
    (±)-{[5-chloro-7-(2,5-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
    (±)-{[5-chloro-7-(5-chloro-2-methoxyphenyl)-2,3-dihydro-1-benzofuran-2-
    yl]methyl}methylamine,
    (±)-{[5-chloro-7-(3,4-difluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
    (±)-[5-chloro-7-(3-chloro-4-fluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
    (±)-{[7-(2-fluorophenyl)-5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
    (±)-{[7-(2-chlorophenyl)-5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
    (±)-{[7-(2-methoxyphenyl)-5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
    (±)-{[7-(3-methylphenyl)-5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
    (±)-{[7-(3-chlorophenyl)-5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
    (±)-{[7-(4-methylphenyl)-5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
    (±)-{[7-(4-chlorophenyl)-5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
    (±)-{[7-(4-fluorophenyl)-5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
    (±)-{[7-(4-methoxyphenyl)-5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
    (±)-{[7-(2,3-dimethoxyphenyl)-5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
    (±)-{[7-(2,4-dichlorophenyl)-5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
    (±)-{[7-(2,5-dichlorophenyl)-5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
    (+)-{[7-(2,5-dichlorophenyl)-5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
    (−)-{[7-(2,5-dichlorophenyl)-5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
    (±)-{[7-(2,6-dimethylphenyl)-5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
    (±)-{[7-(2,6-dichlorophenyl)-5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
    (±)-{[7-(2-fluorophenyl)-5-methoxy-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
    (±)-{[7-(2-chlorophenyl)-5-methoxy-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
    (±)-{[7-(2-methylphenyl)-5-methoxy-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
    (±)-{[7-(2,3-difluorophenyl)-5-methoxy-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
    (±)-{[7-(2,3-dichlorophenyl)-5-methoxy-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
    (±)-{[7-(2,3-dimethylphenyl)-5-methoxy-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
    (±)-{[7-(2,4-difluorophenyl)-5-methoxy-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
    (±)-{[7-(2,5-difluorophenyl)-5-methoxy-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
    (±)-{[7-(2,5-dichlorophenyl)-5-methoxy-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
    (±)-{[7-(2,5-dimethylphenyl)-5-methoxy-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
    (±)-{[7-(2,5-dimethoxyphenyl)-5-methoxy-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
    (±)-{[7-(5-chloro-2-methoxyphenyl)-5-methoxy-2,3-dihydro-1-benzofuran-2-
    yl]methyl}methylamine,
    (±)-{[7-(2,6-dimethylphenyl)-5-methoxy-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
    (±)-N-methyl-1-[7-(2,3-difluorophenyl)-5-(trifluoromethyl)-2,3-dihydro-1-benzofuran-2-
    yl]methanamine,
    (±)-N-methyl-1-[7-(3,4-difluorophenyl)-5-(trifluoromethyl)-2,3-dihydro-1-benzofuran-2-
    yl]methanamine,
    (±)-N-methyl-1-[7-(2,5-difluorophenyl)-5-(trifluoromethyl)-2,3-dihydro-1-benzofuran-2-
    yl]methanamine,
    (±)-N-methyl-1-[7-(2,3-dichlorophenyl)-5-(trifluoromethyl)-2,3-dihydro-1-benzofuran-2-
    yl]methanamine,
    (±)-{[7-(3-chloro-4-fluorophenyl)-5-(trifluoromethyl)-2,3-dihydro-1-benzofuran-2-
    yl]methyl}methylamine,
    (±)-N-methyl-1-[7-(2,4-dimethoxyphenyl)-5-(trifluoromethyl)-2,3-dihydro-1-benzofuran-2-
    yl]methanamine,
    (+){[7-(2,6-dichlorophenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
    (−){[7-(2,6-dichlorophenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
    (R)-[7-(2-chloro-phenyl)-(5-Fluoro-2,3-dihydro-benzofuran-2-ylmethyl)methyl-amine,
    (R)-[7-(2,6-dichloro-phenyl)-5-Fluoro-2,3-dihydro-benzofuran-2-ylmethyl]ethylamine,
    (R)-[7-(2,6-dichloro-phenyl)-5-Fluoro-2,3-dihydro-benzofuran-2-ylmethyl]dimethylamine,
    {[(2R)-7-(5-chloro-2-methylphenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    {[(2R)-7-(4-chloro-2-methylphenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (−)-{[7-(2,6-dichlorophenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (+)-{[7-(2,6 dichlorophenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{2-[6-chloro-7-(2-chlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]ethyl}amine,
    (±)-{2-[7-(2,6-dichlorophenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]ethyl}amine,
    (±)-{2-[7-(2-methoxyphenyl)-5-methoxy-2,3-dihydro-1-benzofuran-2-yl]ethyl}amine,
    (±)-{N-methyl-1-[(7-(2,4,6-trichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (+)-{N-methyl-1-[(7-(2,4,6-trichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (−)-{N-methyl-1-[(7-(2,4,6-trichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (+)-{[7-(2,6-dimethylphenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
    (−)-{[7-(2,6-dimethylphenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
    (−)-{[7-(2,6-dimethylphenyl)-5-methoxy-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
    (+)-{[7-(2,6-dimethylphenyl)-5-methoxy-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
    (+)-{[5-chloro-7-(2,5-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
    (−)-{[5-chloro-7-(2,5-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
    (−)-{[5-chloro-7-(2,6-dimethylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
    (+)-{[5-chloro-7-(2,6-dimethylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
    (+)-{[7-(2,3-dimethoxyphenyl)-5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
    (−)-{[7-(2,3-dimethoxyphenyl)-5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
    (−)-{[7-(2,3-dimethoxyphenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine, or
    (+)-{[7-(2,3-dimethoxyphenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine;
    or a pharmaceutically acceptable salt thereof.
  • In certain embodiments, exemplary compounds of formula I are as set forth in Table 1-a, below.
