WO2006025517A1 - ナトリウムチャネル阻害剤 - Google Patents
ナトリウムチャネル阻害剤 Download PDFInfo
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- WO2006025517A1 WO2006025517A1 PCT/JP2005/016085 JP2005016085W WO2006025517A1 WO 2006025517 A1 WO2006025517 A1 WO 2006025517A1 JP 2005016085 W JP2005016085 W JP 2005016085W WO 2006025517 A1 WO2006025517 A1 WO 2006025517A1
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- lower alkyl
- compound
- pharmaceutically acceptable
- piperidine
- active ingredient
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D211/00—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings
- C07D211/04—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom
- C07D211/06—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having no double bonds between ring members or between ring members and non-ring members
- C07D211/08—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having no double bonds between ring members or between ring members and non-ring members with hydrocarbon or substituted hydrocarbon radicals directly attached to ring carbon atoms
- C07D211/10—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having no double bonds between ring members or between ring members and non-ring members with hydrocarbon or substituted hydrocarbon radicals directly attached to ring carbon atoms with radicals containing only carbon and hydrogen atoms attached to ring carbon atoms
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- 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
- A61P25/04—Centrally acting analgesics, e.g. opioids
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D211/00—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings
- C07D211/04—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom
- C07D211/06—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having no double bonds between ring members or between ring members and non-ring members
- C07D211/08—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having no double bonds between ring members or between ring members and non-ring members with hydrocarbon or substituted hydrocarbon radicals directly attached to ring carbon atoms
- C07D211/18—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having no double bonds between ring members or between ring members and non-ring members with hydrocarbon or substituted hydrocarbon radicals directly attached to ring carbon atoms with substituted hydrocarbon radicals attached to ring carbon atoms
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D211/00—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings
- C07D211/04—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom
- C07D211/06—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having no double bonds between ring members or between ring members and non-ring members
- C07D211/08—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having no double bonds between ring members or between ring members and non-ring members with hydrocarbon or substituted hydrocarbon radicals directly attached to ring carbon atoms
- C07D211/18—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having no double bonds between ring members or between ring members and non-ring members with hydrocarbon or substituted hydrocarbon radicals directly attached to ring carbon atoms with substituted hydrocarbon radicals attached to ring carbon atoms
- C07D211/20—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having no double bonds between ring members or between ring members and non-ring members with hydrocarbon or substituted hydrocarbon radicals directly attached to ring carbon atoms with substituted hydrocarbon radicals attached to ring carbon atoms with hydrocarbon radicals, substituted by singly bound oxygen or sulphur atoms
- C07D211/22—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having no double bonds between ring members or between ring members and non-ring members with hydrocarbon or substituted hydrocarbon radicals directly attached to ring carbon atoms with substituted hydrocarbon radicals attached to ring carbon atoms with hydrocarbon radicals, substituted by singly bound oxygen or sulphur atoms by oxygen atoms
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D409/00—Heterocyclic compounds containing two or more hetero rings, at least one ring having sulfur atoms as the only ring hetero atoms
- C07D409/02—Heterocyclic compounds containing two or more hetero rings, at least one ring having sulfur atoms as the only ring hetero atoms containing two hetero rings
- C07D409/04—Heterocyclic compounds containing two or more hetero rings, at least one ring having sulfur atoms as the only ring hetero atoms containing two hetero rings directly linked by a ring-member-to-ring-member bond
Definitions
- the present invention relates to a sodium channel inhibitor, a novel piperidine derivative or a pharmaceutically acceptable salt thereof, and a pharmaceutical composition containing the same as an active ingredient. More specifically, a sodium channel inhibitor having a high analgesic effect on neuropathic pain and reduced side effects, a novel piperidine derivative useful as a sodium channel inhibitor, or a pharmaceutically acceptable salt thereof. And a pharmaceutical composition containing the same as an active ingredient.
- Voltage-dependent sodium channels are proteins that control the generation and propagation of nerve action potentials.
- the voltage-gated sodium channel has a common structure with six transmembrane domain forces S4 repeated large a subunit and two small ⁇ subunits.
- the main channel function is a subunit.
- there are more than 10 a-subunit subtypes Goldin AL, Annals of the New York Academy of Sciences 868: 38-50, 1999.
