CH485654A - Process for the preparation of 10,11-dihydro-5H-dibenzo (a, d) -cycloheptene derivatives - Google Patents

Process for the preparation of 10,11-dihydro-5H-dibenzo (a, d) -cycloheptene derivatives

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Publication number
CH485654A
CH485654A CH489867A CH489867A CH485654A CH 485654 A CH485654 A CH 485654A CH 489867 A CH489867 A CH 489867A CH 489867 A CH489867 A CH 489867A CH 485654 A CH485654 A CH 485654A
Authority
CH
Switzerland
Prior art keywords
carbon atoms
dibenzo
dihydro
hydrogen atom
radicals
Prior art date
Application number
CH489867A
Other languages
German (de)
Inventor
Hamish Dr Russel Jeff
Original Assignee
Wander Ag Dr A
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Wander Ag Dr A filed Critical Wander Ag Dr A
Priority to CH489867A priority Critical patent/CH485654A/en
Publication of CH485654A publication Critical patent/CH485654A/en

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Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D487/00Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, not provided for by groups C07D451/00 - C07D477/00
    • C07D487/02Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, not provided for by groups C07D451/00 - C07D477/00 in which the condensed system contains two hetero rings
    • C07D487/08Bridged systems

Description

  

  



  Verfahren zur Herstellung von 10,   11-Dihydro-SH-dibenzo    [a,   d]-cyclohepten-Derivaten   
Gegenstand der Erfindung ist ein Verfahren zur Herstellurrg von neuen   5-aminomethylierten    10,11-Di  hydro-51H-dibenzo    [a, d]   cycloheptenen    der Formel :
EMI1.1     
 sowie von Säure-Additionssalzen davon. In Formel I bedeutet   Ri    ein Wasserstoffatom oder eine höchstens 3 C-Atome enthaltende ALkylgruppe. Die Reste R2 stellen höchstens 3 C-Atome enthaltende Alkylgruppen dar, und von den Resten   R3    und R bedeutet der eine ein Wasserstoffatom und der andere ein Wasserstoffatom, ein Halogenatom oder eine höchstens 3 C Atome enthaltende Alkylgruppe.



   Die genannten Verbindungen zeigen, wie dies beim   Elektroschock-Test [Methode    von Goodmann et al. ; J. Pharmacol. 108, 168 (1953)] ersichtlich ist, starke antikonvulsive Wirksamkeit und kommen daher insbesondere als Antiepileptika in Betracht.



   Verbindungen entsprechend Formel I werden erhalten, wenn man quaternäre Ammoniumsalze der Formel :
EMI1.2     
 in welcher   R"R : s und R4    die genannte Bedeutung haben, die Reste   R'2    gleich oder verschieden sind und höchstens 3 C-Atome enthaltende   Alkyl-, Alkenyl-oder      Alkinylgruppen    bedeuten, und   X-einen Säurerest,    insbesondere ein Halogenion, darstellt, reduktiv spaltet.



   Die reduktive Spaltung kann z. B. mit Natrium  amalgam    in alkoholischer oder mit Raney-Nickel-Legierung in alkalischer Lösung durchgeführt werden.



   Die als Ausgangsstoffe verwendbaren   quatemären    Ammoniumsalze der Formel   lI    können ihrerseits z. B. erhalten werden, wenn man 5, 11-Methylenimino-10,11  dihydro-5H-dibenzo    [a,   d]-cycloheptene    der Formel :
EMI1.3     
 in welcher   RI,      Rl und R4    die genannte Bedeutung haben und R'ein Wasserstoffatom oder eine höchstens 3 C  Atome enthaltende Alkyl-, Alkenyl-oder Alkinylgruppe darstellt, mit einem Alkylierungs-,   Akenylierungs-oder    Akinylierungsmittel quaternisiert.



   Die nach diesem Verfahren erhaltenen Verbindungen entsprechend Formel I können sowohl als freie Basen als auch in Form ihrer Additionssalze mit geeigneten Säuren, wie Halogenwasserstoffsäuren, Toluolsulfonsäuren, Schwefelsäure, Salpetersäure, Phosphorsäure, Essigsäure, Oxalsäure, Malonsäure, Bernsteinsäure, Apfelsäure, Maleinsäure oder Weinsäure, gewonnen und verwendet werden.



      Beispiel I   
Zu einer Suspension von 1, 35 g   N-Methyl-5,    11  methylenimino-10, 11-dihydro-5H-dibenzo [a, d]    cyclohepten-Methoiodid (Smp. 236-237  C) in 15 ml 20% iger Natronlauge werden unter Kühlen und   Ruhren   
1, 4 g   Raney-Nickel-Legierung    in kleinen Portionen zugegeben. Hierauf wird das Reaktionsgemisch während 4 Stunden weitergerührt und langsam auf 40  C erwärmt. Nach Abkühlen wird das Reaktionsgemisch fünfmal mit Ather ausgeschüttelt. Die   Atherauszüge    werden viermal mit 2n Salzsäure extrahiert, und die   salzsauren    Extrakte werden mit 30 % iger Natronlauge alkalisch gestellt und fünfmal mit Ather ausgeschüttelt.