  • TABLE 1-a
    Exemplary Compounds of formula I:
    (±)-1-(7-phenyl-2,3-dihydro-1-benzofuran-2-yl)methanamine,
    (+)-(1-(7-phenyl-2,3-dihydro-1-benzofuran-2-yl)methanamine,
    (−)-1-(7-phenyl-2,3-dihydro-1-benzofuran-2-yl)methanamine,
    (±)-1-[7-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (+)-1-[7-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (−)-1-[7-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (±)-1-[7-(2-fluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (+)-1-[7-(2-fluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (−)-1-[7-(2-fluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (±)-1-{7-[2-(trifluoromethyl)phenyl]-2,3-dihydro-1-benzofuran-2-yl}methanamine,
    (−)-1-{7-[2-(trifluoromethyl)phenyl]-2,3-dihydro-1-benzofuran-2-yl}methanamine,
    (+)-1-{7-[2-(trifluoromethyl)phenyl]-2,3-dihydro-1-benzofuran-2-yl}methanamine,
    (±)-1-[7-(2,6-dimethylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (−)-1-[7-(2,6-dimethylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (+)-1-[7-(2,6-dimethylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (±)-1-[7-(2-methoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (±)-1-[7-(2-chlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (±)-1-[7-(2,4-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (±)-1-[5-chloro-7-(2-chlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (±)-1-[5-chloro-7-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (+)-1-[5-chloro-7-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (−)-1-[5-chloro-7-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (±)-1-[4-fluoro-7-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (±)-1-[7-(2-chlorophenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (+)-1-[7-(2-chlorophenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (−)-1-[7-(2-chlorophenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (±)-1-[5-fluoro-7-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (+)-1-[5-fluoro-7-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (−)-1-[5-fluoro-7-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (±)-1-[5-fluoro-7-(2-fluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (±)-1-{5-fluoro-7-[2-(trifluoromethyl)phenyl]-2,3-dihydro-1-benzofuran-2-yl}methanamine,
    (±)-1-[4,5-difluoro-7-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (±)-1-(5-chloro-2-methyl-7-phenyl-2,3-dihydro-1-benzofuran-2-yl)methanamine,
    (+)-1-[7-(2-methoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (−)-1-[7-(2-chlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (+)-1-[7-(2-chlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (±)-1-[7-(2,6-difluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (±)-1-[7-(2,6-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (−)-1-[7-(2,6-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (+)-1-[7-(2,6-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (±)-1-[7-(2,4-dimethoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (−)-1-[7-(2,4-dimethoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (+)-1-[7-(2,4-dimethoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (±)-1-[7-(2,4-difluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (+)-1-[7-(2,4-difluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (−)-1-[7-(2,4-difluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (−)-1-[7-(2,4-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (+)-1-[7-(2,4-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (−)-1-{5-fluoro-7-[2-(trifluoromethyl)phenyl]-2,3-dihydro-1-benzofuran-2-yl}methanamine,
    (+)-1-{5-fluoro-7-[2-(trifluoromethyl)phenyl]-2,3-dihydro-1-benzofuran-2-yl}methanamine,
    (±)-1-[7-(2,3-dimethylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (±)-{[7-(2,3-dimethoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (−)-{[(7-(2,3-dimethoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (+)-{[(7-(2,3-dimethoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (+)-{[7-(4-chloro-2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (−)-{[7-(4-chloro-2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[7-(2,3-difluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[7-(2,5-dimethylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[7-(2,5-dimethoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[7-(2,5-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (+)-{[7-(2,5-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (−)-{[7-(2,5-dichlorophenyl)-2,3-dihydro-1-benzofuran--yl]methyl}amine,
    (±)-{[7-(2,4,6-trichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[7-(4-chloro-2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[7-(5-chloro-2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[7-(5-chloro-2-methoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[5-fluoro-7-(2-methoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[7-(2,3-dichlorophenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[7-(2,3-dimethoxyphenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (−)-{[7-(2,3-dimethoxyphenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (+)-{[7-(2,3-dimethoxyphenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[7-(2,4-difluorophenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[7-(2,4-dichlorophenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (−)-{[5-fluoro-7-(2,4-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (+)-{[5-fluoro-7-(2,4-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[7-(2,4-dimethoxyphenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[7-(2,5-difluorophenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[7-(2,5-dichlorophenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[7-(2,5-dimethylphenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[7-(2,5-dimethoxyphenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[5-fluoro-7-(5-methoxy-2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[5-fluoro-7-(2-methoxy-5-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[7-(2,6-difluorophenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[7-(2,6-dimethylphenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (+)-{[7-(2,6-dimethylphenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (−)-{[7-(2,6-dimethylphenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[7-(2,6-dichlorophenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-N-{[7-(2,6-dichlorophenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-
    yl]methyl}cyclopropanamine,
    (±)-1-cyclopropyl-N-{[7-(2,6-dichlorophenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-
    yl]methyl}methanamine,
    (±)-N-{[7-(2,6-dichlorophenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}ethanamine,
    (±)-{[7-(2,6-dichlorophenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}dimethylamine,
    (±)-{[5-chloro-7-(2-fluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[5-chloro-7-(2-methoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[5-chloro-7-(2,3-difluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (−)-{[5-chloro-7-(2,3-difluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (+)-{[5-chloro-7-(2,3-difluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[5-chloro-7-(2,3-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[5-chloro-7-(2,3-dimethylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[5-chloro-7-(2,3-dimethoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[5-chloro-7-(2,4-difluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[5-chloro-7-(2,4-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (−)-{[5-chloro-7-(2,4-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (+)-{[5-chloro-7-(2,4-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[5-chloro-7-(2,4-dimethoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[5-chloro-7-(2,5-difluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[5-chloro-7-(2,5-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[5-chloro-7-(5-chloro-2-methoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[5-chloro-7-(2,6-dimethylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (−)-{[5-chloro-7-(2,6-dimethylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (+)-{[5-chloro-7-(2,6-dimethylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[5-chloro-7-(2,6-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (+)-{[5-chloro-7-(2,6-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (−)-{[5-chloro-7-(2,6-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-N-{[5-chloro-7-(2,6-dimethylphenyl)-2,3-dihydro-1-benzofuran-2-
    yl]methyl}cyclopropanamine,
    (±)-N-{[5-chloro-7-(2,6-dimethylphenyl)-2,3-dihydro-1-benzofuran-2-
    yl]methyl}(cyclopropylmethyl)amine,
    (±)-N-{[5-chloro-7-(2,6-dimethylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}ethanamine,
    (±)-{[7-(2-methylphenyl)-5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[7-(2-fluorophenyl)-5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[7-(2-methoxyphenyl)-5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[7-(2-chlorophenyl)-5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-({5-methyl-7-[2-(trifluoromethyl)phenyl]-2,3-dihydro-1-benzofuran-2-yl}methyl)amine,
    (±)-{[7-(2,3-dimethoxyphenyl)-5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (−)-{[7-(2,3-dimethoxyphenyl)-5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (+)-{[7-(2,3-dimethoxyphenyl)-5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[7-(2,4-dichlorophenyl)-5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (−)-{[7-(2,4-dichlorophenyl)-5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (+)-{[7-(2,4-dichlorophenyl)-5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[7-(2,5-dichlorophenyl)-5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[7-(2,6-dimethylphenyl)-5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[7-(2,6-dichlorophenyl)-5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (−)-{[7-(2,6-dichlorophenyl)-5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (+)-{[7-(2,6-dichlorophenyl)-5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[5-ethyl-7-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[5-ethyl-7-(2-chlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[5-(trifluoromethyl)-7-(2-fluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[5-(trifluoromethyl)-7-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[5-(trifluoromethyl)-7-(2-chlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[5-(trifluoromethyl)-7-(2-methoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[5-(trifluoromethyl)-7-(2-(trifluoromethyl)phenyl)-2,3-dihydro-1-benzofuran-2-
    yl]methyl}amine,
    (±)-{[7-(2,3-dimethylphenyl)-5-(trifluoromethyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[7-(2,3-difluorophenyl)-5-(trifluoromethyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[7-(2,3-dichlorophenyl)-5-(trifluoromethyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[7-(2,3-dimethoxyphenyl)-5-(trifluoromethyl)-2,3-dihydro-1-benzofuran-2-
    yl]methyl}amine,
    (±)-{[7-(2,4-difluorophenyl)-5-(trifluoromethyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[7-(2,4-dimethoxyphenyl)-5-(trifluoromethyl)-2,3-dihydro-1-benzofuran-2-
