CH259253A - Process for preparing acetylcholine oleate. - Google Patents
Process for preparing acetylcholine oleate.Info
- Publication number
- CH259253A CH259253A CH259253DA CH259253A CH 259253 A CH259253 A CH 259253A CH 259253D A CH259253D A CH 259253DA CH 259253 A CH259253 A CH 259253A
- Authority
- CH
- Switzerland
- Prior art keywords
- oleate
- acetylcholine
- silver
- sub
- preparing
- Prior art date
Links
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid Chemical compound CCCCCCCC\C=C/CCCCCCCC(O)=O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 title claims description 16
- 229940049964 oleate Drugs 0.000 title claims description 15
- OIPILFWXSMYKGL-UHFFFAOYSA-N acetylcholine Chemical compound CC(=O)OCC[N+](C)(C)C OIPILFWXSMYKGL-UHFFFAOYSA-N 0.000 title claims description 12
- 229960004373 acetylcholine Drugs 0.000 title claims description 12
- 238000004519 manufacturing process Methods 0.000 title claims 2
- 238000000034 method Methods 0.000 claims description 10
- YRSQDSCQMOUOKO-KVVVOXFISA-M silver;(z)-octadec-9-enoate Chemical compound [Ag+].CCCCCCCC\C=C/CCCCCCCC([O-])=O YRSQDSCQMOUOKO-KVVVOXFISA-M 0.000 claims description 8
- 238000000354 decomposition reaction Methods 0.000 claims description 5
- 230000001476 alcoholic effect Effects 0.000 claims description 4
- 229910021607 Silver chloride Inorganic materials 0.000 claims description 3
- JUGOREOARAHOCO-UHFFFAOYSA-M acetylcholine chloride Chemical compound [Cl-].CC(=O)OCC[N+](C)(C)C JUGOREOARAHOCO-UHFFFAOYSA-M 0.000 claims description 3
- 229910052709 silver Inorganic materials 0.000 claims description 3
- 239000004332 silver Substances 0.000 claims description 3
- HKZLPVFGJNLROG-UHFFFAOYSA-M silver monochloride Chemical compound [Cl-].[Ag+] HKZLPVFGJNLROG-UHFFFAOYSA-M 0.000 claims description 3
- -1 silver halide Chemical class 0.000 claims description 2
- 238000006243 chemical reaction Methods 0.000 claims 1
- 238000001914 filtration Methods 0.000 claims 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 6
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 4
- 238000002360 preparation method Methods 0.000 description 4
- 239000000243 solution Substances 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 2
- 239000002674 ointment Substances 0.000 description 2
- 235000011837 pasties Nutrition 0.000 description 2
- SQGYOTSLMSWVJD-UHFFFAOYSA-N silver(1+) nitrate Chemical compound [Ag+].[O-]N(=O)=O SQGYOTSLMSWVJD-UHFFFAOYSA-N 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- WRIDQFICGBMAFQ-UHFFFAOYSA-N (E)-8-Octadecenoic acid Natural products CCCCCCCCCC=CCCCCCCC(O)=O WRIDQFICGBMAFQ-UHFFFAOYSA-N 0.000 description 1
- LQJBNNIYVWPHFW-UHFFFAOYSA-N 20:1omega9c fatty acid Natural products CCCCCCCCCCC=CCCCCCCCC(O)=O LQJBNNIYVWPHFW-UHFFFAOYSA-N 0.000 description 1
- QSBYPNXLFMSGKH-UHFFFAOYSA-N 9-Heptadecensaeure Natural products CCCCCCCC=CCCCCCCCC(O)=O QSBYPNXLFMSGKH-UHFFFAOYSA-N 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 1
- 239000004166 Lanolin Substances 0.000 description 1
- ZQPPMHVWECSIRJ-UHFFFAOYSA-N Oleic acid Natural products CCCCCCCCC=CCCCCCCCC(O)=O ZQPPMHVWECSIRJ-UHFFFAOYSA-N 0.000 description 1
- 239000005642 Oleic acid Substances 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 239000003610 charcoal Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000002526 effect on cardiovascular system Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 235000011187 glycerol Nutrition 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- DKAGJZJALZXOOV-UHFFFAOYSA-N hydrate;hydrochloride Chemical compound O.Cl DKAGJZJALZXOOV-UHFFFAOYSA-N 0.000 description 1
- QXJSBBXBKPUZAA-UHFFFAOYSA-N isooleic acid Natural products CCCCCCCC=CCCCCCCCCC(O)=O QXJSBBXBKPUZAA-UHFFFAOYSA-N 0.000 description 1
- 229940039717 lanolin Drugs 0.000 description 1
- 235000019388 lanolin Nutrition 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000000926 neurological effect Effects 0.000 description 1
- 239000000825 pharmaceutical preparation Substances 0.000 description 1
- 229940127557 pharmaceutical product Drugs 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 229910001961 silver nitrate Inorganic materials 0.000 description 1
- 230000001225 therapeutic effect Effects 0.000 description 1
Landscapes
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
Description
Procédé de préparation de l'oléate d'aeétylcholine. La présente invention a. pour objet un procédé de préparation de Foléate d'a.c6tyl- choline.
