CH174281A - Process for the preparation of acetyltropic acid-2,2-dimethyl-3-piperidyl-propanol ester. - Google Patents
Process for the preparation of acetyltropic acid-2,2-dimethyl-3-piperidyl-propanol ester.Info
- Publication number
- CH174281A CH174281A CH174281DA CH174281A CH 174281 A CH174281 A CH 174281A CH 174281D A CH174281D A CH 174281DA CH 174281 A CH174281 A CH 174281A
- Authority
- CH
- Switzerland
- Prior art keywords
- piperidyl
- dimethyl
- preparation
- ester
- acid
- Prior art date
Links
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
Description
Verfahren zur Darstellung von Acetyltropasäure-2,2-dimethyl-3-piperidyl-propanolester. Die Ester von Aminoalkoholen der all gemeinen Formel
EMI0001.0003
wobei R ein Alkyl und R' ein Alkyl oder Wasserstoff bedeutet, mit aromatischen Säuren sind sehr stark wirksame Lokalanästhetica.
Es wurde nun gefunden, dass in den fett aromatischen Estern dieser Aminoalkohole die lokalanästhetische Wirkung fast völlig zurücktritt, dass ihnen aber statt dessen eine ausserordentlich starke krampflösendeWirkung zukommt, die bei einzelnen Gliedern die Wirkung des Papaverins erheblich übertrifft.
Die als Ausgangsstoffe dienenden Amino- alkohole können aus den nach den Verfahren der Patentschriften Nr. 147156, 151127 bis 151130, 151134 und 151135 erhaltenen Aminoaldehyden durch Reduktion mit Na triumamalgam in schwach essigsaurer Lösung gewonnen werden.
Gegenstand der vorliegenden Erfindung ist ein Verfahren zur Darstellung von Acetyl- tropasäur, e-2, 2-dimethyl-3-piperi dyl- propanol- ester, welches dadurch gekennzeichnet ist, dass man auf 2,2-Dimethyl-3-piperidyl-pro- panol eine VerbindunLy der Formel
EMI0001.0023
einwirken lässt. R bedeutet einen bei der Reaktion sichabspaltendenRest,wieHydrogyl, Halogen oder Ogalkyl.
Der Acetyltropasäure-2,2-dimetbyl-3-pi- peridyl-propanolester bildet ein hellgelbes Öl von alkalischer Reaktion. Seine Salze mit Mineralsäuren sind leicht löslich in Wasser. Der Ester soll als Arzneimittel Verwendung finden.
<I>Beispiel:</I> 49 Teile Acetyltropasäurechlorid werden in 110 Teilen Chloroform gelöst und ein Gemisch von 39 Teilen 2,2-Dimethyl-3- piperidyl-propylalkohol und 60 Teilen Chloro form unter Wasserkühlung zugetropft. Man erwärmt noch 3 Stunden auf 50 o und schüt telt die gelbe homogene Lösung dreimal mit je 100 Teilen Wasser aus. Die wässerige Lösung wird mit Äther extrahiert und vom gelösten Äther durch Absaugen befreit. Man gibt so lange eine etwa 50 o/oige Lösung von Kaliumjodid in Wasser zu, als sich noch Öl ausscheidet.
Das Öl wird vom Wasser ge trennt, mit wenig Wasser gewaschen und in wässeriger Aufschlämmung mit Natrium- carbonatlösung bis zur alkalischen Reaktion versetzt. Die in Freiheit gesetzte Base wird in Äther aufgenommen. Durch Verdampfen des Äthers erhält man das Reaktionsprodukt als hellgelbes Öl von alkalischer Reaktion.
Process for the preparation of acetyltropic acid-2,2-dimethyl-3-piperidyl-propanol ester. The esters of amino alcohols of the general formula
EMI0001.0003
where R is alkyl and R 'is alkyl or hydrogen, with aromatic acids are very effective local anesthetics.
It has now been found that in the fatty aromatic esters of these amino alcohols the local anesthetic effect disappears almost completely, but that instead they have an extraordinarily strong antispasmodic effect which considerably exceeds the effect of papaverine in individual limbs.
The amino alcohols used as starting materials can be obtained from the amino aldehydes obtained by the process of patents Nos. 147156, 151127 to 151130, 151134 and 151135 by reduction with sodium amalgam in a weakly acetic acid solution.