- Each voltage-gated sodium channel subtype has a different distribution in the central and peripheral nervous tissues. They regulate nerve excitability and play an important role in regulating the physiological functions of each tissue. It has also been suggested to be deeply involved in various pathological conditions (Goldin AL, Annual Review of Physiology 63: 871-894, 2001).
- Neuropathic pain means pain due to peripheral or central nervous system dysfunction, including diabetic neuropathic pain, cancer pain, trigeminal neuralgia, phantom limb pain, postherpetic pain, thalamic pain, etc. Can be mentioned.
- the clinical picture of neuropathic pain is painful tightening, burning pain, Hyperalgesia and allodynia.
- Non-steroidal anti-inflammatory drugs and narcotic analgesics such as morphine are used for the purpose of pain relief in the medical field, and more recently, antiarrhythmic drugs and anticonvulsants that are sodium channel inhibitors Has also been used for pain relief purposes.
- non-steroidal anti-inflammatory drugs the analgesic effect is not necessarily completely satisfactory, and also has side effects such as gastrointestinal disorders and kidney disorders.
- Narcotic analgesics such as morphine are mainly effective against nociceptive pain, but have serious problems of side effects on the digestive system, respiratory system and central nervous system. In general, these drugs are less effective against neuropathic pain.
- Existing sodium channel inhibitors such as antiarrhythmic drugs such as lidocaine and mexiletine, and anticonvulsants such as carbamazepine, have come to be used for pain relief.
- sodium channel inhibitor that has a high analgesic effect especially on neuropathic pain and has reduced side effects.
- sodium channel inhibitors include the following general formula:
- W represents an optionally substituted C alkylene group, etc., and Z may be substituted.
- R 1 and R 2 are hydrogen atoms, etc.
- Patent Document 1 Shows See Patent Document 1 for details of symbols in the above formula. ) Is disclosed in International Publication No. WO01Z53288 pamphlet (hereinafter referred to as Patent Document 1).
- the piperidine ring has a lower alkylene group or the like (W ) Is bonded to an aromatic hydrocarbon ring group or the like (z), and is bonded to an oxodihydropyridine ring via a lower alkylene at the 1-position of the piperidine ring.
- W lower alkylene group or the like
- z aromatic hydrocarbon ring group or the like
- the basic structure is completely different from the active ingredient in a nele inhibitor and the piperidine derivative of the present invention or a pharmaceutically acceptable salt thereof.
- Patent Document 2 Compound (1-1) is disclosed in International Publication No. WO03Z6 3874 (hereinafter referred to as Patent Document 2) as a synthetic intermediate of compound (A) represented by compound (A) (1-1). (See Reference Example 30 in Patent Document 2).
- Patent Document 2 describes that compound (A) has a neuronal cell protective action as a PARP inhibitor, compound (A) and compound (1) which is a synthetic intermediate thereof (1)
- -1) has sodium channel inhibitory action and exhibits analgesic action on neuropathic pain.
- Compound (1-2) is disclosed in US Pat. No. 5,668,151 (hereinafter referred to as Patent Document 3) as a synthetic intermediate of Compound (B) represented by (see Example 33 of Patent Document 3). Only however, although it is described that the compound) is used for the treatment of hypertension or obesity, the compound (B) and the compound (1-2) which is a synthetic intermediate thereof have a sodium channel inhibitory action, There is no suggestion or disclosure of an analgesic effect on neuropathic pain.
- the present invention relates to a sodium channel inhibitor having a high analgesic effect on neuropathic pain and reduced side effects, a novel piperidine derivative useful as a sodium channel inhibitor, or a pharmaceutically acceptable salt thereof.
- the object is to provide an acceptable salt and a pharmaceutical composition containing it as an active ingredient.
- a cyclic piperidine derivative or a pharmaceutically acceptable salt thereof has a strong inhibitory action (activity) on sodium channels, and also against streptozotocin-induced diabetic neuropathy mice that are pathological animal models.
- a novel tricyclic piperidine derivative in which the benzene ring and the piperidine ring are bonded at the ortho position of the benzene ring (A ring), and the A ring is a thiophene ring.
- the inventors have found that a novel tricyclic piperidine derivative has a particularly strong inhibitory action (activity) on a sodium channel, thereby completing the present invention. That is, according to the present invention, the following sodium channel inhibitor, a novel piperidine derivative useful as a sodium channel inhibitor, or a pharmaceutically acceptable salt thereof, and a pharmaceutical containing the same as an active ingredient A composition is provided.
