CH303833A - Process for the preparation of derivatives of tetrahydro-γ-carboline. - Google Patents

Process for the preparation of derivatives of tetrahydro-γ-carboline.

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Publication number
CH303833A
CH303833A CH303833DA CH303833A CH 303833 A CH303833 A CH 303833A CH 303833D A CH303833D A CH 303833DA CH 303833 A CH303833 A CH 303833A
Authority
CH
Switzerland
Prior art keywords
tetrahydro
carboline
methyl
preparation
benzyl
Prior art date
Application number
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German (de)
Inventor
Aktiengesellschaft Farbe Bayer
Original Assignee
Bayer Ag
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 Bayer Ag filed Critical Bayer Ag
Publication of CH303833A publication Critical patent/CH303833A/en

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    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D471/00Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, at least one ring being a six-membered ring with one nitrogen atom, not provided for by groups C07D451/00 - C07D463/00
    • C07D471/02Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, at least one ring being a six-membered ring with one nitrogen atom, not provided for by groups C07D451/00 - C07D463/00 in which the condensed system contains two hetero rings
    • C07D471/04Ortho-condensed systems

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Nitrogen Condensed Heterocyclic Rings (AREA)

Description

  

  Verfahren zur Herstellung von Derivaten des     Tetrahydro-y-carbolins.            Cook    und Reed beschrieben im J.     chem.          Soe.    1945, S. 399 die Darstellung von     3-N-Me-          thyl-tetrahydro-    y-     carbolin-    (3     -Methyl-    3     -aza-          1,2,3,4-tetrahydro-earbazol    )  
EMI0001.0011     
    aus     Phenylhydrazinhydrochlorid    und     N-Me-          thyl-piperidon-(4)

  .    Von     Boekelheide    und     Ans-          worth    (J.     Amer.        Soe.    72, 2132) verwandelten  diese Base mit     Methyljodid    und     Benzylchlorid     durch     Alkylierung    in der     3-Stellung    in     quater-          näre    Salze.  



  Es wurde nun gefunden, dass sich von  diesen Verbindungen pharmazeutisch wert  volle Verbindungen ableiten, die am Stick  stoffatom 9 substituiert sind. Es handelt sieh  dabei um Basen der allgemeinen Formel:  
EMI0001.0026     
    worin     R1    Wasserstoff oder einen einwertigen  Rest, R2 einen     Alkyl-,        Aminoalkyl-,        Aralkyl-,          Aryl-,        Heteroaryl-    oder     Heteroaralkylrest,    Z       Alkyl    und Y H oder     Alkyl    bedeuten.    Die Synthese der neuen Verbindungen  kann auf verschiedene Weise erfolgen.

   So kann  man     9-substituierte        Tetrahydro-y-carboline    er  halten, indem man     N,N-substituierte        Phenyl-          hvdrazine    der Formel  
EMI0001.0041     
    in Gegenwart saurer Kondensationsmittel, z. B.  in alkoholisch oder     wässrig-mineralsai-trer    Lö  sung mit     N-Alkylpiperidonen-(4)    umsetzt.  



  Die Basen sind meist im Hochvakuum  destillierbar, zum Teil sehr     kristallisations-          freudig    und können in Form ihrer ebenfalls gut  kristallisierten Salze Verwendung finden.  



  Gegenstand dieses Patentes ist nun ein  Verfahren zur Herstellung eines Derivates des       Tetrahydro-y-earbolins,    welches dadurch ge  kennzeichnet ist, dass     N,N-Phenyl-benzyl-          hydrazin    in saurem Medium mit     1-Methyl-          piperidon-(4)    umgesetzt wird. Man erhält  dabei das     3-N-Methyl-9-benzyl-tetrahydro-y-          earbolin.    Diese Verbindung ist ein gutes     Anti-          histaminicum,    welches sich vor allem durch  seine lange Wirkungsdauer und durch das  Fehlen von hypnotischen Eigenschaften aus  zeichnet.

   Das eingangs erwähnte 3-N-Methyl-           tetrahydro-y        -carbolin    besitzt keinerlei     Anti-          histaminwirksamkeit.     



  <I>Beispiel:</I>  23,4 g (0,1     Mol)        N,N-T-Phenyl-benzylhydrazin-          hydrochlorid    und 15 g (0,1     Mol)        1-Methyl-          piperidon-(4)-hydrochlorid    werden in 250     ein-          einer    kalt     gesättigten    alkoholischen Salzsäure  drei Stunden gekocht. Nach dem Abkühlen  saugt man von dem gebildeten     Ammonchlorid          D    ab, versetzt mit Wasser und verdampft den  Alkohol im Vakuum. Der Rückstand wird in  Wasser aufgenommen.