    yl]methyl}amine,
    (±)-{[7-(2,5-difluorophenyl)-5-(trifluoromethyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[7-(2,5-dichlorophenyl)-5-(trifluoromethyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[7-(2,6-dimethylphenyl)-5-(trifluoromethyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[7-(2-fluorophenyl)-5-methoxy-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[7-(2-chlorophenyl)-5-methoxy-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[7-(2-methylphenyl)-5-methoxy-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[7-(2-methoxyphenyl)-5-methoxy-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[7-(2,3-difluorophenyl)-5-methoxy-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[7-(2,3-dichlorophenyl)-5-methoxy-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[7-(2,3-dimethylphenyl)-5-methoxy-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[7-(2,4-difluorophenyl)-5-methoxy-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[7-(2,4-dichlorophenyl)-5-methoxy-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[7-(2,5-difluorophenyl)-5-methoxy-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[7-(2,5-dichlorophenyl)-5-methoxy-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (+)-{[7-(2,5-dichlorophenyl)-5-methoxy-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (−)-{[7-(2,5-dichlorophenyl)-5-methoxy-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[7-(2,5-dimethylphenyl)-5-methoxy-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[7-(2,5-dimethoxylphenyl)-5-methoxy-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[7-(5-chloro-2-methoxyphenyl)-5-methoxy-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{[7-(2,6-dimethylphenyl)-5-methoxy-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-[(N-methyl-1-[7-(2-methoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (±)-[(N-methyl-1-[7-(2,3-dimethylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (±)-[(N-methyl-1-[7-(2,3-dimethoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (±)-[(N-methyl-1-[7-(2,4-difluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (±)-[(N-methyl-1-[7-(2,4-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (±)-[(N-methyl-1-[7-(2,4-dimethoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (±)-[(N-methyl-1-[7-(2,5-dimethylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (±)-[(N-methyl-1-[7-(2,5-difluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (±)-[(N-methyl-1-[7-(2,5-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (±)-[(N-methyl-1-[7-(2,6-dimethylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (±)-[(N-methyl-1-[7-(2,6-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (−)-{[7-(2,6-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
    (+)-{[7-(2,6-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
    (±)-[(N-methyl-1-[7-(2,3-difluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (±)-{[5-fluoro-7-(2-fluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
    (±)-{[5-fluoro-7-(2-chlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
    (±)-{[5-fluoro-7-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
    (−)-{[5-fluoro-7-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
    (+)-{[5-fluoro-7-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
    (±)-{[5-fluoro-7-(2-methoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
    (±)-{[7-(2,3-dimethoxyphenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
    (±)-[7-(2,4-dichlorophenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
    (−)-[7-(2,4-dichlorophenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
    (+)-[7-(2,4-dichlorophenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
    (±)-{[7-(2,5-difluorophenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
    (±)-{[7-(2,5-dichlorophenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
    (+)-{[5-fluoro-7-(2,5-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
    (−)-{[5-fluoro-7-(2,5-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
    (±)-{[7-(2,5-dimethylphenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
    (±)-{[7-(2,6-dimethylphenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
    (±)-{[7-(2,6-dichlorophenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
    (±)-{[5-fluoro-7-(5-methoxy-2-methylphenyl)-2,3-dihydro-1-benzofuran-2-
    yl]methyl}methylamine,
    (±)-{[5-fluoro-7-(2-methoxy-5-methylphenyl)-2,3-dihydro-1-benzofuran-2-
    yl]methyl}methylamine,
    (±)-{[7-(5-chloro-2-methoxyphenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-
    yl]methyl}methylamine,
    (±)-[(5-chloro-7-(2-methoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
    (±)-{[5-chloro-7-(2,6-dimethylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
    (±)-[(5-chloro-7-(2-fluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
    (±)-{[5-chloro-7-(2,3-difluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
    (±)-{[5-chloro-7-(2,3-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
    (±)-{[5-chloro-7-(2,3-dimethylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
    (±)-{[5-chloro-7-(2,3-dimethoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
    (±)-{[5-chloro-7-(2,4-difluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
    (±)-{[5-chloro-7-(2,4-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
    (±)-{[5-chloro-7-(2,4-dimethoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
    (±)-{[5-chloro-7-(2,5-difluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
    (±)-{[5-chloro-7-(2,5-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
    (±)-{[5-chloro-7-(5-chloro-2-methoxyphenyl)-2,3-dihydro-1-benzofuran-2-
    yl]methyl}methylamine,
    (±)-{[7-(2-fluorophenyl)-5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
    (±)-{[7-(2-chlorophenyl)-5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
    (±)-{[7-(2-methoxyphenyl)-5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
    (±)-{[7-(2,3-dimethoxyphenyl)-5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
    (±)-{[7-(2,4-dichlorophenyl)-5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
    (±)-{[7-(2,5-dichlorophenyl)-5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
    (+)-{[7-(2,5-dichlorophenyl)-5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
    (−)-{[7-(2,5-dichlorophenyl)-5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
    (±)-{[7-(2,6-dimethylphenyl)-5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
    (±)-{[7-(2,6-dichlorophenyl)-5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
    (±)-{[7-(2-fluorophenyl)-5-methoxy-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
    (±)-{[7-(2-chlorophenyl)-5-methoxy-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
    (±)-{[7-(2-methylphenyl)-5-methoxy-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
    (±)-{[7-(2,3-difluorophenyl)-5-methoxy-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
    (±)-{[7-(2,3-dichlorophenyl)-5-methoxy-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
    (±)-{[7-(2,3-dimethylphenyl)-5-methoxy-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
    (±)-{[7-(2,4-difluorophenyl)-5-methoxy-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
    (±)-{[7-(2,5-difluorophenyl)-5-methoxy-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
    (±)-{[7-(2,5-dichlorophenyl)-5-methoxy-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
    (±)-{[7-(2,5-dimethylphenyl)-5-methoxy-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
    (±)-{[7-(2,5-dimethoxyphenyl)-5-methoxy-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
    (±)-{[7-(5-chloro-2-methoxyphenyl)-5-methoxy-2,3-dihydro-1-benzofuran-2-
    yl]methyl}methylamine,
    (±)-{[7-(2,6-dimethylphenyl)-5-methoxy-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
    (±)-N-methyl-1-[7-(2,3-difluorophenyl)-5-(trifluoromethyl)-2,3-dihydro-1-benzofuran-2-
    yl]methanamine,
    (±)-N-methyl-1-[7-(2,3-dichlorophenyl)-5-(trifluoromethyl)-2,3-dihydro-1-benzofuran-2-
    yl]methanamine,
    (±)-N-methyl-1-[7-(2,4-dimethoxyphenyl)-5-(trifluoromethyl)-2,3-dihydro-1-benzofuran-2-
    yl]methanamine,
    (+){[7-(2,6-dichlorophenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
    (−){[7-(2,6-dichlorophenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
    (R)-[7-(2-chloro-phenyl)-(5-Fluoro-2,3-dihydro-benzofuran-2-ylmethyl)methyl-amine,
    (R)-[7-(2,6-dichloro-phenyl)-5-Fluoro-2,3-dihydro-benzofuran-2-ylmethyl]ethylamine,
    (R)-[7-(2,6-dichloro-phenyl)-5-Fluoro-2,3-dihydro-benzofuran-2-ylmethyl]dimethylamine,
    {[(2R)-7-(5-chloro-2-methylphenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    {[(2R)-7-(4-chloro-2-methylphenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (−)-{[7-(2,6-dichlorophenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (+)-{[7-(2,6 dichlorophenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
    (±)-{2-[6-chloro-7-(2-chlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]ethyl}amine,
    (±)-{2-[7-(2,6-dichlorophenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]ethyl}amine,
    (±)-{2-[7-(2-methoxyphenyl)-5-methoxy-2,3-dihydro-1-benzofuran-2-yl]ethyl}amine,
    (±)-{N-methyl-1-[(7-(2,4,6-trichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (+)-{N-methyl-1-[(7-(2,4,6-trichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (−)-{N-methyl-1-[(7-(2,4,6-trichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
    (+)-{[7-(2,6-dimethylphenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
    (−)-{[7-(2,6-dimethylphenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
    (−)-{[7-(2,6-dimethylphenyl)-5-methoxy-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
    (+)-{[7-(2,6-dimethylphenyl)-5-methoxy-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
    (+)-{[5-chloro-7-(2,5-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
    (−)-{[5-chloro-7-(2,5-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
    (−)-{[5-chloro-7-(2,6-dimethylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
    (+)-{[5-chloro-7-(2,6-dimethylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
    (+)-{[7-(2,3-dimethoxyphenyl)-5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
    (−)-{[7-(2,3-dimethoxyphenyl)-5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
    (−)-{[7-(2,3-dimethoxyphenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine, or
    (+)-{[7-(2,3-dimethoxyphenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine;
    or a pharmaceutically acceptable salt thereof.
  • Compounds of formula I for use in accordance with the present invention may be obtained or produced according to any available means including methods described in detail in U.S. patent application Ser. No. 10/970,714, filed Oct. 21, 2004, U.S. provisional patent application Ser. Nos. 60/621,023, filed Oct. 21, 2004, and 60/621,024, filed Oct. 21, 2004, and PCT publication number WP2005/044812, the entirety of each of which is hereby incorporated herein by reference.