- Ring A a benzene ring, or a 5- or 6-membered heterocycle having 1 to 3 heteroatoms selected from N, S, and O,
- a sodium channel inhibitor containing a salt as an active ingredient (hereinafter sometimes referred to as “first aspect of the invention”).
- Ru der those represented by the piperidine derivative or a pharmaceutically acceptable salt thereof.
- a pharmaceutical composition comprising the piperidine derivative or a pharmaceutically acceptable salt thereof according to any one of [2] to [4] as an active ingredient.
- a sodium channel inhibitor having a high analgesic effect on neuropathic pain and reduced side effects a novel piperidine derivative useful as a sodium channel inhibitor, or a pharmaceutically acceptable salt thereof.
- a pharmaceutical composition containing the same as an active ingredient a sodium channel inhibitor (piberidine derivative represented by the above general formula (I) (hereinafter sometimes referred to as “active ingredient (I)”), or a pharmaceutically acceptable salt thereof.
- the present compound (I) a piberidine derivative represented by the above general formula (a) or (b) of the present invention (second aspect of the present invention) (hereinafter sometimes referred to as “the present compound (I)”) or
- the pharmaceutically acceptable salt was confirmed to be a compound having sodium channel inhibitory activity superior to mexiletine. It was also confirmed that diabetic neuropathy mice, which are pathological animal models, show good analgesic effects by oral administration.
- lower means a straight or branched carbon chain having 1 to 6 carbon atoms unless otherwise specified.
- lower alkyl include C such as methyl, ethyl, propyl, isopropyl, butyl, isobutyl, sec-butyl, tert-butyl, pentyl, isopentyl, neopentyl, tert-pentyl, hexyl, isohexyl and the like.
- N, S, O force "5-membered or 6-membered heterocycle having 1 to 3 selected heteroatoms” includes a saturated or unsaturated 5-membered or 6-membered heterocycle, Specifically, unsaturated rings such as furan, thiophene, pyrrole, pyridine, oxazole, isoxazole, thiazole, isothiazole, furazane, imidazole, pyrazole, pyrazine, pyrimidine, pyridazine; pyrrolidine, imidazolidine, virazolidine, piperidine And saturated rings such as piperazine, morpholine, etc., preferably furan, thiophene, pyrimidine, morpholine, and particularly preferably thiophene.
- unsaturated rings such as furan, thiophene, pyrrole, pyridine, oxazole, isoxazole, thiazole, isothiazole, furazane,
- halogen atom examples include fluorine, chlorine, bromine and iodine, preferably fluorine and chlorine.
- Cycloalkyl means a 1 to 3 ring aliphatic saturated hydrocarbon ring group having 3 to 14 carbon atoms, such as cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, cycloheptyl. , Cyclooctyl, bicycloheptyl, bicyclooctyl, bicyclononi Such as cyclopropyl, cyclobutyl, cyclopentyl, cyclocyclohexyl, cyclocyclohexyl, tricyclohexyl, cyclohexane, tricyclodode, and tricyclodode. Heptyl and cyclooctyl.
- Aryl means a 1 to 3 ring aromatic hydrocarbon ring group having 6 to 14 carbon atoms, and examples thereof include phenol, naphthyl, anthryl, phenanthryl and the like. Are fuel and naphthyl.
- the active ingredient (I) and the compound (I) of the present invention exist as optical isomers (optically active forms, diastereomers, etc.) or geometric isomers depending on the type of substituent. Therefore, the active ingredient (I) and the compound (I) of the present invention include those optical isomers or mixtures of these geometric isomers and isolated ones.
- the active ingredient (I) and the compound (I) of the present invention can form an acid addition salt or a salt with a base.
- acid addition salts with inorganic acids such as hydrochloric acid, hydrobromic acid, hydroiodic acid, sulfuric acid, nitric acid, phosphoric acid; formic acid, acetic acid, propionic acid, oxalic acid, malonic acid, succinic acid, fumaric acid
- Acid addition salts with organic acids such as maleic acid, lactic acid, malic acid, citrate, tartaric acid, carbonic acid, picric acid, methanesulfonic acid, ethanesulfonic acid, glutamic acid; inorganic such as sodium, potassium, magnesium, calcium, aluminum Salts with bases; salts with organic bases such as methylamine, ethylamine, monoethanolamine, diethanolamine, triethanolamine, cyclohexylamine, lysine, and orthotin.