The present invention is a process for the preparation of acetyl tropic acid, e-2, 2-dimethyl-3-piperidyl propanol ester, which is characterized in that one on 2,2-dimethyl-3-piperidyl-pro - panol a compound of the formula
EMI0001.0023
can act. R denotes a radical which is split off during the reaction, such as hydroyl, halogen or Ogalkyl.
The acetyl tropic acid 2,2-dimethyl-3-piperidyl-propanol ester forms a light yellow oil with an alkaline reaction. Its salts with mineral acids are easily soluble in water. The ester is said to be used as a drug.
<I> Example: </I> 49 parts of acetyltropic acid chloride are dissolved in 110 parts of chloroform and a mixture of 39 parts of 2,2-dimethyl-3-piperidylpropyl alcohol and 60 parts of chloroform are added dropwise with water cooling. The mixture is heated to 50 o for a further 3 hours and the yellow homogeneous solution is extracted three times with 100 parts of water each time. The aqueous solution is extracted with ether and freed from the dissolved ether by suction. An approximately 50% solution of potassium iodide in water is added as long as oil still separates.
The oil is separated from the water, washed with a little water and, in an aqueous suspension, mixed with sodium carbonate solution until an alkaline reaction is achieved. The base that has been set free is taken up in ether. Evaporation of the ether gives the reaction product as a light yellow oil from an alkaline reaction.
Claims (1)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE139454X | 1932-03-22 | ||
CH168876T | 1933-02-16 | ||
DEH136773D DE594085C (en) | 1932-03-22 | 1933-07-07 | Process for the production of basic esters of fatty acids |
Publications (1)
Publication Number | Publication Date |
---|---|
CH174281A true CH174281A (en) | 1934-12-31 |
Family
ID=34068601
Family Applications (8)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH168876D CH168876A (en) | 1932-03-22 | 1933-02-16 | Process for the preparation of tropic acid-2.2-dimethyl-3-diethylaminopropanol ester. |
CH174279D CH174279A (en) | 1932-03-22 | 1933-02-16 | Process for the preparation of phenylbromoallylacetic acid 2,2-dimethyl-3-diethylaminopropanol ester. |
CH174281D CH174281A (en) | 1932-03-22 | 1933-02-16 | Process for the preparation of acetyltropic acid-2,2-dimethyl-3-piperidyl-propanol ester. |
CH174280D CH174280A (en) | 1932-03-22 | 1933-02-16 | Method for the preparation of rac. Acetylmandelic acid 2,2-dimethyl-3-dimethylaminopropanol ester. |
CH174913D CH174913A (en) | 1932-03-22 | 1933-02-16 | Process for the preparation of acetyltropic acid-2,2-dimethyl-3-diethylaminopropanol ester. |
CH174282D CH174282A (en) | 1932-03-22 | 1933-02-16 | Process for the preparation of benzilic acid-2,2-dimethyl-3-diethylaminopropanol ester. |
CH174278D CH174278A (en) | 1932-03-22 | 1933-02-16 | Process for the preparation of a-phenylbutyric acid-2.2-dimethyl-3-diethylaminopropanol ester. |
CH174912D CH174912A (en) | 1932-03-22 | 1934-02-06 | Process for the preparation of 1-acetyltropic acid-2,2-dimethyl-3-diethylaminopropanol ester. |
Family Applications Before (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH168876D CH168876A (en) | 1932-03-22 | 1933-02-16 | Process for the preparation of tropic acid-2.2-dimethyl-3-diethylaminopropanol ester. |
CH174279D CH174279A (en) | 1932-03-22 | 1933-02-16 | Process for the preparation of phenylbromoallylacetic acid 2,2-dimethyl-3-diethylaminopropanol ester. |
Family Applications After (5)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH174280D CH174280A (en) | 1932-03-22 | 1933-02-16 | Method for the preparation of rac. Acetylmandelic acid 2,2-dimethyl-3-dimethylaminopropanol ester. |
CH174913D CH174913A (en) | 1932-03-22 | 1933-02-16 | Process for the preparation of acetyltropic acid-2,2-dimethyl-3-diethylaminopropanol ester. |