   Die Atherauszüge werden mit Wasser gewaschen, mit Natriumsulfat getrocknet und eingedampft. Der   erhaltene olige    Rückstand wird in das Hydrochlorid übergeführt, wobei man nach Kristallisation aus Methanol/Äther 0, 64 g (62% % der Theorie) 5-Dimethylaminomethyl-10,11 -dihydto-SH-dibenzo [a, d]   cyclohepten hydrochlorid    in Form von farblosen Nadeln vom Schmelzpunkt 290-291  C erhält.



   Bei analogem Vorgehen wie im vorerwähnten Beispiel erhält man aus den entsprechenden   Ausgangs-    stoffen weiterhin z. B. die in der folgenden Tabelle angegebenen Produkte. In der Tabelle haben R1, R2, R3 und   R4    die früher genannte Bedeutung.



     Beispiel R1 R2 R3 R4 Schmelzpunkt       2-CH3 XH3 H H Hydrochlorid    :   245-246  C   
3 H -C2H5 H H Hydrochlorid :   250  C      (Zers.)       4 H-CH3 2-CI H Hydrochlorid    : 301-305  C    5 H-CH3 2-CH3 H Hydrochlorid    :   234-235  C       6 H-CH3 H 7-CI Hydrochlorid    :   230-240e C       7 H-CH3 H 7-CHs Hydrochlorid    : 230-231  C
8 H -CH3 1-Cl H Hydrochlorid: 254-256 C



  



  Process for the preparation of 10, 11-dihydro-SH-dibenzo [a, d] -cycloheptene derivatives
The invention relates to a process for the preparation of new 5-aminomethylated 10,11-dihydro-51H-dibenzo [a, d] cycloheptenes of the formula:
EMI1.1
 as well as acid addition salts thereof. In formula I, Ri denotes a hydrogen atom or an alkyl group containing at most 3 carbon atoms. The radicals R2 represent alkyl groups containing at most 3 carbon atoms, and of the radicals R3 and R one denotes a hydrogen atom and the other denotes a hydrogen atom, a halogen atom or an alkyl group containing at most 3 carbon atoms.



   The compounds mentioned show how this occurs in the electric shock test [method by Goodmann et al. ; J. Pharmacol. 108, 168 (1953)], strong anticonvulsant activity and are therefore particularly suitable as antiepileptic drugs.



   Compounds corresponding to formula I are obtained when quaternary ammonium salts of the formula:
EMI1.2
 in which R "R: s and R4 have the stated meaning, the radicals R'2 are identical or different and denote alkyl, alkenyl or alkynyl groups containing at most 3 carbon atoms, and X- represents an acid radical, in particular a halogen ion , reductively splits.



   The reductive cleavage can, for. B. be carried out with sodium amalgam in alcoholic or with Raney nickel alloy in alkaline solution.



   The quaternary ammonium salts of the formula lI which can be used as starting materials can in turn, for. B. obtained if 5, 11-methylenimino-10,11 dihydro-5H-dibenzo [a, d] -cycloheptenes of the formula:
EMI1.3
 in which RI, Rl and R4 have the meaning mentioned and R 'represents a hydrogen atom or an alkyl, alkenyl or alkynyl group containing at most 3 carbon atoms, quaternized with an alkylating, alkenylating or akynylating agent.



   The compounds corresponding to formula I obtained by this process can be obtained both as free bases and in the form of their addition salts with suitable acids, such as hydrohalic acids, toluenesulfonic acids, sulfuric acid, nitric acid, phosphoric acid, acetic acid, oxalic acid, malonic acid, succinic acid, malic acid, maleic acid or tartaric acid and used.



      Example I.
To a suspension of 1.35 g of N-methyl-5, 11 methylenimino-10, 11-dihydro-5H-dibenzo [a, d] cycloheptene methoiodide (melting point 236-237 C) in 15 ml of 20% sodium hydroxide solution under cooling and stirring
1.4 g Raney nickel alloy were added in small portions. The reaction mixture is then stirred for a further 4 hours and slowly warmed to 40.degree. After cooling, the reaction mixture is extracted five times with ether. The ether extracts are extracted four times with 2N hydrochloric acid, and the hydrochloric acid extracts are made alkaline with 30% strength sodium hydroxide solution and extracted five times with ether.

   The ether extracts are washed with water, dried with sodium sulfate and evaporated. The oily residue obtained is converted into the hydrochloride, after crystallization from methanol / ether 0.64 g (62% of theory) of 5-dimethylaminomethyl-10,11-dihydto-SH-dibenzo [a, d] cycloheptene hydrochloride in Obtains the form of colorless needles with a melting point of 290-291 C.