- the active ingredient (I) and the compound of the present invention (1), or a pharmaceutically acceptable salt thereof can form hydrates, solvates such as ethanol, and crystal polymorphs. There is a case.
- the active ingredient (I) and the compound (I) of the present invention are metabolized in vivo into the active ingredient (I) and the compound (I) of the present invention, or a pharmaceutically acceptable salt thereof.
- the active ingredient (I) and the compound (I) of the present invention can be produced by applying various synthetic methods utilizing characteristics based on the basic skeleton or the type of substituent. The following describes typical manufacturing methods.
- M represents Li, MgBr or the like.
- Y represents an amino group such as a tert-butoxycarbol group or a benzyloxycarboro group. The same applies hereinafter.
- the active ingredient (I) and the compound (I) of the present invention can be produced by applying various synthetic methods using the characteristics based on the basic skeleton or the type of substituents.
- Explain the typical manufacturing method Conventional methods such as Aryl Lithium, Aryl Grignard reagent, etc. Reaction of aryl metal and nitrogen with an oxopiperidine derivative protected with an amino protecting group (
- the active ingredient (I) and the compound (I) of the present invention, or a pharmaceutically acceptable salt thereof thus produced remain free or are simply used as a pharmaceutically acceptable salt thereof. Be released.
- the salt of the active ingredient (I) and the compound (I) of the present invention can be produced by subjecting the active ingredient (I) which is a free base and the compound (I) of the present invention to a usual salt formation reaction.
- Isolation and purification of the active ingredient (I) thus produced and the compound (I) of the present invention, or a pharmaceutically acceptable salt thereof include extraction, concentration, distillation, crystallization, and filtration. It is carried out by applying ordinary chemical operations such as recrystallization, various chromatographies and the like.
- Various isomers can be separated by selecting an appropriate raw material compound or by utilizing a difference in physical or chemical properties between isomers.
- optical isomers can be obtained by selecting appropriate raw materials or by resolving a racemic compound (for example, a method of optically resolving a diastereomeric salt with a general optically active acid). Can lead to sterically pure isomers.
- the active ingredient (I) and the compound of the present invention (1), or pharmaceutically acceptable salts thereof are generally Various commonly used formulations can be applied. The following explains the typical prescription.
- the pharmaceutical composition containing active ingredient (I) and compound (1) of the present invention, or one or more of pharmaceutically acceptable salts thereof as an active ingredient includes a pharmaceutically acceptable carrier.
- the dosage of the active ingredient (I) and the compound (I) of the present invention, or a pharmaceutically acceptable salt thereof is determined in consideration of the patient's symptoms, body weight, age, sex, route of administration, etc. Force determined as appropriate according to individual case Normal adult per day, 1 mg per day: LOOOmg, preferably in the range of 10 mg to 200 mg.
- the dose varies depending on various conditions, and therefore a dose smaller than the above dose may be sufficient.
- At least one active substance contains at least one inert diluent such as lactose, mannitol, glucose, hydroxypropylcellulose, microcrystalline cellulose, starch, polybulurpyrrolidone, Mixed with magnesium metasilicate aluminate.
- inert diluent such as lactose, mannitol, glucose, hydroxypropylcellulose, microcrystalline cellulose, starch, polybulurpyrrolidone, Mixed with magnesium metasilicate aluminate.
- composition is prepared according to conventional methods with additives other than inert diluents, eg lubricants such as magnesium stearate; disintegrants such as starch, fibrinoglycolic acid lucum; stabilization such as ratatoses An agent; it may contain a solubilizing agent such as glutamic acid and aspartic acid. If necessary, tablets or pills may be coated with sugar coating such as sucrose, gelatin, hydroxypropinolecellulose, hydroxypropinolemethinolecellulose phthalate, or a gastric or enteric film.
- additives other than inert diluents eg lubricants such as magnesium stearate; disintegrants such as starch, fibrinoglycolic acid lucum; stabilization such as ratatoses An agent; it may contain a solubilizing agent such as glutamic acid and aspartic acid.
