CH512489A - 1 5-dimethylpseudotropine-3 4 5-trimethoxy-benzoic acid - Google Patents
1 5-dimethylpseudotropine-3 4 5-trimethoxy-benzoic acidInfo
- Publication number
- CH512489A CH512489A CH543268A CH543268A CH512489A CH 512489 A CH512489 A CH 512489A CH 543268 A CH543268 A CH 543268A CH 543268 A CH543268 A CH 543268A CH 512489 A CH512489 A CH 512489A
- Authority
- CH
- Switzerland
- Prior art keywords
- acid
- dimethyl
- pseudotropin
- reacted
- addition salts
- Prior art date
Links
- 239000002253 acid Substances 0.000 claims abstract description 17
- 150000003839 salts Chemical class 0.000 claims abstract description 14
- 150000001875 compounds Chemical class 0.000 claims description 17
- 238000000034 method Methods 0.000 claims description 17
- 238000002360 preparation method Methods 0.000 claims description 9
- 125000001453 quaternary ammonium group Chemical group 0.000 claims description 9
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 8
- 230000000694 effects Effects 0.000 claims description 8
- SJSOFNCYXJUNBT-UHFFFAOYSA-N 3,4,5-trimethoxybenzoic acid Chemical class COC1=CC(C(O)=O)=CC(OC)=C1OC SJSOFNCYXJUNBT-UHFFFAOYSA-N 0.000 claims description 7
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 5
- WPYMKLBDIGXBTP-UHFFFAOYSA-N benzoic acid Chemical compound OC(=O)C1=CC=CC=C1 WPYMKLBDIGXBTP-UHFFFAOYSA-N 0.000 claims description 4
- 230000002848 endoanesthetic effect Effects 0.000 claims description 4
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 claims description 4
- 150000007513 acids Chemical class 0.000 claims description 3
- -1 ester hydrochloride Chemical class 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 3
- IWPZKOJSYQZABD-UHFFFAOYSA-N 3,4,5-trimethoxybenzoic acid Natural products COC1=CC(OC)=CC(C(O)=O)=C1 IWPZKOJSYQZABD-UHFFFAOYSA-N 0.000 claims description 2
- BUHYMJLFRZAFBF-UHFFFAOYSA-N 3,4,5-trimethoxybenzoyl chloride Chemical compound COC1=CC(C(Cl)=O)=CC(OC)=C1OC BUHYMJLFRZAFBF-UHFFFAOYSA-N 0.000 claims description 2
- 206010002091 Anaesthesia Diseases 0.000 claims description 2
- 239000005711 Benzoic acid Substances 0.000 claims description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 claims description 2
- NNJVILVZKWQKPM-UHFFFAOYSA-N Lidocaine Chemical compound CCN(CC)CC(=O)NC1=C(C)C=CC=C1C NNJVILVZKWQKPM-UHFFFAOYSA-N 0.000 claims description 2
- KEAYESYHFKHZAL-UHFFFAOYSA-N Sodium Chemical compound [Na] KEAYESYHFKHZAL-UHFFFAOYSA-N 0.000 claims description 2
- 230000002411 adverse Effects 0.000 claims description 2
- 125000005907 alkyl ester group Chemical group 0.000 claims description 2
- 230000037005 anaesthesia Effects 0.000 claims description 2
- 230000003444 anaesthetic effect Effects 0.000 claims description 2
- 150000008064 anhydrides Chemical class 0.000 claims description 2
- 235000010233 benzoic acid Nutrition 0.000 claims description 2
- 230000036772 blood pressure Effects 0.000 claims description 2
- 239000002775 capsule Substances 0.000 claims description 2
- 238000001816 cooling Methods 0.000 claims description 2
- 230000001419 dependent effect Effects 0.000 claims description 2
- 239000000839 emulsion Substances 0.000 claims description 2
- 150000004820 halides Chemical class 0.000 claims description 2
- 229960004194 lidocaine Drugs 0.000 claims description 2