    • 2. Antidepressant Agents
  • In certain embodiments, compounds of the present invention are administered in combination with one or more antidepressive agents. Suitable antidepressant agents include, for example, serotonin reuptake inhibitors (SRIs), norepinephrine reuptake inhibitors (NRIs), combined serotonin-norepinephrine reuptake inhibitors (SNRIs), monoamine oxidase inhibitors (MAOIs), reversible inhibitors of monoamine oxidase (RIMAs), phosphodiesterase-4 (PDE4) inhibitors, corticotropin releasing factor (CRF) antagonists, alpha.-adrenoreceptor antagonists or other compounds including atypical antidepressants. Additional antidepressants for administering in combination with compounds of the present invention include triple uptake inhibitors such as DOV 216303 and DOV 21947 . . . ; melatonin agonists such as agomelotine, super neurotransmitter uptake blockers (SNUBs; e.g., NS-2389 from GlaxoSmithKline and Neurosearch; (R)-DDMA from Sepracor), and/or substance P/neurokinin receptor antagonists (e.g., aprepitant/MK-869 from Merck; NKP-608 from Novartis; CPI-122721 from Pfizer; R673 from Roche; TAK637 from Takeda; and GW-97599 from GlaxoSmithKline).
  • Another class of antidepressant agents that may be used in the present invention are noradrenergic and specific serotonergic antidepressants (NaSSAs), such as mirtazepine (see, for example, U.S. Pat. No. 5,178,878, the entire contents of which are incorporated herein by reference).
  • Suitable NRIs that may be used in the present invention include tertiary amine tricyclics and secondary amine tricyclics. Suitable examples of tertiary amine tricyclics include: amitriptyline, clomipramine, doxepin, imipramine (See U.S. Pat. No. 2,554,736, incorporated herein by reference in its entirety) and trimipramine, and pharmaceutically acceptable salts thereof. Suitable examples of secondary amine tricyclics include: amoxapine, desipramine, maprotiline, nortriptyline and protriptyline, and pharmaceutically acceptable salts thereof.
  • Another NRI that may be used in the present invention is reboxetine (Edronax™; 2-[.alpha.-(2-ethoxy)phenoxy-benzyl]morpholine, usually administered as the racemate; See U.S. Pat. No. 4,229,449, incorporated herein by reference in its entirety).
  • Suitable SSRIs that may be used in the present invention include: citalopram (1-[3-(dimethylamino)propyl]-(4-fluorophenyl)-1,3-dihydro-o-5-isobenzofurancarbonitrile; See U.S. Pat. No. 4,136,193; Christensen et al., Eur. J. Pharmacol. 41:153, 1977; Dufour et al., Int. Clin. Psychopharmacol. 2:225, 1987; Timmerman et al., ibid., 239, each of which is incorporated herein by reference in its entirety); fluoxetine (N-methyl-3-(p-trifluoromethylphenoxy)-3-phenylpropylamine, marketed in the hydrochloride salt form and as the racemic mixture of its two isoforms; see, for example, U.S. Pat. No. 4,314,081; Robertson et al., J. Med. Chem. 31:1412, 1988, each of which is incorporated herein by reference); fluoxetine/olanzapine in combination; fluvoxamine (5-methoxy-1-[4-(trifluoromethyl)phenyl]-1-pentanone O-(2-aminoethyl)oxime; See U.S. Pat. No. 4,085,225; Claassen et al., Brit. J. Pharmacol. 60:505, 1977; De Wilde et al., J. Affective Disord. 4:249, 1982; Benfield et al., Drugs 32:313, 1986, each of which is incorporated herein by reference in its entirety); paroxetine (trans-(−)-3-[(1,3-benzodioxol-5-yloxy)methyl]-4-(4-fluorophenyl)piperidine; See U.S. Pat. No. 3,912,743; U.S. Pat. No. 4,007,196; Lassen, Eur. J. Pharmacol. 47:351, 1978; Hassan et al., Brit. J. Clin. Pharmacol. 19:705, 1985; Laursen et al., Acta Psychiat. Scand. 71:249, 1985; Battegay et al., Neuropsychobiology 13:31, 1985, each of which is incorporated herein by reference in its entirety); sertraline, (1S-cis)-4-(3,4-dichlorophenyl)-1,2,3,4-tetrahydro-N-methyl-1-naphthylamine hydrochloride; See U.S. Pat. No. 4,536,518, incorporated herein by reference in its entirety); escitalopram (see U.S. Pat. RE34,712); new 5HT1A agonists variza, alnespirone, gepirone, sunepitron, MKC242, vilazodone, eptapirone, and ORG12962 from Organon; and pharmaceutically acceptable salts thereof.
  • Suitable MAOIs that may be used in the present invention include: isocarboxazid, phenelzine, selegiline and tranylcypromine, and pharmaceutically acceptable salts thereof.
  • Suitable reversible MAOIs that may be used in the present invention include: moclobemide (4-chloro-N-[2-(4-morpholinyl)-ethyl]benzamide; See U.S. Pat. No. 4,210,754, incorporated herein by reference in its entirety), selegiline, and pharmaceutically acceptable salts thereof.
  • Suitable SNRIs that may be used in the present invention include venlafaxine (see U.S. Pat. No. 4,535,186, incorporated herein by reference in its entirety; see also U.S. Pat. Nos. 5,916,923, 6,274,171, 6,403,120, 6,419,958, 6,444,708, each of which is incorporated herein by reference in its entirety), and pharmaceutically acceptable salts and analogs, including the O-desmethylvenlafaxine succinate salt; milnacipran (N,N-diethyl-2-aminomethyl-1-phenylcyclopropanecarboxamide; see U.S. Pat. No. 4,478,836; Moret et al., Neuropharmacology 24:1211-19, 1985, each of which is incorporated herein by reference in its entirety); nefazodone (available from Bristol Myers Squibb and Dr. Reddy Labs Inc.); duloxetine; and pharmaceutically acceptable salts thereof.
  • Suitable CRF antagonists that may be used in the present invention include those compounds described in International Patent Specification Nos. WO 94/13643, WO 94/13644, WO 94/13661, WO 94/13676 and WO 94/13677.
  • Suitable atypical antidepressants that may be used in the present invention include: buproprion (Wellbutrin™; (.+−.)-1-(3-chlorophenyl)-2-[(1,1-dim-ethylethyl)amino]-1-propanone), lithium, nefazodone, trazodone and viloxazine, and pharmaceutically acceptable salts thereof. Another suitable atypical antidepressant is sibutramine.
  • Particular antidepressants that may be used in the present invention include, but are not limited to, adinazolam, alaproclate, alnespirone, amineptine, amitriptyline, amitriptyline/chlordiazepoxide combination, amoxapine, aprepitant, atipamezole, azamianserin, bazinaprine, befuraline, bifemelane, binodaline, bipenamol, brofaromine, buproprion, caroxazone, cericlamine, cianopramine, cimoxatone, citalopram, clemeprol, clomipramine, clovoxamine, dazepinil, deanol, demexiptiline, desipramine, O-desmethylvenlafaxine, dibenzepin, dothiepin, doxepin, droxidopa, duloxetine, elzasonan, enefexine, eptapirone, escitalopram, estazolam, etoperidone, femoxetine, fengabine, fezolamine, fluotracen, fluoxetine, fluvoxamine, gepirone, idazoxan, imipramine, indalpine, indeloxazine, iprindole, isocarboxazid, levoprotiline, litoxetine, lofepramine, maprotiline, medifoxamine, metapramine, metralindole, mianserin, milnacipran, minaprine, mirtazapine, moclobemide, montirelin, nebracetam, nefopam, nefozodine, nemititide, nialamide, nomifensine, norfluoxetine, nortriptyline, orotirelin, oxaflozane, paroxetine, pheneizine, pinazepam, pirlindone, pizotyline, protryptiline, reboxetine, ritanserin, robalzotan, rolipram, selegiline, sercloremine, sertraline, setiptiline, sibutramine, sulbutiamine, sulpiride, sunepitron, teniloxazine, thozalinone, thymoliberin, tianeptine, tiflucarbine, tofenacin, tofisopam, toloxatone, tomoxetine, tranylcypromine, trazodone, trimiprimine, venlafaxine, veralipride, vilazodone, viloxazine, viqualine, zimelidine and zometrapine, and pharmaceutically acceptable salts thereof, and St. John's wort herb, or Hypencuin perforatum, or extracts thereof.