- tablets or pills may be coated with sugar coating such as sucrose, gelatin, hydroxypropinolecellulose,
- Liquid compositions for oral administration include pharmaceutically acceptable emulsions, solutions, suspensions, syrups, elixirs, etc., and generally used inert diluents. Examples include purified water and ethanol. In addition to the inert diluent, this composition contains solubilizing or solubilizing aids, wetting agents, suspending agents, etc .; sweeteners; flavoring agents; fragrances; preservatives, etc. You may have.
- Injections for parenteral administration include sterile aqueous or non-aqueous solutions, suspensions, and emulsions.
- aqueous solution and suspension include distilled water for injection and physiological saline.
- water-insoluble solutions and suspensions include propylene glycol, polyethylene glycol, vegetable oils such as olive oil; alcohols such as ethanol; polysorbate 80 (trade name).
- Such a composition further includes additives such as isotonic agents, preservatives, wetting agents, emulsifiers, dispersants, stabilizers (eg, extra leuth), soluble soot or solubilizing aids. May be included.
- These are sterilized by, for example, filtration through a bacteria-retaining filter, blending with a bactericide, or irradiation. They can also be prepared by preparing a sterile solid composition and dissolving it in sterile water or sterile injection solvent before use.
- the active ingredient (I) and the compound of the present invention (1), or a pharmaceutically acceptable salt thereof may be used together with other drugs effective for pain.
- Drugs effective for pain that can be used in combination include narcotic analgesics, antipyretic analgesics, non-steroidal anti-inflammatory drugs, and the like.
- reaction solution (1 ) Magnesium 871 mg of jetyl ether 15 ml suspension in a stream of argon under ice-cooling bromine 1.38 ml was added dropwise and stirred for 30 minutes under ice-cooling, followed by stirring for about 1 hour at room temperature (reaction solution (1 )).
- reaction solution (1 ) On the other hand, to 12.5 ml of butyllithium hexane solution in an argon stream, 40 ml of a solution of 3.28 g of 3 bromo-2-phenolthiophene in ⁇ 78 ° C. was dropped, and then the reaction solution (1) was dropped. After completion of dropping, the mixture was stirred at room temperature for 1 hour. The resulting reaction suspension was concentrated under an argon atmosphere (reaction liquid (2)).
- the purified product was dissolved in ethanol, and 0.14 ml of 4M hydrochloric acid / ethyl acetate solution was added and concentrated to obtain crystals.
- the obtained crystals were recrystallized from ethanol ethyl acetate to obtain 93 mg of 4 (4′-methoxybiphenyl-2-yl) piperidine monohydrochloride.
- tert-Butyl 4-one (4-monofluorobiphenyl 2-yl) -4-hydroxypiberidine-1 carboxylate and tert-butyl 4-oxopiperidine 1 carboxylate mixture 500 mg, triethylsilane 2 ml, trifluoroacetic acid 4 ml was added and stirred at room temperature for 1 hour.
- the obtained reaction solution was concentrated, a saturated aqueous sodium hydrogen carbonate solution was added to the concentrated residue, and the mixture was extracted with chloroform. Filter the organic layer after drying over anhydrous sodium sulfate And the filtrate was concentrated.
- the concentrated residue was purified by silica gel column chromatography (black mouth formome tan-lu ammonia water) to obtain 179 mg of 4,1- (1,4-fluorobifur-lu 2 yl) -1,2,3,6-tetrahydropyridine. .
- 4 1 (4,1 Fluorobiphe 2 ro 2 yl) 1, 2, 3, 6-tetrahydropyridine 179 mg of ethanol in 5 ml solution, 1M hydrochloric acid solution in 1 ml, 10% palladium on activated carbon in 20 mg The mixture was stirred at room temperature for 2 hours.
- tert-Butyl 4-hydroxy-4- (2,1-methylbiphenyl-2-yl) piperidine-1-carboxylate and tert-butyl 4-oxopiperidine-1-carboxylate 640 mg in ethanol 10 ml solution
- 2 ml of tetrahydrofuran and 100 mg of palladium hydroxide were added, and the mixture was stirred at room temperature for 3 days under a hydrogen atmosphere of about 3.4 atm.
- the resulting reaction solution is filtered, and the filtrate is concentrated.
- the concentrated residue is purified by silica gel column chromatography (hexane ethyl acetate) and tert-butyl 4- (2, -methylbiphenyl-2-yl) piperidine.
- — 1 Carboxylate 150 mg was obtained.
