CH564556A5 - Antihypertensive substd ergoline derivs - prepd converting an acid azide to the isocyanate and reacting with amine - Google Patents
Antihypertensive substd ergoline derivs - prepd converting an acid azide to the isocyanate and reacting with amineInfo
- Publication number
- CH564556A5 CH564556A5 CH1826271A CH1826271A CH564556A5 CH 564556 A5 CH564556 A5 CH 564556A5 CH 1826271 A CH1826271 A CH 1826271A CH 1826271 A CH1826271 A CH 1826271A CH 564556 A5 CH564556 A5 CH 564556A5
- Authority
- CH
- Switzerland
- Prior art keywords
- formula
- methyl
- reacting
- acid
- isocyanate
- Prior art date
Links
- 239000002253 acid Substances 0.000 title claims description 16
- 150000001540 azides Chemical class 0.000 title claims description 8
- 239000012948 isocyanate Substances 0.000 title claims description 3
- 150000002513 isocyanates Chemical class 0.000 title claims description 3
- 230000003276 anti-hypertensive effect Effects 0.000 title abstract description 3
- 150000001412 amines Chemical class 0.000 title abstract 2
- AWFDCTXCTHGORH-HGHGUNKESA-N 6-[4-[(6ar,9r,10ar)-5-bromo-7-methyl-6,6a,8,9,10,10a-hexahydro-4h-indolo[4,3-fg]quinoline-9-carbonyl]piperazin-1-yl]-1-methylpyridin-2-one Chemical compound O=C([C@H]1CN([C@H]2[C@@H](C=3C=CC=C4NC(Br)=C(C=34)C2)C1)C)N(CC1)CCN1C1=CC=CC(=O)N1C AWFDCTXCTHGORH-HGHGUNKESA-N 0.000 title 1
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 claims abstract description 18
- 150000003839 salts Chemical class 0.000 claims abstract description 10
- 125000000217 alkyl group Chemical group 0.000 claims abstract description 5
- 239000000010 aprotic solvent Substances 0.000 claims abstract description 5
- 150000001875 compounds Chemical class 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 9
- 125000004432 carbon atom Chemical group C* 0.000 claims description 7
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 claims description 6
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 239000012458 free base Substances 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 3
- 125000002947 alkylene group Chemical group 0.000 claims description 2
- 238000009835 boiling Methods 0.000 claims description 2
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims description 2
- 125000004108 n-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 claims description 2
- 230000008707 rearrangement Effects 0.000 claims description 2
- HPNMFZURTQLUMO-UHFFFAOYSA-N diethylamine Chemical compound CCNCC HPNMFZURTQLUMO-UHFFFAOYSA-N 0.000 abstract description 2
- 150000001735 carboxylic acids Chemical class 0.000 abstract 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 abstract 1
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 description 9
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 9
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 9
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 6
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 6
- CTSLXHKWHWQRSH-UHFFFAOYSA-N oxalyl chloride Chemical compound ClC(=O)C(Cl)=O CTSLXHKWHWQRSH-UHFFFAOYSA-N 0.000 description 4
- -1 ureidomethyl Chemical group 0.000 description 4
- RWRDLPDLKQPQOW-UHFFFAOYSA-N Pyrrolidine Chemical compound C1CCNC1 RWRDLPDLKQPQOW-UHFFFAOYSA-N 0.000 description 3
- 239000002585 base Substances 0.000 description 3
- 238000000354 decomposition reaction Methods 0.000 description 3
- 239000003814 drug Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- PXIPVTKHYLBLMZ-UHFFFAOYSA-N Sodium azide Chemical compound [Na+].[N-]=[N+]=[N-] PXIPVTKHYLBLMZ-UHFFFAOYSA-N 0.000 description 2
- LIWAQLJGPBVORC-UHFFFAOYSA-N ethylmethylamine Chemical compound CCNC LIWAQLJGPBVORC-UHFFFAOYSA-N 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- XHXFXVLFKHQFAL-UHFFFAOYSA-N phosphoryl trichloride Chemical compound ClP(Cl)(Cl)=O XHXFXVLFKHQFAL-UHFFFAOYSA-N 0.000 description 2