  • Suitable classes of anti-anxiety agents for administering in combination with compounds of the present invention include 5-HTIA agonists or antagonists, especially 5-HTIA partial agonists, neurokinin recepter (NK) antagonists (e.g., saredutant and osanetant) and corticotropin releasing factor (CRF) antagonists. Suitable 5-HT1A receptor agonists or antagonists that may be used in the present invention include, in particular, the 5-HTIA receptor partial agonists buspirone, flesinoxan, gepirone and ipsapirone, and pharmaceutically acceptable salts thereof. An example of a compound with 5-HTIA receptor antagonist/partial agonist activity is pindolol. new 5HT1A agonists variza, alnespirone, gepirone, sunepitron, MKC242, vilazodone, eptapirone, and ORG12962 from Organon; new 5HT1A antagonists such as robalzotan; new 5-HT1B agonists such as elzasonan; new 5HT2 antagonists such as YM-992 (from Yamanouchi Pharmaceuticals) and nemifitide.
  • Antidepressant agents for use in accordance with the present invention may be obtained or produced according to any available means.
    • 3. Other Agents
  • Inventive combinations may further include one or more additional pharmaceutically active agents. For example, according to the present invention, the inventive combinations may be administered in conjunction with one or more other agents that is useful in treating depression or other mood disorders. Alternatively or additionally, inventive combinations may be administered with one or more other pharmaceutical agents active in treating any other symptom or medical condition present in the mammal that is related or unrelated to the depression or mood disorder being experienced by the mammal. Examples of such pharmaceutical agents include, for example, anti-angiogenic agents, anti-neoplastic agents, anti-diabetic agents, anti-infective agents, pain-relieving agents, anti-psychotic agents, gastrointestinal agents, etc., or combinations thereof. Other pharmaceutical agents useful in the practice of the present invention include, for example, adjunctive therapies typically used to enhance the effects of an antidepressant. Such adjunctive agents may include, for instance, mood stabilizers (e.g., lithium, valproic acid, carbamazepine, etc.); pindolol, stimulants (e.g., methylphenidate, dextroamphetamine, etc.); or thyroid augmenting agents (e.g., T3); antipsychotics, anti-anxiety agents (e.g., benzodiazepines), and/or agents that relieve sexual dysfunction (e.g., buspirone, which also has anti-anxiety effects; dopaminergic agents such as amantadine, pramipexole, etc.).
  • A more complete list of pharmaceutically active agents, can be found in the Physicians' Desk Reference, 55 Edition, 2001, published by Medical Economics Co., Inc., Montvale, N.J. Each of these agents may be administered in conjunction with one or more compounds of formula I according to the present invention. For most or all of these agents, recommended effective dosages and regimes are known in the art; many can be found in the above-referenced Physicians' Desk Reference, 55 Edition, 2001, published by Medical Economics Co., Inc., Montvale, N.J.
  • Particular pharmaceutical agents useful in conjunction with the inventive combinations are those discussed, for example, in United States Patent Application 2003/0092770, United States Patent Application 2004/0029972, United States Patent Application 2004/00220274, United States Patent Application 2005/0054676, or United States Patent Application 2005/0069936, each of which is incorporated herein by reference in its entirety.
    • 4. Pharmaceutical Compositions
  • While it is possible for the active ingredients of the inventive combination to be administered as raw chemicals, it is often desirable to present them in the context of one or more pharmaceutical formulations. Pharmaceutical formulations according to the present invention comprise a combination according to the invention together with one or more pharmaceutically acceptable carriers or excipients and optionally other therapeutic agents.
  • The present invention thus provides a pharmaceutical composition comprising one or more 5-HT2C receptor agonists of formula I:
  • Figure US20080269321A1-20081030-C00015
    • or a pharmaceutically acceptable salt thereof, wherein:
    • n is one or two;
    • each of R2 and R3 is independently hydrogen, methyl, ethyl, 2-fluoroethyl, 2,2-difluoroethyl or cyclopropyl;
    • each R1 is independently hydrogen, halogen, OH, lower alkyl, lower alkoxy, lower haloalkyl, lower haloalkoxy, or CN;
    • Ar is thienyl, furyl, pyridyl, or phenyl, wherein Ar is optionally substituted with one or more Rx substituents;
    • each Rx is independently selected from halogen, OH, lower alkyl, lower alkoxy, lower haloalkyl, lower haloalkoxy, or CN; and
    • n is one or two,
      or pharmaceutically acceptable salts thereof, and one or more antidepressant agents as a combined preparation for simultaneous, separate or sequential administration to treat a patient suffering from or susceptible to depression or other mood disorder.
  • Agents used in inventive combinations or compositions may be administered simultaneously, in the same or different pharmaceutical formulation, or sequentially. The timing of the sequential administration may desirably be selected to preserve the advantageous effects of the combination and said timing can be determined by a skilled practitioner. In other embodiments, the combinations are combined in a single unit dosage form.
  • A therapeutically effective amount of the combination will be understood to be an amount which treats, inhibits, prevents or ameliorates one or more symptoms of the depression or mood disorder in question. In certain embodiments of the invention, the combination will show improved efficacy as compared with that achieved by administration of the same amount of either the compound of formula I or the antidepressant agent alone. Furthermore, in certain embodiments, the effective amount of the combination produces fewer side effects than are observed when the antidepressant agent is administered alone at a dose that achieves substantially similar therapeutic efficacy.
  • The dosages of each of the drugs in the inventive combination may be determined by a physician and will often depend upon the specific circumstances of the depression or mood disorder, as well as the size, age and response pattern of the patient. Dosage guidelines are provided here. For the combination, the dosage guideline for each of the drugs of the combination would be considered.
  • In general, suitable doses of compound of formula I from about 0.5 mg per day to about 500 mg per day; in some embodiments from about 1 to about 500 mg per day.
  • A suitable dose of antidepressant agent may be in the range recommended by the manufacturer or reported in the literature. In some embodiments of the invention, the antidepressant agent is used at the low end of the range recommended by the manufacturer, or even below the range, in light of synergistic benefits that can be achieved according to the present invention. The following guidelines are provided for certain antidepressants useful in the practice of the present invention:
  • Amitryptiline: typically about 100-300 mg/day maintenance dose;
  • Buproprion: from about 100 to about 300 mg/day;
  • Citalopram: from about 5 to about 50 mg once/day; preferred, from about 10 to about 30 mg once/day;
  • Clomipramine: typically about 100-250 mg/day maintenance dose;
  • Duloxetine: from about 1 to about 30 mg once/day; preferred, from about 5 to about 20 mg once/day;
  • Fluoxetine: from about 1 to about 80 mg, once/day; preferred, from about 10 to about 40 mg once/day;
  • Fluvoxamine: from about 20 to about 500 mg once/day; preferred, from about 50 to about 300 mg once/day;
  • Imipramine: typically about 100-300 mg/day maintenance dose;
  • Isocarboxazid: typically about 10-20 mg/day maintenance dose;
  • Maprotiline: typically about 100-200 mg/day maintenance dose;
  • Mianserin: typically about 30-90 mg/day maintenance dose;
  • Milnacipran: from about 10 to about 100 mg once-twice/day; preferred, from about 25 to about 50 mg twice/day;
  • Mirtazapine: typically about 14-45 mg/day maintenance dose;
  • Moclobemide: typically about 300-600 mg/day maintenance dose;
  • Nefazodone: typically about 150-300 mg/day maintenance dose;
  • Nortriptyline: typically about 50-200 mg/day maintenance dose;
  • Paroxetine: from about 20 to about 50 mg once/day; preferred, from about 20 to about 30 mg once/day;
  • Phenelzine: typically about 15-60 mg/day maintenance dose;
  • Reboxetine: from about 1 to about 30 mg, once to four times/day; preferred, from about 5 to about 30 mg once/day;
  • Sertraline: from about 20 to about 500 mg once/day; preferred, from about 50 to about 200 mg once/day;
  • Tranylcypromine: typically about 30-60 mg/day maintenance dose;
  • Trazodone: typically about 75-300 mg/day maintenance dose;
  • Venlafaxine: from about 10 to about 150 mg once-thrice/day; preferred, from about 25 to about 125 mg thrice/day or about 30 to about 200 mg once a day, for example 37.5 mg, 75 mg, or 150 mg once a day;
  • Useful carriers for use in inventive pharmaceutical formulations are compatible with the other ingredients in the composition. According to the present invention, compounds of formula I may be administered with antidepressant agents in a single pharmaceutical formulation, or in multiple formulations. Where multiple formulations are employed, each may include both the compound of formula I and the antidepressant agent, or alternatively, each may include only one.
