CH220973A - Process for the preparation of a basic ester. - Google Patents
Process for the preparation of a basic ester.Info
- Publication number
- CH220973A CH220973A CH220973DA CH220973A CH 220973 A CH220973 A CH 220973A CH 220973D A CH220973D A CH 220973DA CH 220973 A CH220973 A CH 220973A
- Authority
- CH
- Switzerland
- Prior art keywords
- tropine
- ester
- acetic acid
- phenyl
- act
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D451/00—Heterocyclic compounds containing 8-azabicyclo [3.2.1] octane, 9-azabicyclo [3.3.1] nonane, or 3-oxa-9-azatricyclo [3.3.1.0<2,4>] nonane ring systems, e.g. tropane or granatane alkaloids, scopolamine; Cyclic acetals thereof
- C07D451/02—Heterocyclic compounds containing 8-azabicyclo [3.2.1] octane, 9-azabicyclo [3.3.1] nonane, or 3-oxa-9-azatricyclo [3.3.1.0<2,4>] nonane ring systems, e.g. tropane or granatane alkaloids, scopolamine; Cyclic acetals thereof containing not further condensed 8-azabicyclo [3.2.1] octane or 3-oxa-9-azatricyclo [3.3.1.0<2,4>] nonane ring systems, e.g. tropane; Cyclic acetals thereof
- C07D451/04—Heterocyclic compounds containing 8-azabicyclo [3.2.1] octane, 9-azabicyclo [3.3.1] nonane, or 3-oxa-9-azatricyclo [3.3.1.0<2,4>] nonane ring systems, e.g. tropane or granatane alkaloids, scopolamine; Cyclic acetals thereof containing not further condensed 8-azabicyclo [3.2.1] octane or 3-oxa-9-azatricyclo [3.3.1.0<2,4>] nonane ring systems, e.g. tropane; Cyclic acetals thereof with hetero atoms directly attached in position 3 of the 8-azabicyclo [3.2.1] octane or in position 7 of the 3-oxa-9-azatricyclo [3.3.1.0<2,4>] nonane ring system
- C07D451/06—Oxygen atoms
- C07D451/10—Oxygen atoms acylated by aliphatic or araliphatic carboxylic acids, e.g. atropine, scopolamine
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
Description
Verfahren zur Darstellung eines basischen Esters. Es wurde gefunden, dass man zu einem basischen Ester gelangen kann, wenn man auf eine Verbindung der Formel:
EMI0001.0001
worin X einen bei der Reaktion .sich abspal tenden Rest bedeutet, einen reaktionsfähigen Ester des Tropins einwirken lässt.
Der so erhaltene Phenyl-cyclohegyl-essig- säure-tropinester bildet ein Cl vom Kp o,,, 186 . Sein Hydrochlorid schmilzt bei 231 bis 232 .
Die neue Verbindung soll therapeutische Verwendung finden.
Beispiel: 22 Teile Phenyl-cyclohegyl-essigsäure, 20 Teile Chlortropin-hydrochlorid und 35 Teile Kaliumkarbonat werden in 300 Teilen Aceton 24 Stunden auf dem Wasserbade erwärmt. Hierauf wird abfiltriert, die Lösung ein gedampft und der Eindampfrückstand in Äther gelöst. Die ätherische Lösung wird mit Wasser gewaschen, über Kaliumkarbonat ge trocknet und verdampft.
Durch Destillation des Rückstandes gewinnt man den Phenyl- cyclohegyl-essigsäure-tropinester vom Kp o,@s 186 in nahezu quantitativer Ausbeute.
An Stelle von Aceton kann auch ein anderes indifferentes Lösungsmittel verwen det werden.
Dieselbe Verbindung kann auch gewonnen werden, wenn man z. B. an Stelle von Kaliumkarbonat ein anderes Alkalikarbonat verwendet, oder wenn man ein fertiges Al- kali- oder anderes der Phenyl- cyclohegyl-essigsäure mit Chlortropin um setzt.
Denselben Endstoff erhält man ferner z. B. auch durch Umsetzung von Phenyl- cyclohegyl-essigsäure mit Chlortropin in Ge- genwart eines indifferenten Lösungsmittels wie z. B. Isopropylalkohol.
Statt des Salzsäureesters können auch Ester des Tropins mit andern Ilalogenwa.sser- stoffsäuren oder z. B. mit Arylsulfonsäuren, wie Toluolsulfonsäure, verwendet werden.
Process for the preparation of a basic ester. It has been found that a basic ester can be obtained by using a compound of the formula:
EMI0001.0001
where X signifies a residue that splits off during the reaction, allows a reactive ester of tropine to act.
The phenyl-cyclohegyl-acetic acid-tropine ester thus obtained forms a Cl of bp o ,,, 186. Its hydrochloride melts at 231-232.
The new compound should find therapeutic use.
Example: 22 parts of phenyl-cyclohegyl-acetic acid, 20 parts of chlorotropine hydrochloride and 35 parts of potassium carbonate are heated in 300 parts of acetone on a water bath for 24 hours. It is then filtered off, the solution is evaporated and the evaporation residue is dissolved in ether. The ethereal solution is washed with water, dried over potassium carbonate and evaporated.
The phenylcyclohegyl-acetic acid tropine ester of boiling point 186 is obtained in almost quantitative yield by distilling the residue.
Instead of acetone, another inert solvent can also be used.
The same connection can also be obtained by z. B. used instead of potassium carbonate, another alkali metal carbonate, or if you put a finished alkali or other phenyl-cyclohegyl-acetic acid with chlorotropine.
The same end product is also obtained, for. B. also by reacting phenyl-cyclohegyl-acetic acid with chlorotropine in the presence of an inert solvent such. B. isopropyl alcohol.
Instead of the hydrochloric acid ester, esters of tropine with other Ilalogenwa.sser- stoffsäuren or z. B. with arylsulfonic acids such as toluenesulfonic acid.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH532943X | 1938-08-05 | ||
CH220973T | 1938-08-05 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH220973A true CH220973A (en) | 1942-04-30 |
Family
ID=25726510
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH220973D CH220973A (en) | 1938-08-05 | 1938-08-05 | Process for the preparation of a basic ester. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH220973A (en) |
-
1938
- 1938-08-05 CH CH220973D patent/CH220973A/en unknown
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