- 238000010992 reflux Methods 0.000 description 2
- 239000007858 starting material Substances 0.000 description 2
- FYSNRJHAOHDILO-UHFFFAOYSA-N thionyl chloride Chemical compound ClS(Cl)=O FYSNRJHAOHDILO-UHFFFAOYSA-N 0.000 description 2
- 206010020772 Hypertension Diseases 0.000 description 1
- FXHOOIRPVKKKFG-UHFFFAOYSA-N N,N-Dimethylacetamide Chemical compound CN(C)C(C)=O FXHOOIRPVKKKFG-UHFFFAOYSA-N 0.000 description 1
- YGYAWVDWMABLBF-UHFFFAOYSA-N Phosgene Chemical compound ClC(Cl)=O YGYAWVDWMABLBF-UHFFFAOYSA-N 0.000 description 1
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical class [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 1
- QTBSBXVTEAMEQO-UHFFFAOYSA-N acetic acid Substances CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 1
- 239000002671 adjuvant Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 150000001408 amides Chemical class 0.000 description 1
- 230000036772 blood pressure Effects 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 150000007522 mineralic acids Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- 235000005985 organic acids Nutrition 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 238000007911 parenteral administration Methods 0.000 description 1
- 230000000144 pharmacologic effect Effects 0.000 description 1
- UXCDUFKZSUBXGM-UHFFFAOYSA-N phosphoric tribromide Chemical compound BrP(Br)(Br)=O UXCDUFKZSUBXGM-UHFFFAOYSA-N 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000011541 reaction mixture Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000011877 solvent mixture Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000012730 sustained-release form Substances 0.000 description 1
- 238000010626 work up procedure Methods 0.000 description 1
Landscapes
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Nitrogen Condensed Heterocyclic Rings (AREA)
Abstract
Cpds. of gen. formula (I): where R1 and R2 = H and/or alkyl (1-4C) or form together and alkylene-chain (=5C) and as their acid-addition salts are prepd. by reacting a cpd. (II) in aprotic solvent with an amine (III) HNR1R2 or by reacting a cpd. (IV) with a reactive carboxylic acid deriv pref. of formula (VIa): Cl-CO-NR1R2 (VIa). Cpds. (I) have anti-hypertensive activity and may be used against hypertonic disorders. In an example 6-methyl-9-ergolene 8 beta-acetic-acid azide is refluxed in CHCl3 and diethylamine is added to give 6-methyl 8 beta-(3-dimethylureidomethyl)ergolene.
Description
Die vorliegende Erfindung betrifft ein Verfahren zur Herstellung von 6-Methyl-8ss-(ureidomethyl)ergolen-Derivate der Formel I, worin Rl eine Alkylgruppe mit 24 Kohlenstoffatomen und R2 eine Alkylgruppe mit 14 Kohlenstoffatomen bedeuten oder Rl und R2 zusammen eine Alkylenkette mit maximal 5 Kohlenstoffatomen bilden, wobei, falls R2 Methyl bedeutet, Rl nicht für n-Butyl steht, und ihrer Säureadditionssalze.
Erfindungsgemäss gelangt man zu den Verbindungen der Formel I und ihren Säureadditionssalzen, indem man das Säureazid der Formel II in einem aprotischen Lösungsmittel nach Umlagerung in das Isocyanat mit einer Verbindung der Formel III, worin Rl und R2 obige Bedeutung haben, umsetzt und die so erhaltenen Verbindungen der Formel I als freie Base oder als Säureadditionssalze gewinnt.
Als aprotische Lösungsmittel können beispielsweise Benzol, Chloroform oder Toluol verwendet werden, die Reaktion erfolgt in einem Temperaturbereich von 50-80 , zweckmässig arbeitet man in Chloroform bei dessen Siedetemperatur. Auf 1 Mol der Verbindung der Formel II werden etwa 2 Mol einer Verbindung der Formel III eingesetzt.