  • An inventive combination of one or more compounds of formula I and one or more antidepressant agents may conveniently be presented as a pharmaceutical formulation in a unitary dosage form. A convenient unitary dosage formulation contains the active ingredients in amounts from 0.1 mg to 1 g each, for example 1 mg to 500 mg. Typical unit doses may, for example, contain about 0.5 to about 500 mg, or about 1 mg to about 500 mg, of a compound of formula I.
  • According to the present invention, pharmaceutical formulations may be prepared as “patient packs” containing the whole course of treatment in a single package, for example a blister pack. Patient packs have an advantage over traditional prescriptions, where a pharmacist divides a patient's supply of a pharmaceutical from a bulk supply, in that the patient always has access to the package insert contained in the patient pack, normally missing in traditional prescriptions. The inclusion of a package insert has been shown to improve patient compliance with the physician's instructions.
  • It will be understood that the administration of the inventive combination by means of a single patient pack, or patient packs of each formulation, with a package insert directing the patient to the correct use of the invention is a desirable additional feature of this invention.
  • According to a further aspect of the invention, there is provided a patient pack comprising at least one active ingredient of the combination of the invention and an information insert containing directions on the use of the combination of the invention. In other embodiments, the present invention provides a patient pack comprising both active ingredients of the combination of the invention for simultaneous or sequential administration to a patient, and further comprising an information insert containing directions on the use of the combination of the invention. In certain embodiments, the present invention provides a patient pack comprising both active ingredients of the combination of the invention formulated into a single unit dosage form for administration to a patient, and further comprising an information insert containing directions on the use of the combination of the invention.
  • According to the present invention, combinations of one or more compounds of formula I and one or more antidepressant agents may be formulated for any mode of delivery including, for example, oral, rectal, nasal, topical (including transdermal, buccal and sublingual), vaginal or parenteral (including subcutaneous, intramuscular, intravenous and intradermal) administration. The formulations may be prepared by any methods well known in the art of pharmacy, for example, using methods such as those described in Gennaro et al., Remington's Pharmaceutical Sciences (18th ed., Mack Publishing Company, 1990, see especially Part 8: Pharmaceutical Preparations and their Manufacture). Such methods typically include a step of bringing into association the active ingredient(s) with the carrier which constitutes one or more accessory ingredients. Such accessory ingredients include, for example, fillers, binders, diluents, disintegrants, lubricants, colorants, flavouring agents and wetting agents.
  • Formulations suitable for oral administration may be presented, for example, as discrete units such as pills, tablets or capsules each containing a predetermined amount of active ingredient; as a powder or granules; as a solution or suspension. The active ingredient(s) may also be present as a bolus or paste, or may be contained within liposomes.
  • For oral administration, tablets containing various excipients such as microcrystalline cellulose, sodium citrate, calcium carbonate, dicalcium phosphate and glycine may be employed along with various disintegrants such as starch (and preferably corn, potato or tapioca starch), alginic acid and certain complex silicates, together with granulation binders like polyvinylpyrrolidone, sucrose, gelatin and acacia. Additionally, lubricating agents such as magnesium stearate, sodium lauryl sulfate and talc are often very useful for tabletting purposes. Solid compositions of a similar type may also be employed as fillers in gelatin capsules; preferred materials in this connection also include lactose or milk sugar as well as high molecular weight polyethylene glycols.
  • Formulations suitable for oral administration may alternatively be presented, for example, as liquids. When aqueous suspensions and/or elixirs are desired for oral administration, the active ingredient(s) may be combined with various sweetening or flavoring agents, coloring matter or dyes, and, if so desired, emulsifying and/or suspending agents as well, together with such diluents as water, ethanol, propylene glycol, glycerin and various like combinations thereof. Liquid formulations may be particularly useful for administration to children. In general, when preparing liquid formulations for administration to children, it is desirable to avoid or minimize use of alcohol in the formulation.
  • Formulations for rectal administration may be presented, for example, as a suppository or enema.
  • For parenteral administration, solutions of therapeutic agent(s) in either sesame or peanut oil or in aqueous propylene glycol may be employed. Aqueous solutions may be suitably buffered if necessary, and the liquid diluent may be rendered isotonic. Aqueous solutions are suitable for intravenous injection purposes. Oily solutions are suitable for intra-articular, intramuscular and subcutaneous injection purposes. The preparation of all these solutions under sterile conditions is readily accomplished by standard pharmaceutical techniques well known to those skilled in the art. Parenteral formulations may be presented in unit-dose or multi-dose containers, for example, sealed vials and ampoules, and may be stored in a freeze dried (lyophilized) condition requiring only the addition of the sterile liquid carrier, for example, water prior to use.
  • Preferred compositions for administration of inventive combinations by injection include those comprising the therapeutic agent(s) in association with a surface-active agent (or wetting agent or surfactant) or in the form of an emulsion (as a water-in-oil or oil-in-water emulsion). Suitable surface-active agents include, in particular, non-ionic agents, such as polyoxyethylenesorbitans (e.g., Tween™ 20, 40, 60, 80 or 85) and other sorbitans (e.g., Span™ 20, 40, 60, 80 or 85). Compositions with a surface-active agent will conveniently comprise between 0.05 and 5% surface-active agent, and preferably between 0.1 and 2.5%. It will be appreciated that other ingredients may be added, for example mannitol or other pharmaceutically acceptable vehicles, if necessary.
  • Suitable emulsions may be prepared using commercially available fat emulsions, such as Intralipid™, Liposyn™, Infonutrol™, Lipofundin™ and Lipiphysan™. The therapeutic agent(s) may be either dissolved in a pre-mixed emulsion composition or alternatively may be dissolved in an oil (e.g., soybean oil, safflower oil, cottonseed oil, sesame oil, corn oil or almond oil) and an emulsion formed upon mixing with a phospholipid (e.g., eggs phospholipids, soybean phospholipids or soybean lecithin) and water. It will be appreciated that other ingredients may be added, for example glycerol or glucose, to adjust the tonicity of the emulsion. Suitable emulsions will typically contain up to 20% oil, for example, between 5 and 20%. The fat emulsion will preferably comprise fat droplets between 0.1 and 1.0 .mu.m, particularly 0.1 and 0.5 .mu.m, and have a pH in the range of 5.5 to 8.0.
  • Compositions for inhalation or insufflation include solutions and suspensions in pharmaceutically acceptable, aqueous or organic solvents or mixtures thereof, and powders. The liquid or solid compositions may contain suitable pharmaceutically acceptable excipients as set out above. Preferably the compositions are administered by the oral or nasal respiratory route for local or systemic effect. Compositions in preferably sterile pharmaceutically acceptable solvents may be nebulised by use of inert gases. Nebulised solutions may be breathed directly from the nebulising device or the nebulising devise may be attached to a face mask, tent or intermittent positive pressure breathing machine. Solution, suspension, or powder compositions may be administered, preferably orally or nasally, from devices which deliver the formulation in an appropriate manner.
  • Compositions of the present invention may also be presented for administration in the form of transdermal patches using conventional technology. The compositions may also be administered via the buccal cavity using, for example, absorption wafers.