Ce procédé est caractérisé en ce que l'or fait réagir de Foléate d'argent avec un halo- hydrate d'acétylcholine, de manière qu'il se forme par .double décomposition, de l'halogé- nure d'argent et de l'oléate d'acétylcholine.
Comme halohydrate, on peut avantageu sement utiliser le chlorhydrate. L'olé ate d'acétylcholine obtenu présente des proprié tés thérapeutiques et est utilisable pour la. préparation de produits pharmaceutiques.
Voici, à titre d'exemple, comment le pro cédé, objet de l'invention, peut être réalisé en pratique. La double décomposition du chlor- hydrate d'acétylcholine par Foléate d'argent, avec précipitation de chlorure d'argent est la suivante:
EMI0001.0025
L'oléate d'argent de départ. peut être pré paré selon la méthode décrite par Whitbby. A cet effet, on ajoute à une solution alcooli que renfermant de 2 à 4 % d'acide oléique, d'abord de l'ammoniaque (densité environ 0,9) puis du nitrate d'argent (dissous dans le minimum d'eau possible)
. Les quantités des corps mis en présence sont celles corresr pondant aux équivalents moléculaires. L'oléate d'argent précipité est filtré après deux ou trois heures puis séché plusieurs heures à 50 C.
Le rendement est à peu près celui théorique. L'oléate d'argent ainsi obtenu est un corps cristallin, d'apparence cireuse, qui brunit rapidement à. la lumière, surtout lors qu'il est humide.
Voici maintenant comment Foléate d'acé- tylcholine peut être préparé selon le procédé de l'invention: On -dissout en agitant 5,350 kg de chlor- hydrate d'acétylcholine pur anhydre dans 6,200 litres d'alcool absolu dans un récipient non métallique à l'abri de la lumière. On ajoute lentement à cette solution en agitant énergiquement, 11,480 kg d'oléate d'argent en poudre. On agite ainsi durant 1/@ heure à. l'abri de la lumière.
La. masse devient d'abord épaisse, puis plus fluide, la. tempéra ture s'élève jusqu'à 40-50 C. La. double dé composition se produit et le chlorure d'argent précipite. Après 10 minutes de repos, .on filtre au vide sur un tapis de 0,500 kg de charbon animal, et lave par cinq fois avec 0,600 litre d'alcool absolu.
Le filtrat -contient l'oléate d'acétylcholine pur. La solution alcoolique est évaporée ,sous le vide et l'alcool récupéiré au<B>70%</B> environ. L'évaporation -est assez lente et il sera utile d'employer des plateaux. La température ne doit pas monter au-dessus de 40 C pour éviter toute décomposition de .1'oléate très sensible à la chaleur.
On obtient une masse pâteuse qui pèse 11,790 kg, c'est l'oléate recherché. Le rende ment est de<B>93,5%</B> par rapport au chlor hydrate de départ. On conserve le produit obtenu sur des plateaux soigneusement à l'abri de l'humidité et de l'air.