- 239000003589 local anesthetic agent Substances 0.000 claims description 2
- 239000000155 melt Substances 0.000 claims description 2
- 238000002844 melting Methods 0.000 claims description 2
- 230000008018 melting Effects 0.000 claims description 2
- WYUKTYILRUMKBX-UHFFFAOYSA-N methyl 2,3,4-trimethoxybenzoate Chemical compound COC(=O)C1=CC=C(OC)C(OC)=C1OC WYUKTYILRUMKBX-UHFFFAOYSA-N 0.000 claims description 2
- KACHFMOHOPLTNX-UHFFFAOYSA-N methyl tri-O-methylgallate Natural products COC(=O)C1=CC(OC)=C(OC)C(OC)=C1 KACHFMOHOPLTNX-UHFFFAOYSA-N 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- 230000002085 persistent effect Effects 0.000 claims description 2
- 230000000144 pharmacologic effect Effects 0.000 claims description 2
- 239000006187 pill Substances 0.000 claims description 2
- 238000005956 quaternization reaction Methods 0.000 claims description 2
- 239000011541 reaction mixture Substances 0.000 claims description 2
- 239000007787 solid Substances 0.000 claims description 2
- 239000000243 solution Substances 0.000 claims description 2
- 239000000829 suppository Substances 0.000 claims description 2
- 239000000725 suspension Substances 0.000 claims description 2
- 239000003826 tablet Substances 0.000 claims description 2
- 150000003813 tropane derivatives Chemical class 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 2
- GCFHZZWXZLABBL-UHFFFAOYSA-N ethanol;hexane Chemical compound CCO.CCCCCC GCFHZZWXZLABBL-UHFFFAOYSA-N 0.000 abstract 1
- 229960005015 local anesthetics Drugs 0.000 abstract 1
- 150000003242 quaternary ammonium salts Chemical class 0.000 abstract 1
- 239000012458 free base Substances 0.000 description 5
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 3
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 description 2
- YGSDEFSMJLZEOE-UHFFFAOYSA-N salicylic acid Chemical compound OC(=O)C1=CC=CC=C1O YGSDEFSMJLZEOE-UHFFFAOYSA-N 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- QBYIENPQHBMVBV-HFEGYEGKSA-N (2R)-2-hydroxy-2-phenylacetic acid Chemical compound O[C@@H](C(O)=O)c1ccccc1.O[C@@H](C(O)=O)c1ccccc1 QBYIENPQHBMVBV-HFEGYEGKSA-N 0.000 description 1
- BMYNFMYTOJXKLE-UHFFFAOYSA-N 3-azaniumyl-2-hydroxypropanoate Chemical compound NCC(O)C(O)=O BMYNFMYTOJXKLE-UHFFFAOYSA-N 0.000 description 1
- FEWJPZIEWOKRBE-JCYAYHJZSA-N Dextrotartaric acid Chemical compound OC(=O)[C@H](O)[C@@H](O)C(O)=O FEWJPZIEWOKRBE-JCYAYHJZSA-N 0.000 description 1
- IWYDHOAUDWTVEP-UHFFFAOYSA-N R-2-phenyl-2-hydroxyacetic acid Natural products OC(=O)C(O)C1=CC=CC=C1 IWYDHOAUDWTVEP-UHFFFAOYSA-N 0.000 description 1
- FEWJPZIEWOKRBE-UHFFFAOYSA-N Tartaric acid Natural products [H+].[H+].[O-]C(=O)C(O)C(O)C([O-])=O FEWJPZIEWOKRBE-UHFFFAOYSA-N 0.000 description 1
- 235000011054 acetic acid Nutrition 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 229960004106 citric acid Drugs 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000012442 inert solvent Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000004310 lactic acid Substances 0.000 description 1
- 235000014655 lactic acid Nutrition 0.000 description 1
- 229960002510 mandelic acid Drugs 0.000 description 1
- 150000007522 mineralic acids Chemical class 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- 235000005985 organic acids Nutrition 0.000 description 1