    • 5. Uses
  • Administration of the inventive combinations is useful to treat, prevent, delay, or reduce the severity of depression or another mood disorder from which the individual suffers or to which the individual is susceptible, or from one or more symptoms of depression or other mood disorder. For example, according to the present invention, combinations of one or more compounds of formula I and one or more antidepressive are useful in the treatment of disorders, for example, single episodic or recurrent major depressive disorders, dysthymic disorders, depressive neurosis, and neurotic depression; melancholic depression including anorexia, weight loss, insomnia and early morning waking, and psychomotor retardation; atypical depression (or reactive depression) including increased appetite, hypersomnia, psychomotor agitation or irritability, anxiety and phobias, seasonal affective disorder, or bipolar disorders or manic depression, for example, bipolar I disorder, bipolar II disorder and cyclothymic disorder. In some embodiments, inventive combinations are used to treat depression. In some embodiments, inventive combinations are used to treat bipolar disorder.
  • In other embodiments, compounds of the present invention are useful for treating one or more depressive disorders such as major depressive disorder, seasonal affective disorder, dysthymic disorder, substance-induced mood disorder, depressive disorder not otherwise specified, and treatment resistant depression.
  • Another aspect of the present invention provides a method for treating one or more mood episodes such as major depressive episode, manic episode, mixed episode, and hypomanic episode; and adjustment disorders such as adjustment disorders with anxiety and/or depressed mood.
  • Combinations of the present invention are also useful for treating symptoms related to depressive disorders including somatic symptoms such as neuropathic pain and sexual dysfunction. Other somatic symptoms include hopelessness, helplessness, anxiety and worries, memory complaints with or without objective signs of cognitive impairment, loss of feeling of pleasure (anhedonia), slowed movement, irritability, and lack of interest in personal care, such as poor adherence to medical or dietary regimens.
  • In certain embodiments, the present invention provides a method of treating sexual dysfunction related to depression. In other embodiments, the present invention provides a method of treating sexual dysfunction associated with administering a serotonin reuptake inhibitor (SRI) for treating a depressive or other disorder.
  • Combinations of the present invention are useful for treating sexual dysfunction in the male (e.g. male erectile dysfunction—MED) and in the female—female sexual dysfunction (FSD), e.g. female sexual arousal disorder (FSAD).
  • In other embodiments, the present invention provides a method for treating one or more disorders associated with sexual dysfunction including: HSDD, characterized by a deficiency, or absence of, sexual fantasies and desire for sexual activity; FSAD, characterized by a persistent or recurrent inability to attain, or to maintain until completion of the sexual activity, an adequate lubrication-swelling response of sexual excitement; FOD characterized by persistent or recurrent delay in, or absence of, orgasm following a normal sexual excitement phase; Sexual Pain Disorders such as dyspareunia and vaginismus; and/or HSDD characterized by a woman who has no or little desire to be sexual, and has no or few sexual thoughts or fantasies.
  • It was surprisingly found that compounds of the present invention provide a rapid onset of action as compared with other therapeutic agents typically used for treating depression and depressive disorders.
  • Alternatively or additionally, inventive combinations may be useful in the treatment of other mood disorders such as dysthymic disorder with early or late onset and with or without atypical features; dementia of the Alzheimer's type, with early or late onset, with depressed mood; vascular dementia with depressed mood, disorders induced by alcohol, amphetamines, cocaine, hallucinogens, inhalants, opioids, phencyclidine, sedatives, hypnotics, anxiolytics and other substances; schizoaffective disorder of the depressed type; and adjustment disorder with depressed mood.
  • The term “treatment”, as used herein, refers to reversing, alleviating, delaying the onset of, inhibiting the progress of, or preventing depression or another mood disorder, or one or more symptoms thereof, as described herein. In some embodiments, treatment may be applied after one or more symptoms have developed. In other embodiments, treatment may be administered in the absence of symptoms. For example, treatment may be administered prior to symptoms (e.g., in light of a history of symptoms and/or one or more other susceptibility factors), or after symptoms have resolved, for example to prevent or delay their reoccurrence.
  • Individuals to be treated in accordance with the present invention include those suffering from depression or a mood disorder, and those susceptible to depression or a mood disorder. In general, a patient is considered to be suffering from depression or a mood disorder if that patient shows an appropriate collection of accepted symptoms. A patient is considered to be susceptible to depression or a mood disorder or if, for example, that patient has a familial history of depression or of the mood disorder, or carries a known genetic susceptibility trait. A patient may also be considered to be susceptible if the patient has shown one or more symptoms of depression, or of the mood disorder, or has experienced an episode of depression or of the mood disorder, in the past.
  • In some embodiments the inventive combinations are useful for treatment-resistant depression. In other embodiments, the inventive combinations, when administered to treat depression or other mood disorders, show fewer undesirable side effects than are observed upon administration of the antidepressant alone in an amount that achieves comparabale relief of depression. Alternatively or additionally, the inventive combinations show more rapid onset of activity than do the antidepressants alone.
  • Those of ordinary skill in the art will also appreciate that, particularly given the high comorbidity of depression and psychotic disorders, inventive combinations may also be used to treat one or more psychotic disorders, or symptoms thereof. For example, in some embodiments, inventive combinations may be used in the treatment of psychotic disorders or episodes. For example, according to the present invention, combinations of one or more compounds of formula I and one or more anti-psychotic agents may be used in the treatment of schizophrenia including paranoid type, disorganized type, catatonic type, and undifferentiated type, schizophreniform disorder, schizoaffective disorder, delusional disorder, substance-induced psychotic disorder, and psychotic disorder not otherwise specified; L-DOPA-induced psychosis; psychosis associated with Alzheimer's dementia; psychosis associated with Parkinson's disease; psychosis associated with Lewy body disease; bipolar disorders such as bipolar I disorder, bipolar II disorder, and cyclothymic disorder; dementia, and depression with psychotic features. In some embodiments, inventive combinations are useful in the treatment of bipolar disorder. A more complete description of the aforementioned mental disorders can be found in the Diagnostic and Statistical Manual of Mental Disorders, 4th edition, Washington, D.C., American Psychiatric Association (1994), incorporated herein by reference in its entirety. In some embodiments, the inventive combinations are used to treat schizophrenia. In some embodiments, the inventive combinations are used to treat bipolar disorder.
    • EXAMPLES Assessment of Effectiveness in Tail Suspension Test
  • Compound 1, (7-(2,6-dichlorophenyl)-5-fluoro-2,3-dihydrobenzofuran-2-yl)methanamine, was used to exemplify the effectiveness of compounds of the present invention in the tail suspension test. While not a direct model of depression, the tail suspension test is an assay that can evaluate antidepressant-like effects of drugs. Clinically effective drugs such as Prozac (fluoxetine) are effective in this assay. Specifically, they decrease the amount of time the mice spend immobile after being hung upside down by their tails during the test. It is impossible to determine if a mouse is indeed depressed. However, the fact that clinically effective antidepressants reduce immobility lends predictive validity to the model.
  • Male Swiss Webster mice (Charles River) weighing 20-35 g were used throughout this study. They were housed in groups of five per cage in an AALAC-accredited facility that was maintained on a 12-h light dark cycle (lights on at 0600 h) and had free access to food and water. Experimental groups consisted of 12 mice, randomly assigned to treatment groups. All experiments were performed between 9:00 AM and noon in accordance to the Guide for the Care and Use of Laboratory Animals as adopted and promulgated by the National Institutes of Health (Pub. 85-23, 1985).
  • Solutions of Compound 1 and paroxetine were freshly prepared. Compound 1 was dissolved in saline and paroxetine was dissolved in distilled water. All drugs were injected i.p. at a volume of 10 ml/kg body weight. Combination treatments were cotreated, 30 minutes prior to the test.
  • The procedure followed in this study was a variant of the one originally described by Steru et al. (1985). 30 minutes following treatment, the mice were suspended upside down by the tail using adhesive laboratory tape (VWR International), to a flat metal bar connected to a strain gauge within a tail suspension chamber (Med Associates). The time spent immobile during a 6-minute test session was automatically recorded. 8 mice were simultaneously tested within separate chambers. Data collected were expressed as a mean of immobility time and statistical analysis was performed using a one-way ANOVA with least significant difference (LSD) post-hoc test.