Eine vorzugsweise Ausführungsform des erfindungsgemässen Verfahrens besteht darin, dass man das Säureazid der Formel II in Chloroform löst, Die Lösung wird 15 Min. am Rückfluss gekocht, mit einer Verbindung der Formel III versetzt und noch ca. 30 Min. auf Rückflusstemperatur gehalten.
Durch übliche Aufarbeitung des Reaktionsgemisches werden die Verbindungen der allgemeinen Formel I isoliert, gegebenenfalls in Form ihrer Salze.
Das Säureazid der Formel II kann nach dem folgenden Verfahren hergestellt werden:
Ein reaktionsfähiges funktionelles Derivat der Säure der Formel IV wird in einem unter den Reaktionsbedingungen inerten organischen Lösungsmittel resp. Lösungsmittelgemisch mit einem Alkaliazid in das Säureazid der Formel II übergeführt.
Vorzugsweise verwendet man das bei der Umsetzung der Säure der Formel IV mit einem Chlorierungs- oder Bromie rungsmittel, wie beispielsweise Thionylchlorid, Phosgen, Phosphoroxychlorid, Phosphoroxybromid oder Oxalylchlorid, und einem N-di (nieder) alkylsubstituierten Säureamid einer aliphatischen Monocarbonsäure mit 1-3 Kohlenstoffatomen, wie Dimethylformamid oder Dimethylacetamid, entstehende Reaktionsprodukt als reaktionsfähiges Derivat der Säure der Formel IV.
Die erfindungsgemäss hergestellten Verbindungen der Formel I sind bei Raumtemperatur kristalline Verbindungen, die mit anorganischen oder organischen Säuren beständige, bei Raumtemperatur kristallisierte Salze bilden.
Der Umfang der vorliegenden Erfindung wurde mit Hilfe eines Disclaimers gegenüber dem des Patentes Nr. 551 975 abgegrenzt.
Die Verbindungen der Formel I, insbesondere 6-Methyl-8ss- (3-dimethylureidomethyl)ergolen, zeichnen sich durch interessante pharmakologische Eigenschaften aus und können deshalb als Heilmittel Verwendung finden. Sie zeichnen sich durch ausgeprägte antihypertensive Wirkung aus, wie durch Blutdrucksenkung an der wachen hypertonen Grollmann Ratte sowie am wachen hypertonen Goldblatthund mit Dosen von 0,05-0,5 mg pro kg festgestellt werden konnte. Ihre Anwendung bei Hypertonien jeglicher Genese ist dadurch angezeigt.
Die Tagesdosis liegt bei etwa 1 bis 200 mg; diese Dosis kann nötigenfalls in 2-3 Anteilen oder auch als Retardform verabreicht werden. Für orale Applikationen enthalten die Teildosen etwa 2-25 mg einer Verbindung der Formel I neben festen oder flüssigen Trägersubstanzen.
Die neuen Verbindungen der Formel I bzw. ihre pharmakologisch verträglichen Säureadditionssalze können als Arzneimittel allein oder in entsprechenden Arzneiformen mit pharmakologisch indifferenten Hilfsstoffen für orale, enterale oder parenterale Verabreichung verwendet werden.
In den nachfolgenden Beispielen, welche die Erfindung näher erläutern, ihren Umfang aber in keiner Weise einschränken sollen, erfolgen alle Temperaturangaben in Celsiusgraden und sind nicht korrigiert. Soweit die Herstellung der Ausgangsverbindungen nicht beschrieben wird, sind diese bekannt oder nach an sich bekannten Verfahren oder analog zu an sich bekannten Verfahren herstellbar. Aus der freien Base lassen sich in bekannter Weise Säureadditionssalze gewinnen und umgekehrt.
EMI1.1
Beispiel 1 6-Methyl-8ss-(3-methyl-3-äthyl- ureidomethyl)-ergolen
18,7 g (60,9 mMol) 6-Methyl-9-ergolen-8ss-essigsäureazid werden in 200 ml abs. Chloroform gelöst und während 15 Minuten verkocht. Nach Zugabe von 7,1 g (120 mMol) Methyläthylamin wird noch 35 Minuten rückflussiert. Die flüchtigen Bestandteile werden am Wasserstrahlvakuum entfernt und die erhaltene Rohbase aus Isopropanol kristallisiert, Smp. 98-99 (Zersetzung).