CH174282D CH174282A (en) | 1932-03-22 | 1933-02-16 | Process for the preparation of benzilic acid-2,2-dimethyl-3-diethylaminopropanol ester. |
CH174278D CH174278A (en) | 1932-03-22 | 1933-02-16 | Process for the preparation of a-phenylbutyric acid-2.2-dimethyl-3-diethylaminopropanol ester. |
CH174912D CH174912A (en) | 1932-03-22 | 1934-02-06 | Process for the preparation of 1-acetyltropic acid-2,2-dimethyl-3-diethylaminopropanol ester. |
Country Status (1)
Country | Link |
---|---|
CH (8) | CH168876A (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3103308A1 (en) * | 1981-01-31 | 1982-08-26 | Dynamit Nobel Ag, 5210 Troisdorf | METHOD FOR PRODUCING (ALPHA) -HYDROXIMETHYLENARYL VESSEL ESTERS |
-
1933
- 1933-02-16 CH CH168876D patent/CH168876A/en unknown
- 1933-02-16 CH CH174279D patent/CH174279A/en unknown
- 1933-02-16 CH CH174281D patent/CH174281A/en unknown
- 1933-02-16 CH CH174280D patent/CH174280A/en unknown
- 1933-02-16 CH CH174913D patent/CH174913A/en unknown
- 1933-02-16 CH CH174282D patent/CH174282A/en unknown
- 1933-02-16 CH CH174278D patent/CH174278A/en unknown
-
1934
- 1934-02-06 CH CH174912D patent/CH174912A/en unknown
Also Published As
Publication number | Publication date |
---|---|
CH174282A (en) | 1934-12-31 |
CH168876A (en) | 1934-04-30 |
CH174279A (en) | 1934-12-31 |
CH174913A (en) | 1935-01-31 |
CH174280A (en) | 1934-12-31 |
CH174912A (en) | 1935-01-31 |
CH174278A (en) | 1934-12-31 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
AT139454B (en) | Process for the preparation of alkamine esters. | |
CH395967A (en) | Process for the preparation of racemic and optically active 2,3-dimercaptosuccinic acid | |
CH174281A (en) | Process for the preparation of acetyltropic acid-2,2-dimethyl-3-piperidyl-propanol ester. | |
DE586247C (en) | Process for the production of basic esters of fatty acids | |
DE958844C (en) | Process for the production of ª † -acyl-butyric acids | |
DE603624C (en) | Process for the preparation of alkamine esters | |
CH179697A (en) | Process for the preparation of 1-tropic acid-2,2-dimethyl-3-dimethylaminopropanol ester. | |
DE591677C (en) | Process for the production of basic esters of fatty acids | |
AT165327B (en) | Process for the preparation of pantothenic acid | |
AT159954B (en) | Process for the preparation of aminobenzenesulfonic acid amide compounds. | |
DE720468C (en) | Process for the preparation of esters of ª ‡, ª ‡ -substituted 4, 4'-dioxy compounds of the stilbene series | |
AT222815B (en) | Process for the production of new tropic acid esters | |
DE1493912C (en) | 2- (Naphthyl-1) -3-furyl- or -3-tetrahydrofuryl-propionic acid and their sodium salts and processes for their preparation | |
DE1493933C (en) | 2 Furfuryl 3 (naphthyl 1) propionic acid and its sodium salt and process for their preparation excretion from 1493912 | |
DE613403C (en) | Process for the preparation of barbituric acids substituted on carbon and nitrogen | |
AT120407B (en) | Process for the preparation of esters of derivatives of 4-oxypiperidine. | |
AT256074B (en) | Process for the preparation of new chloramphenicol analogue derivatives | |
AT254876B (en) | Process for the preparation of the new ethyl or methyl ester of 6,7-diisobutoxy-4-hydroxy-3-quinolinecarboxylic acid | |
AT204045B (en) | Process for the production of new piperazine derivatives and their salts | |
CH269986A (en) | Process for the preparation of a derivative of 3,5-dioxo-pyrazolidine. | |
CH263037A (en) | Process for the preparation of a new derivative of 2-oxy-5-aminobenzoic acid. | |
CH121259A (en) | Process for the preparation of an acyl compound of amino-3-chloro-4-oxybenzene-1-arsic acid. | |
CH236169A (en) | Process for the preparation of a new ester. | |
CH190546A (en) | Process for the preparation of 5-benzoylamino-m-phenanthroline. | |
CH234450A (en) | Process for the preparation of a p-nitrobenzoic acid ester. |