- FJKROLUGYXJWQN-UHFFFAOYSA-N papa-hydroxy-benzoic acid Natural products OC(=O)C1=CC=C(O)C=C1 FJKROLUGYXJWQN-UHFFFAOYSA-N 0.000 description 1
- 235000011007 phosphoric acid Nutrition 0.000 description 1
- 229960004889 salicylic acid Drugs 0.000 description 1
- 239000011975 tartaric acid Substances 0.000 description 1
- 235000002906 tartaric acid Nutrition 0.000 description 1
- JOXIMZWYDAKGHI-UHFFFAOYSA-N toluene-4-sulfonic acid Chemical compound CC1=CC=C(S(O)(=O)=O)C=C1 JOXIMZWYDAKGHI-UHFFFAOYSA-N 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
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
-
- 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
- C07D451/12—Oxygen atoms acylated by aromatic or heteroaromatic carboxylic acids, e.g. cocaine
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Hydrogenated Pyridines (AREA)
- Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
Abstract
(A) 1,5-Dimethylpseudotropine-3,4,5-trimethoxybenzoic acid ester (I):- (B) Acid addn. salts of (I). (C) Quaternary ammonium salts of (I). Local anaesthetics. (IV) (1.5 g.) and (V) (Z = Cl, 2 g.) were mixed and heated in vac. at 160-180 deg. for 2 hrs., cooled, and recryst. from EtOH-n-hexane, giving (I), m.p. 254 deg.
Description
Verfahren zur Herstellung des i,5-Dimethyl-pseudotropin-3,4,5-trimeth oxybenzoesiiureesters
Die Erfindung betrifft ein Verfahren zur Herstellung des pharmakologisch wirksamen, neuen 1,5-Dimethylpseudotropin-3*4,5-trimethoxybenzoe- säureesters der Formel 1:
EMI1.1
und seiner Säureadditionssalze. welches dadurch ge kennzeichnet ist, dass 1,5-Dimethyl-pseudotropin, des sen reaktionsfähige funktionelle Derivate mit einem reaktionsfähigen funktionellen Derivat der 3,4,5-Trimet hoxybenzoesäure umgesetzt wird. Das erhaltene Produkt kann in ein quaternäres Ammonium-Derivat übergeführt werden.
Falls man das Säureadditionssalz aus der freien Base herstellen will, wird diese Reaktion durch Umsetzung der freien Base mit der entsprechenden Säure, vorzugsweise in Gegenwart eines Lösungsmittels, das die Isolierung ermöglicht, durchgeführt. Für diesen Zweck können sowohl anorganische, als auch organische Säuren, wie Salzsäure, Bromwasserstoffsäure, Schwefelsäure, Phosphorsäure, Milchsäure, Essigsäure, Weinsäure, p Toluolsulphonsäure, Mandelsäure, Salizylsäure, Zitronensäure und andere pharmakologisch verträgliche Säuren verwendet werden.
Die quaternären Ammonium-Derivate können zweckmässig derart hergestellt werden, dass die freie Base mit einer Halogenalkyl-Verbindung, zweckmässig in Gegenwart eines inerten Lösungsmittels, umgesetzt wird.
Andererseits. falls man ein Säureadditionssalz in die freie Base überführen will, ist es zweckmässig, das Salz in einem entsprechenden Lösungsmittel zu lösen, die
Lösung mit einer basischen Substanz, wie Natriumhydr oxyd, zu neutralisieren, und die erwünschte Base durch Extraktion oder ähnliche Methode zu trennen.
Infolge der engen Beziehungen zwischen der neuen Verbindung in freier Form und in Form ihrer Säureaddi tionssalze und quaternären Ammonium-Derivate, sind im Vorausgegangenen und nachfolgend unter der freien Base sinngemäss auch die entsprechenden Säureadditionssalze und quaternären Ammonium-Derivate zu verstehen.