[a]20 = + 57,9O (c = 1,061 in Methanol).
Beispiel 2 6-Methyl-8ss-(3-diäthyl-ureidomethyl)ergolen
15 g (48,9 mMol) 6-Methyl-9-ergolen-8ss-essigsäureazid in 200 ml abs. Chloroform gelöst, werden mit 10 ml (97,8 mMol) Diäthylamin wie in Beispiel 1 beschrieben umgesetzt und aufgearbeitet. Die Rohbase kristallisiert aus Isopropanol.
Smp. 104-105 (Zersetzung).
[a]2DO = +59,4"(c = 1,049 in Methanol).
Beispiel 3 6-Methyl-8ss-(1-pyrrolidino- carbamoylmethyl)ergolen
10,8 g (32,2 mMol) 6-Methyl-9-ergolen-8ss-essigsäureazid in 150 ml. abs. Chloroform gelöst, werden mit 5,96 ml (70,4 mMol) Pyrrolidin wie in Beispiel 1 beschrieben umgesetzt und aufgearbeitet. Kristallisation der Rohbase aus Isopropanol ergibt ein reines Produkt von Smp. 241-242 (Zersetzung).
[a]20 = + 59,50 (c = 1,154 in Methanol).
Das als Ausgangsmaterial verwendete 6-Methyl-9-ergolen 8ss-essigsäureazid kann wie folgt hergestellt werden:
Zu einem Gemisch von 160 ml Dimethylformamid und 80 ml Acetonitril werden bei - 150 13,6 ml (0,159 Mol) Oxalylchlorid gelöst in 20 ml Acetonitril zugetropft. Der gebildete Komplex wird noch 10 Min. bei -15' gerührt und dann mit 40 g (0,142 Mol) 6-Methyl-9-ergolen-8ss-essigsäure versetzt, die vorher in 250 ml Methylenchlorid und 40 ml Acetonitril aufgeschlämmt werden. Nach einer Stunde Rühren bei 0O wird eine Lösung von 35,2 g (0,54 Mol) Natriumazid gelöst in 144 ml Wasser zugegeben. Bei - 5oC wird während 5 Min.
turbulent gerührt und dann auf 2 1 Methylenchlorid gegossen.
Zu dieser Lösung gibt man 800 ml esättigte Natriumbicarbonatlösung und schüttelt gut durch. übliches Ausschütteln mit Methylenchlorid ergibt nach dessen Verdrängen am Wasser strahlvakuum bei 30O und Trocknen am Hochvakuum das gewünschte Azid als hellen Schaum.
The present invention relates to a process for the preparation of 6-methyl-8ss- (ureidomethyl) ergolen derivatives of the formula I, in which R1 is an alkyl group with 24 carbon atoms and R2 is an alkyl group with 14 carbon atoms, or R1 and R2 together represent an alkylene chain with a maximum of 5 Form carbon atoms, where, if R2 is methyl, Rl is not n-butyl, and their acid addition salts.
According to the invention, the compounds of the formula I and their acid addition salts are obtained by reacting the acid azide of the formula II in an aprotic solvent after rearrangement into the isocyanate with a compound of the formula III, in which R1 and R2 have the above meaning, and the compounds thus obtained of formula I wins as free base or as acid addition salts.
Benzene, chloroform or toluene, for example, can be used as aprotic solvents; the reaction takes place in a temperature range of 50-80; it is expedient to work in chloroform at its boiling point. About 2 moles of a compound of the formula III are used per mole of the compound of the formula II.
A preferred embodiment of the process according to the invention consists in dissolving the acid azide of the formula II in chloroform. The solution is refluxed for 15 minutes, mixed with a compound of the formula III and kept at reflux temperature for about 30 minutes.
The compounds of the general formula I are isolated by conventional work-up of the reaction mixture, if appropriate in the form of their salts.
The acid azide of formula II can be prepared by the following process:
A reactive functional derivative of the acid of the formula IV is in an inert organic solvent under the reaction conditions, respectively. Solvent mixture converted with an alkali azide into the acid azide of the formula II.