   If the procedure is analogous to that in the example mentioned above, the corresponding starting materials still yield z. B. the products given in the following table. In the table, R1, R2, R3 and R4 have the meanings given earlier.



     Example R1 R2 R3 R4 Melting Point 2-CH3 XH3 H H Hydrochloride: 245-246 C
3 H -C2H5 HH hydrochloride: 250 C (dec.) 4 H-CH3 2-CI H hydrochloride: 301-305 C 5 H-CH3 2-CH3 H hydrochloride: 234-235 C 6 H-CH3 H 7-CI hydrochloride : 230-240e C 7 H-CH3 H 7-CHs hydrochloride: 230-231 C
8 H -CH3 1-Cl H hydrochloride: 254-256 C

 

Claims (1)

PATENTANSPRUCH Verfahren zur Herstellung von 5-aminomethylierten 10, 11 wDihydro-SH-dibenzo [a, d] cycloheptenen der Formel EMI2.1 in welcher R, ein Wasserstoffatom oder eine höchstens 3 C-Atome enthaltende Alkylgruppe bedeutet, die Reste R2 höchstens 3 C-Atome enthaltende Alkylgrup- pen darstellen, und von den Resten R3 und R4 der eine ein Wasserstoffatom und der andere ein Wasserstoffatom, Halogenatom oder eine höchstens 3 C-Atome enthaltende Alkylgruppe bedeutet. sowie von Säure Additionssalzen davon, dadurch gekennzeichnet, dass man quabernäre Ammoniumsalze der Formel : PATENT CLAIM Process for the preparation of 5-aminomethylated 10, 11 w-dihydro-SH-dibenzo [a, d] cycloheptenes of the formula EMI2.1 in which R is a hydrogen atom or an alkyl group containing at most 3 carbon atoms, the radicals R2 are alkyl groups containing at most 3 carbon atoms, and of the radicals R3 and R4, one is a hydrogen atom and the other is a hydrogen atom, halogen atom or denotes an alkyl group containing at most 3 carbon atoms. as well as acid addition salts thereof, characterized in that quabernary ammonium salts of the formula: EMI2.2 in welcher Ri, R3 und R1 die genannte Bedeutung haben, die Reste R2'gleich oder verschieden sind und höchstens 3 C-Atome enthaltende Alkyl-, Alkenyl-oder Alkinyl- gruppen bedeuten, und X# einen Säurerest darstellt, reduktiv spaltet, worauf man das erhaltene Reaktionsprodukt als freie Base oder in Form eines Säure-Additionssalzes isoliert. EMI2.2 in which Ri, R3 and R1 have the meaning mentioned, the radicals R2 'are identical or different and denote alkyl, alkenyl or alkynyl groups containing at most 3 carbon atoms, and X # represents an acid radical, reductively cleaved, whereupon the reaction product obtained as a free base or in the form of an acid addition salt isolated.
CH489867A 1967-04-06 1967-04-06 Process for the preparation of 10,11-dihydro-5H-dibenzo (a, d) -cycloheptene derivatives CH485654A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CH489867A CH485654A (en) 1967-04-06 1967-04-06 Process for the preparation of 10,11-dihydro-5H-dibenzo (a, d) -cycloheptene derivatives

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH489867A CH485654A (en) 1967-04-06 1967-04-06 Process for the preparation of 10,11-dihydro-5H-dibenzo (a, d) -cycloheptene derivatives

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CH485654A true CH485654A (en) 1970-02-15

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0470127A1 (en) * 1989-04-14 1992-02-12 State Of Oregon By And Through Oregon State Board Of Higher Education On Behalf Oregon Health Sc. Univ. And Oregon State Univ. Pcp receptor ligands and the use thereof
US5688789A (en) * 1989-04-14 1997-11-18 State Of Oregon, Acting By And Through The Oregon State Board Of Higher Education, Acting For And On Behalf Of The Oregon Health Sciences University And The University Of Oregon PCP receptor ligands and the use thereof

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0470127A1 (en) * 1989-04-14 1992-02-12 State Of Oregon By And Through Oregon State Board Of Higher Education On Behalf Oregon Health Sc. Univ. And Oregon State Univ. Pcp receptor ligands and the use thereof
EP0470127A4 (en) * 1989-04-14 1992-06-24 State Of Oregon By And Through The Oregon State Board Of Higher Education On Behalf Of The Oregon Health Sciences University Pcp receptor ligands and the use thereof
US5688789A (en) * 1989-04-14 1997-11-18 State Of Oregon, Acting By And Through The Oregon State Board Of Higher Education, Acting For And On Behalf Of The Oregon Health Sciences University And The University Of Oregon PCP receptor ligands and the use thereof
US6017910A (en) * 1989-04-14 2000-01-25 State Of Oregon, Acting By And Through The Oregon State Board Of Higher Education Acting For And On Behalf Of The Oregon Health Sciences University And The University Of Oregon PCP receptor ligands and the use thereof

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