- tert-butyl 4- (2'methylbiphenyl-2-yl) piperidine monocarboxylate 203 mg of ethanol 2 ml of the suspension was added 4 M hydrochloric acid / ethyl acetate solution 5 ml and stirred at room temperature for 2 hours. .
- the resulting reaction solution was concentrated, and the crystallized residue was recrystallized using ethanol ethyl acetate to obtain 157 mg of 4- (2, -methylbiphenyl-2-yl) piperidine monohydrochloride. .
- tert-Butyl 4-hydroxy 1 (5 phenol 1 2-cell) piperidine 1 1-power ruboxylate and tert-butyl 4-oxopiperidine 1-carboxylate 1.
- 3 g, 3 ml of triethylsilane, trifluoroacetic acid 6 ml was added and stirred in a water bath for 1 hour.
- Concentrate the resulting reaction solution add saturated aqueous sodium hydrogen carbonate solution to the concentrated residue, extract with chloroform, dry the organic layer over anhydrous sodium sulfate, filter, and concentrate the filtrate. did.
- the concentrated residue was purified by silica gel column chromatography (black mouth form 1 methanol 1 ammonia water).
- Tables 1 to 6 show the chemical structural formulas and physicochemical properties of the compounds obtained in Reference Examples and Examples.
- the compounds described in Tables 7 to 9 can be easily obtained by using the above-mentioned production methods, reference examples, production methods of Examples, production methods known to those skilled in the art, and variations thereof. be able to.
- the pregnant rat HWistar, female, 19 days of gestation was anesthetized with ether and bleeded by carotid artery amputation.
- the fetus was removed from the pregnant rat, disinfected with ethanol for disinfection, and then the cerebral cortex was extracted.
- the cerebral cortex is digested with papain, dispersed in the culture medium, and seeded on a 96-well white plate coated with poly-L-lysine at a density of 2.5 X 10 5 cells / well, and CO
- the cells were cultured for 2 days at 2 beta (37 ° C, 5% CO 2).
- reaction solution (test compound, [ W C] guanidine and 100 M veratridine) was substituted and incubated at 25 ° C. for 15 minutes. Stop the reaction by washing 3 times with cold wash buffer (135 mM NaCI, 5 mM KCl, ImM MgSO, lOmM Hepes-Tris, pH 7.4).
- the active ingredient (I) and the compound (I) of the present invention have an IC value of about 3 to 30 ⁇ .
- the inhibitory effect of the active ingredient (I) and the representative compound (I) of the present invention on neuropathic pain is the analgesic action in streptozotocin (STZ) -induced diabetic neuropathy mice. Confirmed by evaluation. Evaluation was carried out by partially modifying the method of Kamei et al. (Pharmacology Biochemistry & Behavior 39, 541-544, 1991).
- the test compound was orally administered at 30 mgZkg 45 minutes before measuring the response latency.
- the analgesic action of the test compound is expressed as the latency extension (seconds) according to the formula of (response latency after test compound administration) (response latency before test compound administration).
- the active ingredient (I) and the compound (I) of the present invention exhibited a prolonged latency (seconds) of about 2 to 6 seconds and had a good analgesic action.
- the active ingredient (I) and the compound (I) of the present invention have a strong sodium channel inhibitory action, and are strongly analgesic in a streptozotocin-induced diabetic neuropathy model. The effect was shown.
- a typical compound for detecting a side effect is that a representative compound has a property that it is difficult to cause a side effect even when administered at a high dose compared with the dose required to develop an analgesic effect. It was confirmed by the rotarod test frequently used as a law. Evaluation by Christensen et al. (Pain 93, 1 47-153, 2001). Male SD rats were used for the experiments.
- each trial the animal was placed on a rotarod device that accelerated at a constant rate of 4 rpm to 40 rpm in 5 minutes, and the time until it dropped (retention time: seconds) was measured.
- each animal was first weighed and three pre-drug trials were performed. During the three trials, animals that showed a retention time of 90 seconds or longer were selected for evaluation of drug action. The selected animals were divided into groups so that the difference in the average retention time before drug administration was as small as possible between the groups.
- the drug was administered orally with 5 ml / kg of solvent. After the drug administration, two trials were carried out simultaneously with the anti-alodia effect measurement test in L5 / L6 spinal nerve ligated rats.