Die neue Verbindung der Formel I, sowie ihre Säureadditionssalze und quaternären Ammonium-Deri- vate können in an sich bekannter Weise in Arzneipräparate, gegebenenfalls zusammen mit anderen, pharmakologisch wirksamen Verbindungen und/oder Träger-, Binde-, Netz-, Füll-, Geschmacks- usw. Mitteln in Form von Tabletten, Pillen, Kapseln, Lösungen, Emulsionen, Suspensionen, Suppositorien usw. übergeführt werden.
Die neue Verbindung und ihre Säureadditionssalze und quaternären Ammonium-Derivate besitzen wertvolle pharmakologische Eigenschaften. So weisen sie eine ausgezeichnete lokalanästhetische Wirkung auf, und diese Wirkung ist stärker, als diejenige des Lidocains.
Ausserdem besitzen sie starke endoanästhetische Eigenschaften, wobei diese Wirkung sehr anhaltend ist, und auch bei i. v. Dosen von 2 mg/kg trifft diese Wirkung diejenige der bisher bekannten Endoanästhetica über.
Eine weitere vorteilhafte Eigenschaft der neuen Verbindung besteht darin, dass neben einer totalen und dauerhaften Anästhesie diese Verbindung keine rasche Blutdrucksenkung oder keine anderen nachteiligen Nebenwirkungen verursacht.
Das erfindungsgemässe Verfahren zur Herstellung der neuen Verbindung wird anhand der nachstehenden Beispiele näher erläutert.
Beispiel I
1,5 g 1,5-Dimethyl-pseudotropin-hydrochlorid und 2 g 3,4,5-Trimethoxybenzoesäure-chlorid werden fein gemahlen und bei 16S180 OC unter mit Hilfe von Wasserstrahlpumpe hergestelltem Vakuum am ölbad bei 160-180 OC geschmolzen. Die Schmelze wird zwei Stunden lang unter diesen Verhältnissen gehalten. Nach Abkühlen wird die erhaltene feste Substanz aus einem Gemisch von Aethanol und n-Hexan umkristallisiert.
Auf diese Weise werden 1,8 g 1,5-pimethyl- pseudotropin-3 ,4,5-trimethoxy-benzoesäureesterhydrochlorid mit einem Schmelzpunkt von 254 "C erhalten.
Analysenangaben Theoretisch /o: C 60,05 H 7,51 N 3,51 Cl 8,88 Gefunden, O/o: C 60,04 H 7,29 N 3,81 Cl 8,85
Beispiel 2
1,7 g 1 ,5-Dimethyl-pseudotropin und 2,7 g Trimethoxybenzoesäuremethylester werden mit 2Gew.O/o Natriummetall, berechnet auf das Tropan-Derivat, bei 110 "C 3 Stunden lang unter einem Druck von 20 mm Hg erwärmt. Nach Aufarbeitung und Behandlung des Reaktionsgemisches mit Salzsäure wird dieselbe Verbindung mit denselben Eigenschaften wie im Beispiel 1 erhalten.
PATENTANSPRÜCHE
1. Verfahren zur Herstellung des neuen 1,5-Dime thyl-pseudotropin-3 ,4,5-trimethoxybenzoesäureesters der Formel
EMI2.1
und seiner Säureadditionssalze, dadurch gekennzeichnet, dass 1,5-Dimethyl-pseudotropin, oder ein reaktionsfähiges funktionelles Derivat davon mit einem reaktionsfähigen funktionellen Derivat der 3,4,5-Trimethoxybenzoesäure umgesetzt wird.
II. Verwendung der nach dem Verfahren gemäss Patentanspruch I erhaltenen Verbindungen zur Herstellung von deren quaternären Ammonium-Derivaten durch Quaternisierung.
UNTERANSPRÜCHE
1. Verfahren nach Patentanspruch I, dadurch gekenzeichnet, dass das Hydrochlorid des 1,5-Dimethyl- pseudotropins umgesetzt wird.