  • Neither Compound 1 (0.1 mg/kg) nor either dose of paroxetine (10 or 30 mg/kg) produced antidepressant-like effects alone. 10 and 30 mg/kg of paroxetine produced 5% and 4% decreases in immobility time respectively when dosed alone. The combination of 10 and 30 mg/kg of paroxetine with 0.1 mg/kg of Compound 1 produced decreases in immobility time of 31% and 23% respectively, indicating an enhancement of the antidepressant-like effects of paroxetine. See FIG. 1.
  • The entire disclosure of each patent, patent application, and publication cited or described in this document is hereby incorporated by reference.
  • While we have presented a number of embodiments of this invention, it is apparent that our basic construction can be altered to provide other embodiments which utilize the compounds and methods of this invention. Therefore, it will be appreciated that the scope of this invention is to be defined by the appended claims rather than by the specific embodiments which have been represented by way of example.

Claims (15)

1-16. (canceled)
17. A method of treating a patient suffering from a depression or a mood disorder comprising administering to said patient a therapeutically effective amount of a a composition comprising a compound of formula I:
Figure US20080269321A1-20081030-C00016
or a pharmaceutically acceptable salt thereof, wherein:
n is one or two;
each of R2 and R3 is independently hydrogen, methyl, ethyl, 2-fluoroethyl, 2,2-difluoroethyl or cyclopropyl;
each R1 is independently hydrogen, halogen, OH, lower alkyl, lower alkoxy, lower haloalkyl, lower haloalkoxy, or CN;
Ar is thienyl, furyl, pyridyl, or phenyl, wherein Ar is optionally substituted with one or more Rx substituents;
each Rx is independently selected from halogen, OH, lower alkyl, lower alkoxy, lower haloalkyl, lower haloalkoxy, or CN; and
y is 0-3;
and an antidepressant.
18. A method of treating a patient suffering from anxiety comprising administering to said patient a therapeutically effective amount of an anxiety-reducing composition comprising a compound of formula I:
Figure US20080269321A1-20081030-C00017
or a pharmaceutically acceptable salt thereof, wherein:
n is one or two;
each of R2 and R3 is independently hydrogen, methyl, ethyl, 2-fluoroethyl, 2,2-difluoroethyl or cyclopropyl;
each R1 is independently hydrogen, halogen, OH, lower alkyl, lower alkoxy, lower haloalkyl, lower haloalkoxy, or CN;
Ar is thienyl, furyl, pyridyl, or phenyl, wherein Ar is optionally substituted with one or more Rx substituents;
each Rx is independently selected from halogen, OH, lower alkyl, lower alkoxy, lower haloalkyl, lower haloalkoxy, or CN; and
y is 0-3;
and an antidepressant.
19. A method of treating a patient suffering from a psychotic disorder comprising administering to said patient an therapeutically effective amount of a composition comprising a compound of formula I:
Figure US20080269321A1-20081030-C00018
or a pharmaceutically acceptable salt thereof, wherein:
n is one or two;
each of R2 and R3 is independently hydrogen, methyl, ethyl, 2-fluoroethyl, 2,2-difluoroethyl or cyclopropyl;
each R1 is independently hydrogen, halogen, OH, lower alkyl, lower alkoxy, lower haloalkyl, lower haloalkoxy, or CN;
Ar is thienyl, furyl, pyridyl, or phenyl, wherein Ar is optionally substituted with one or more Rx substituents;
each Rx is independently selected from halogen, OH, lower alkyl, lower alkoxy, lower haloalkyl, lower haloalkoxy, or CN; and
y is 0-3;
and an antidepressant.
20. The method of claim 19 wherein the patient is suffering from schizophrenia.
21. A method of treating a patient suffering from bipolar disorder comprising administering to said patient a therapeutically effective amount of a composition comprising a compound of formula I:
Figure US20080269321A1-20081030-C00019
or a pharmaceutically acceptable salt thereof, wherein:
n is one or two;
each of R2 and R3 is independently hydrogen, methyl, ethyl, 2-fluoroethyl, 2,2-difluoroethyl or cyclopropyl;
each R1 is independently hydrogen, halogen, OH, lower alkyl, lower alkoxy, lower haloalkyl, lower haloalkoxy, or CN;
Ar is thienyl, furyl, pyridyl, or phenyl, wherein Ar is optionally substituted with one or more Rx substituents;
each Rx is independently selected from halogen, OH, lower alkyl, lower alkoxy, lower haloalkyl, lower haloalkoxy, or CN; and
v is 0-3;
and an antidepressant.
22. The method according to claim 17, wherein the antidepressant is selected from the group consisting of seratonin reuptake inhibitors (SRIs), norepinephrine reuptake inhibitors (NERIs), combined serotonin-norepinephrine reuptake inhibitors (SNRIs), monoamine oxidase inhibitors (MAOIs), reversible inhibitors of monoamine oxidase (RIMAs), phosphodiesterase-4 (PDE4) inhibitors, corticotropin releasing factor (CRF) antagonists, alpha.-adrenoreceptor antagonists, and combinations thereof.
23. The method according to claim 17, wherein the antidepressant is selected from the group consisting of adinazolam, alaproclate, amineptine, amitriptyline, amitriptyline/chlordiazepoxide combination, amoxapine, atipamezole, azamianserin, bazinaprine, befuraline, bifemelane, binodaline, bipenamol, brofaromine, buproprion, caroxazone, cericlamine, cianopramine, cimoxatone, citalopram, clemeprol, clomipramine, clovoxamine, dazepinil, deanol, demexiptiline, desipramine, O-desmethylvenlafaxine, dibenzepin, dothiepin, doxepin, droxidopa, duloxetine, enefexine, escitalopiam, estazolam, etoperidone, femoxetine, fengabine, fezolamine, fluotracen, fluoxetine, fluvoxamine, idazoxan, imipramine, indalpine, indeloxazine, iprindole, isocarboxazid, levoprotiline, lithium, litoxetine, lofepramine, maprotiline, medifoxamine, metapramine, metralindole, mianserin, milnacipran, minaprine, mirtazapine, moclobemide, montirelin, nebracetam, nefazodone, nefopam, netazodane, nialamide, nomifensine, norfluoxetine, nortriptyline, orotirelin, oxaflozane, paroxetine, phenelzine, pinazepam, pirlindone, pizotyline, protriptyline, reboxetine, ritanserin, rolipram, selegiline, sercloremine, sertraline, setiptiline, sibutramine, sulbutiamine, sulpiride, teniloxazine, thozalinone, thymoliberin, tianeptine, tiflucarbine, tofenacin, tofisopam, toloxatone, tomoxetine, tranylcypromine, trazodone, trimipramine, venlafaxine, veralipride, viloxazine, viqualine, zimelidine, zometrapine, pharmaceutically acceptable salts thereof, and combinations thereof.
24. The method according to claim 17, wherein administration of the compounds is oral.
25. The method according to claim 17, wherein the patient is suffering from depression.
26. The method according to claim 17, wherein the patient is suffering from anxiety.
27. The method according to claim 17, wherein the patient is further suffering from a psychotic disorder.
28. The method according to claim 27, wherein the patient is suffering from schizophrenia.
29. The method of claim 27 wherein the patient is suffering from bipolar disorder.
30. The method according to claim 17, wherein the patient is suffering from a mood disorder selected from the group consisting of dysthymic disorder with early or late onset and with or without atypical features; dementia of the Alzheimer's type, with early or late onset, with depressed mood; vascular dementia with depressed mood, disorders induced by alcohol, amphetamines, cocaine, hallucinogens, inhalants, opioids, phencyclidine, sedatives, hypnotics, anxiolytics; schizoaffective disorder of the depressed type; adjustment disorder with depressed mood; and combinations thereof.
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