- Some of the compounds of the present invention are unlikely to cause side effects even when administered at a high dose compared to the effective dose in the anti-alodynic effect measurement test in L5 / L6 spinal nerve ligated rats. There was a compound having.
- neuropathic pain is a marked decrease in the response threshold (alodinia) to tactile stimuli.
- the anti-oral dinergic effect of neuropathic pain of representative compounds among the compounds of the present invention was confirmed by evaluation of analgesic action in L5ZL6 spinal nerve ligated rats. The evaluation was performed by partially modifying the method of Kim and Chung (Pain 50, 355-363, 1992). Under pentobarbital anesthesia, surgery was performed to ligate the left L5 and L6 lumbar nerves of male 5 or 6 week old SD rats with silk thread. Von Freyhair test was adopted as the method for evaluating analgesic action.
- the response threshold (log gmm) for mechanical stimulation. It was confirmed by preliminary studies that the reaction threshold of the animal's ligation foot was markedly reduced between the 7th day and the 14th day after surgery (in the state of alodya). The anti-allody effect was evaluated on any day between 7 and 14 days after surgery. Test compound On the day before product evaluation, the reaction threshold before administration of the test compound was measured. The animals were divided into 45 and 5 groups so as to reduce the difference in the mean value of the threshold values before the test compound administration and the variation within the groups. In the test compound evaluation test, the reaction threshold was measured after test compound administration.
- Test compounds were administered orally 30 minutes prior to reaction threshold measurements.
- the efficacy of the anti-alodynic action of the test compound is expressed as an ED value calculated by defining the threshold values for the surgical and non-operative foot in the solvent administration group as 0% and 100%, respectively.
- the ED value was about 70mgZkg.
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Abstract
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2010059390A1 (en) * | 2008-10-30 | 2010-05-27 | Janssen Pharmaceutica Nv | Modulators of serotonin receptor |
US8642583B2 (en) | 2008-10-30 | 2014-02-04 | Janssen Pharmaceutica Nv | Serotonin receptor modulators |
US8765788B2 (en) * | 2007-06-14 | 2014-07-01 | Amgen Inc. | Tricyclic inhibitors of hydroxysteroid dehydrogenases |
CN107074831A (zh) * | 2014-08-25 | 2017-08-18 | 王炳辉 | Mapk抑制剂 |
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WO2003084948A1 (fr) * | 2002-03-14 | 2003-10-16 | Eisai Co., Ltd. | Compose heterocyclique azote et medicament renfermant ce compose |
JP2004517121A (ja) * | 2000-12-28 | 2004-06-10 | ソシエテ・ド・コンセイユ・ド・ルシエルシエ・エ・ダアツプリカーション・シヤンテイフイツク・(エス.セー.エール.アー.エス) | 2−ピペリジルイミダゾール類から誘導されるナトリウムチャネルモジュレーター |
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Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8765788B2 (en) * | 2007-06-14 | 2014-07-01 | Amgen Inc. | Tricyclic inhibitors of hydroxysteroid dehydrogenases |
WO2010059390A1 (en) * | 2008-10-30 | 2010-05-27 | Janssen Pharmaceutica Nv | Modulators of serotonin receptor |
US8575364B2 (en) | 2008-10-30 | 2013-11-05 | Janssen Pharmaceutica Nv | Modulators of serotonin receptor |
US8642583B2 (en) | 2008-10-30 | 2014-02-04 | Janssen Pharmaceutica Nv | Serotonin receptor modulators |
US8957059B2 (en) | 2008-10-30 | 2015-02-17 | Janssen Pharmaceutica Nv | Modulators of serotonin receptors |
US9981909B2 (en) | 2008-10-30 | 2018-05-29 | Janssen Pharmaceutica Nv | Serotonin receptor modulators |
CN107074831A (zh) * | 2014-08-25 | 2017-08-18 | 王炳辉 | Mapk抑制剂 |
EP3186245A4 (en) * | 2014-08-25 | 2018-01-10 | EverBrilliant Pharma Pty Ltd | Mapk inhibitors |
CN107074831B (zh) * | 2014-08-25 | 2020-12-08 | 永辉药业 | Mapk抑制剂 |
US11273153B2 (en) | 2014-08-25 | 2022-03-15 | EverBrilliant Pharma Pty Ltd | MAPK inhibitors |
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JP2008001596A (ja) | 2008-01-10 |
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