2. Verfahren nach Patentanspruch I, dadurch gekennzeichnet, dass das Anhydrid, ein Halogenid oder ein niederer Alkylester der 3,4,5-Trimethoxybenzoesäure umgesetzt werden.
3. Verfahren nach Unteranspruch 2, dadurch gekennzeichnet, dass das Chlorid der 3,4,5-Tnmethoxy' benzoesäure umgesetzt wird.
4. Verfahren nach Patentanspruch I, dadurch gekennzeichnet, dass die erhaltenen Verbindungen mit Säuren zu den entsprechenden pharmakologisch verträglichen Säureadditionssalzen umgesetzt werden.
**WARNUNG** Ende DESC Feld konnte Anfang CLMS uberlappen**.
Process for the preparation of the i, 5-dimethyl-pseudotropine-3,4,5-trimethoxybenzoic acid ester
The invention relates to a process for the preparation of the pharmacologically active, new 1,5-dimethylpseudotropin-3 * 4,5-trimethoxybenzoic acid ester of the formula 1:
EMI1.1
and its acid addition salts. which is characterized in that 1,5-dimethyl-pseudotropin, whose reactive functional derivative is reacted with a reactive functional derivative of 3,4,5-trimethoxybenzoic acid. The product obtained can be converted into a quaternary ammonium derivative.
If the acid addition salt is to be prepared from the free base, this reaction is carried out by reacting the free base with the corresponding acid, preferably in the presence of a solvent which enables isolation. Both inorganic and organic acids such as hydrochloric acid, hydrobromic acid, sulfuric acid, phosphoric acid, lactic acid, acetic acid, tartaric acid, p-toluenesulphonic acid, mandelic acid, salicylic acid, citric acid and other pharmacologically acceptable acids can be used for this purpose.
The quaternary ammonium derivatives can conveniently be prepared in such a way that the free base is reacted with a haloalkyl compound, advantageously in the presence of an inert solvent.
On the other hand. if you want to convert an acid addition salt into the free base, it is advisable to dissolve the salt in an appropriate solvent, which
To neutralize the solution with a basic substance, such as sodium hydroxide, and to separate the desired base by extraction or a similar method.
As a result of the close relationships between the new compound in free form and in the form of its acid addition salts and quaternary ammonium derivatives, the corresponding acid addition salts and quaternary ammonium derivatives are to be understood in the preceding and below by the free base.
The new compound of the formula I, as well as its acid addition salts and quaternary ammonium derivatives can be used in a manner known per se in medicinal preparations, optionally together with other pharmacologically active compounds and / or carrier, binding, wetting, filling, flavoring - etc. Agents in the form of tablets, pills, capsules, solutions, emulsions, suspensions, suppositories, etc. are transferred.
The new compound and its acid addition salts and quaternary ammonium derivatives have valuable pharmacological properties. They have an excellent local anesthetic effect, and this effect is stronger than that of lidocaine.
They also have strong endo-anesthetic properties, this effect being very persistent, and also with i. v. At doses of 2 mg / kg, this effect exceeds that of the previously known endoanesthetics.
Another advantageous property of the new compound is that, in addition to providing total and permanent anesthesia, this compound does not cause any rapid lowering of blood pressure or any other adverse side effects.
The process according to the invention for the preparation of the new compound is illustrated in more detail by means of the following examples.
Example I.
1.5 g of 1,5-dimethyl-pseudotropine hydrochloride and 2 g of 3,4,5-trimethoxybenzoic acid chloride are finely ground and melted at 160-180 ° C. in an oil bath at 160-180 ° C. under a vacuum created with the aid of a water jet pump. The melt is held under these conditions for two hours. After cooling, the solid substance obtained is recrystallized from a mixture of ethanol and n-hexane.
In this way, 1.8 g of 1,5-pimethyl-pseudotropin-3, 4,5-trimethoxy-benzoic acid ester hydrochloride with a melting point of 254 ° C. are obtained.