L'oléate d'acétylcholine est un composé pâteux à la température ordinaire, jaune pâle, cristallisable par fusion et refroidisse ment ssous vide; il est soluble dans l'eau, l'alcool et l'éther; il peut être en partie extrait de sa solution aqueuse avec de l'éther, ce qui en permet 'la purification.
L'oléate d'acétylcholine peut servir à la préparation d'une pommade, par exemple en le mélangeant à de la. glycérine, de la vase- ,Une et de la lanoline. Cette, pommade s'utilise en application sur la peau, son action est immédiate et prolongée. Elle peut être pres- crite pour certaines affections cardio-vascu laires, neurologiques, ophtalmologiques,
oto- rhinologiques et dermatologiques.
Process for the preparation of acetylcholine oleate. The present invention a. The subject of the invention is a process for the preparation of a.c6tylcholine oleate.
This process is characterized in that the gold reacts silver oleate with an acetylcholine halhydrate, so that, by double decomposition, silver halide and silver are formed. acetylcholine oleate.
As the hydrohalide, the hydrochloride can advantageously be used. The acetylcholine ole ate obtained exhibits therapeutic properties and can be used for. preparation of pharmaceutical products.
Here is, by way of example, how the process, object of the invention, can be carried out in practice. The double decomposition of acetylcholine hydrochloride by silver oleate, with precipitation of silver chloride is as follows:
EMI0001.0025
The starting silver oleate. can be prepared according to the method described by Whitbby. To this end, we add to an alcoholic solution containing 2 to 4% oleic acid, first ammonia (density approximately 0.9) then silver nitrate (dissolved in the minimum amount of water possible)
. The quantities of the bodies brought together are those corresponding to the molecular equivalents. The precipitated silver oleate is filtered off after two or three hours and then dried for several hours at 50 C.
The yield is roughly the theoretical one. The silver oleate thus obtained is a crystalline body, of waxy appearance, which quickly turns brown. light, especially when it is humid.
Here is now how the acetylcholine oleate can be prepared according to the process of the invention: 5.350 kg of pure anhydrous acetylcholine hydrochloride are dissolved by stirring in 6.200 liters of absolute alcohol in a non-metallic container at l. away from light. To this solution is slowly added with vigorous stirring, 11.480 kg of powdered silver oleate. Stirred in this way for 1 / @ hour at. away from light.
The mass first becomes thick, then more fluid. The temperature rises to 40-50 C. Double decomposition occurs and silver chloride precipitates. After standing for 10 minutes, vacuum filtered through a 0.500 kg carpet of animal charcoal, and washed five times with 0.600 liter of absolute alcohol.
The filtrate contains pure acetylcholine oleate. The alcoholic solution is evaporated under vacuum and the alcohol recovered to approximately <B> 70% </B>. Evaporation is quite slow and it will be useful to use trays. The temperature should not rise above 40 ° C. to avoid decomposition of the oleate which is very sensitive to heat.
A pasty mass is obtained which weighs 11.790 kg, it is the desired oleate. The yield is <B> 93.5% </B> relative to the starting hydrochloride hydrate. The product obtained is stored on trays carefully protected from humidity and air.
Acetylcholine oleate is a pasty compound at room temperature, pale yellow, crystallizable by melting and cooling under vacuum; it is soluble in water, alcohol and ether; it can be partly extracted from its aqueous solution with ether, which allows its purification.
Acetylcholine oleate can be used in the preparation of an ointment, for example by mixing it with. glycerin, mud-, A and lanolin. This ointment is used in application on the skin, its action is immediate and prolonged. It can be prescribed for certain cardio-vascular, neurological, ophthalmological,
otorhinological and dermatological.
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH259253T | 1946-11-05 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH259253A true CH259253A (en) | 1949-01-15 |
Family
ID=4473037
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH259253D CH259253A (en) | 1946-11-05 | 1946-11-05 | Process for preparing acetylcholine oleate. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH259253A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2731493A (en) * | 1954-01-25 | 1956-01-17 | Hoffmann La Roche | Choline esters |
-
1946
- 1946-11-05 CH CH259253D patent/CH259253A/en unknown
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2731493A (en) * | 1954-01-25 | 1956-01-17 | Hoffmann La Roche | Choline esters |
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