It is preferred to use that in the reaction of the acid of the formula IV with a chlorinating or brominating agent, such as, for example, thionyl chloride, phosgene, phosphorus oxychloride, phosphorus oxybromide or oxalyl chloride, and an N-di (lower) alkyl-substituted acid amide of an aliphatic monocarboxylic acid having 1-3 carbon atoms , such as dimethylformamide or dimethylacetamide, resulting reaction product as a reactive derivative of the acid of the formula IV.
The compounds of the formula I prepared according to the invention are compounds which are crystalline at room temperature and which form stable salts with inorganic or organic acids which crystallize at room temperature.
The scope of the present invention has been delimited from that of Patent No. 551,975 by means of a disclaimer.
The compounds of the formula I, in particular 6-methyl-8ss- (3-dimethylureidomethyl) ergolen, are distinguished by interesting pharmacological properties and can therefore be used as medicaments. They are characterized by a pronounced antihypertensive effect, as was shown by lowering blood pressure in the awake hypertonic Grollmann rat and in the awake hypertonic golden-leaved dog with doses of 0.05-0.5 mg per kg. Their use in hypertension of any origin is indicated.
The daily dose is around 1 to 200 mg; if necessary, this dose can be administered in 2-3 parts or as a sustained release form. For oral administration, the partial doses contain about 2-25 mg of a compound of the formula I in addition to solid or liquid carrier substances.
The new compounds of the formula I or their pharmacologically acceptable acid addition salts can be used as medicaments alone or in corresponding medicament forms with pharmacologically inert adjuvants for oral, enteral or parenteral administration.
In the following examples, which explain the invention in more detail but are not intended to restrict its scope in any way, all temperatures are given in degrees Celsius and are not corrected. If the preparation of the starting compounds is not described, these are known or can be prepared by processes known per se or analogously to processes known per se. Acid addition salts can be obtained from the free base in a known manner and vice versa.
EMI1.1
Example 1 6-methyl-8ss- (3-methyl-3-äthyl- ureidomethyl) -ergolen
18.7 g (60.9 mmol) of 6-methyl-9-ergolen-8ss-acetic acid azide are dissolved in 200 ml of abs. Dissolved chloroform and boiled for 15 minutes. After adding 7.1 g (120 mmol) of methylethylamine, reflux is continued for 35 minutes. The volatile constituents are removed in a water jet vacuum and the crude base obtained is crystallized from isopropanol, melting point 98-99 (decomposition).
[a] 20 = + 57.9O (c = 1.061 in methanol).
Example 2 6-Methyl-8ss- (3-diethyl-ureidomethyl) ergolen
15 g (48.9 mmol) 6-methyl-9-ergolen-8ss-acetic acid azide in 200 ml abs. Dissolved chloroform, are reacted with 10 ml (97.8 mmol) of diethylamine as described in Example 1 and worked up. The crude base crystallizes from isopropanol.
M.p. 104-105 (decomposition).
[a] 2DO = +59.4 "(c = 1.049 in methanol).
Example 3 6-methyl-8ss- (1-pyrrolidino-carbamoylmethyl) ergolen
10.8 g (32.2 mmol) 6-methyl-9-ergolen-8ss-acetic acid azide in 150 ml. Abs. Dissolved chloroform, are reacted with 5.96 ml (70.4 mmol) of pyrrolidine as described in Example 1 and worked up. Crystallization of the crude base from isopropanol gives a pure product of melting point 241-242 (decomposition).
[a] 20 = + 59.50 (c = 1.154 in methanol).
The 6-methyl-9-ergolenic 8ss-acetic acid azide used as the starting material can be produced as follows:
13.6 ml (0.159 mol) of oxalyl chloride dissolved in 20 ml of acetonitrile are added dropwise to a mixture of 160 ml of dimethylformamide and 80 ml of acetonitrile at - 150. The complex formed is stirred for a further 10 minutes at -15 'and then mixed with 40 g (0.142 mol) of 6-methyl-9-ergolen-8ss-acetic acid, which are previously suspended in 250 ml of methylene chloride and 40 ml of acetonitrile. After stirring at 0 ° for one hour, a solution of 35.2 g (0.54 mol) of sodium azide dissolved in 144 ml of water is added. At - 5oC, for 5 min.
stirred turbulent and then poured onto 2 l of methylene chloride.