Analysis data Theoretical / o: C 60.05 H 7.51 N 3.51 Cl 8.88 Found, O / o: C 60.04 H 7.29 N 3.81 Cl 8.85
Example 2
1.7 g of 1,5-dimethyl-pseudotropin and 2.7 g of methyl trimethoxybenzoate are heated with 2% by weight of sodium metal, calculated on the tropane derivative, at 110 ° C. for 3 hours under a pressure of 20 mm Hg Working up and treating the reaction mixture with hydrochloric acid, the same compound with the same properties as in Example 1 is obtained.
PATENT CLAIMS
1. Process for the preparation of the new 1,5-dimethyl-pseudotropin-3, 4,5-trimethoxybenzoic acid ester of the formula
EMI2.1
and its acid addition salts, characterized in that 1,5-dimethyl-pseudotropin, or a reactive functional derivative thereof, is reacted with a reactive functional derivative of 3,4,5-trimethoxybenzoic acid.
II. Use of the compounds obtained by the process according to patent claim I for the preparation of their quaternary ammonium derivatives by quaternization.
SUBCLAIMS
1. The method according to claim I, characterized in that the hydrochloride of 1,5-dimethyl pseudotropin is converted.
2. The method according to claim I, characterized in that the anhydride, a halide or a lower alkyl ester of 3,4,5-trimethoxybenzoic acid are reacted.
3. The method according to dependent claim 2, characterized in that the chloride of 3,4,5-Tnmethoxy 'benzoic acid is reacted.
4. The method according to claim I, characterized in that the compounds obtained are reacted with acids to give the corresponding pharmacologically acceptable acid addition salts.
** WARNING ** End of DESC field could overlap beginning of CLMS **.
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| HUEE001379 | 1967-04-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH512489A true CH512489A (en) | 1971-09-15 |
Family
ID=10995228
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH543268A CH512489A (en) | 1967-04-12 | 1968-04-11 | 1 5-dimethylpseudotropine-3 4 5-trimethoxy-benzoic acid |
Country Status (10)
| Country | Link |
|---|---|
| AT (1) | AT281306B (en) |
| BE (1) | BE713630A (en) |
| CH (1) | CH512489A (en) |
| DE (1) | DE1770172A1 (en) |
| DK (1) | DK116596B (en) |
| FR (1) | FR1558897A (en) |
| GB (1) | GB1165104A (en) |
| IL (1) | IL29760A (en) |
| NL (1) | NL6805021A (en) |
| SE (1) | SE327710B (en) |
-
1968
- 1968-04-02 GB GB05875/68A patent/GB1165104A/en not_active Expired
- 1968-04-05 IL IL29760A patent/IL29760A/en unknown
- 1968-04-09 DK DK159168AA patent/DK116596B/en unknown
- 1968-04-09 NL NL6805021A patent/NL6805021A/xx unknown
- 1968-04-09 AT AT350468A patent/AT281306B/en not_active IP Right Cessation
- 1968-04-10 SE SE04913/68A patent/SE327710B/xx unknown
- 1968-04-10 DE DE19681770172 patent/DE1770172A1/en active Pending
- 1968-04-10 FR FR1558897D patent/FR1558897A/fr not_active Expired
- 1968-04-11 CH CH543268A patent/CH512489A/en not_active IP Right Cessation
- 1968-04-12 BE BE713630D patent/BE713630A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| GB1165104A (en) | 1969-09-24 |
| IL29760A (en) | 1972-02-29 |
| DE1770172A1 (en) | 1972-03-09 |
| BE713630A (en) | 1968-10-14 |
| SE327710B (en) | 1970-08-31 |
| NL6805021A (en) | 1968-10-14 |
| AT281306B (en) | 1970-05-11 |
| IL29760A0 (en) | 1968-06-20 |
| DK116596B (en) | 1970-01-26 |
| FR1558897A (en) | 1969-02-28 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PL | Patent ceased |