800 ml of saturated sodium bicarbonate solution are added to this solution and shaken well. Conventional shaking with methylene chloride gives the desired azide as a pale foam after it has been displaced in the water jet vacuum at 30O and drying in a high vacuum.
Claims (1)
Priority Applications (18)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH1826271A CH564556A5 (en) | 1971-12-15 | 1971-12-15 | Antihypertensive substd ergoline derivs - prepd converting an acid azide to the isocyanate and reacting with amine |
DK233772AA DK140596B (en) | 1971-05-19 | 1972-05-10 | Analogous process for the preparation of 8beta- (ureidomethyl) -ergolene derivatives. |
SE7206169A SE393615B (en) | 1971-05-19 | 1972-05-10 | PROCEDURE FOR THE PREPARATION OF 6-METHYL-8 BETA-UREIDOMETHYL ERGOLENES |
NL7206459A NL7206459A (en) | 1971-05-19 | 1972-05-12 | |
FI721356A FI52726C (en) | 1971-05-19 | 1972-05-12 | Process for the production of new therapeutically useful ergolenders ivat. |
US00253105A US3821226A (en) | 1971-05-19 | 1972-05-15 | 6-methyl-8b-ureido-ergolenes |
GB2287472A GB1392551A (en) | 1971-05-19 | 1972-05-16 | Ergolene derivatives their preparation and use |
DE19722223681 DE2223681A1 (en) | 1971-05-19 | 1972-05-16 | New heterocyclic compounds and processes for their preparation |
IL39464A IL39464A (en) | 1971-05-19 | 1972-05-17 | 6-methyl-8beta-(ureidomethyl)ergolene derivatives and their preparation |
FR7217566A FR2137992B1 (en) | 1971-05-19 | 1972-05-17 | |
HUSA2358A HU164319B (en) | 1971-05-19 | 1972-05-17 | |
BE783625A BE783625A (en) | 1971-05-19 | 1972-05-17 | NEW ERGOLENE DERIVATIVES, THEIR PREPARATION AND THEIR APPLICATION AS MEDICINAL PRODUCTS |
DD163031A DD99373A5 (en) | 1971-05-19 | 1972-05-17 | |
ES402823A ES402823A1 (en) | 1971-05-19 | 1972-05-17 | Procedure for obtaining ergoline derivatives. (Machine-translation by Google Translate, not legally binding) |
BG020514A BG19158A3 (en) | 1971-05-19 | 1972-05-18 | METHOD OF OBTAINING HETEROCHEMICAL COMPOUNDS |
AT432972A AT328094B (en) | 1971-05-19 | 1972-05-18 | PROCESS FOR PRODUCING NEW ERGOLEN DERIVATIVES |
SU1787307A SU469251A3 (en) | 1971-05-19 | 1972-05-18 | The method of obtaining heterocyclic compounds |
FI770044A FI55844C (en) | 1971-05-19 | 1977-01-07 | FOERFARANDE FOER FRAMSTAELLNING AV NYA TERAPEUTISKT ANVAENDBARA ERGOLENDERIVAT |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH1826271A CH564556A5 (en) | 1971-12-15 | 1971-12-15 | Antihypertensive substd ergoline derivs - prepd converting an acid azide to the isocyanate and reacting with amine |
Publications (1)
Publication Number | Publication Date |
---|---|
CH564556A5 true CH564556A5 (en) | 1975-07-31 |
Family
ID=4431681
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH1826271A CH564556A5 (en) | 1971-05-19 | 1971-12-15 | Antihypertensive substd ergoline derivs - prepd converting an acid azide to the isocyanate and reacting with amine |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH564556A5 (en) |
-
1971
- 1971-12-15 CH CH1826271A patent/CH564556A5/en not_active IP Right Cessation
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