   Ein Teil der neuen  Verbindung kristallisiert gelegentlich als  Hydrochlorid aus und kann direkt durch     Kri-          siallisation    aus Alkohol/Äther gereinigt wer  den, den übrigen Teil     gewinnt    man, indem     man     die alkalisch     gemaehte        Lösung    mit Äther extra  hiert und den     Extrakt    nach Trocknen über       Kaliumearbonat    und Verdampfen des Äthers       i    im Hochvakuum destilliert.     Kp.1        m.    207 bis  215 .

   Das     3-N-Methyl-9-benzyl-tetrahydro-y-          carbolin    kristallisiert nach Anreiben mit     Pe-          troläther.    Umkristallisiert wird aus     Ligroin,          Fp.    88 bis 89 . Hydrochlorid aus Alkohol/  Äther     Pp.    230 ; Gesamtausbeute: 69 % d.     Th.     



  3     -N-Methyl-9-benzyl-tetrahydro-y-carbolin     kann man auch in folgender Weise herstellen:  In eine Lösung von 23 g Natrium in 400     cm3          abs.        Alkohol    trägt man 231 g (1     Mol)        Methyl-          iminodipropionsäure-diäthylester    ein und     de-          stilliert    aus dem Gemisch den     Alkohol    im Va  kuum ab,     zuletzt    durch 2- bis 3stündiges Er  hitzen auf 120 bis 130  bei 3 mm     (Prill    u.

         McElvain,    Am.     Soc.    55,     S.1239).    Der Rück  ; stand wird in einer kalten Mischung von 250 g       konz.    Schwefelsäure und 750     em3    Wasser auf  genommen und bis zum Aufhören der Kohlen-         säureentwicklung    (2 bis 3 Stunden) gekocht.

    Man lässt abkühlen und trägt in die so bereitete  Lösung von     1-Methyl-piperidon-    (4) 109 g  (0,55     Mol)        N,N-Benzyl-phenyl-hydrazin    und  ferner 200     em3    einer etwa     2.5'/o        igen        Sehwefel-          säure    ein. Wiederum wird 3 Stunden gekocht.  Aus dem     Reaktionsgemiseh        lässt    sieh das     3-N-          Methyl-9-benzyl-tetrahydro-,        -carbolin    isolieren,  entweder als Sulfat.

   (kristallwasserhaltig) vom  F.120 , durch Verdünnen der Reaktions  mischung mit     Wasser    auf das doppelte Vo  lumen und     Animpfen,    oder als     naphthalin-1,5-          disulfonsaures    Salz (F. 280 ), durch Versetzen  mit einer     wä.ssrigenLösung    von 95 g     naphthalin-          1.,5-disulfonsaurem    Natrium und Abstumpfen  mit     Natriumacetat    oder in der in Absatz 1  angegebenen Weise.

   Ausbeute: 80 bis 85      ö     d.     Th.    bezogen auf eingesetztes     N,N        -Benzv1-          phenyl-hy        drazin.  



  Process for the preparation of derivatives of tetrahydro-γ-carboline. Cook and Reed described in J. chem. Soe. 1945, p. 399 the representation of 3-N-methyl-tetrahydro-y-carboline- (3-methyl-3-aza-1,2,3,4-tetrahydro-earbazole)
EMI0001.0011
    from phenylhydrazine hydrochloride and N-methyl-piperidone- (4)

  . Von Boekelheide and Answorth (J. Amer. Soe. 72, 2132) converted this base with methyl iodide and benzyl chloride into quaternary salts by alkylation in the 3-position.



  It has now been found that pharmaceutically valuable compounds that are substituted on the nitrogen atom 9 are derived from these compounds. These are bases of the general formula:
EMI0001.0026
    where R1 is hydrogen or a monovalent radical, R2 is an alkyl, aminoalkyl, aralkyl, aryl, heteroaryl or heteroaralkyl radical, Z is alkyl and Y is H or alkyl. The synthesis of the new compounds can be carried out in various ways.

   So you can get 9-substituted tetrahydro-y-carbolines he by using N, N-substituted phenyl hvdrazines of the formula
EMI0001.0041
    in the presence of acidic condensing agents, e.g. B. in alcoholic or aqueous mineralsai-trer solution with N-alkylpiperidones (4).



  The bases can usually be distilled in a high vacuum, some of them are very prone to crystallization and can be used in the form of their also well-crystallized salts.



  The subject of this patent is a process for the preparation of a derivative of tetrahydro-y-earboline, which is characterized in that N, N-phenyl-benzyl-hydrazine is reacted with 1-methyl-piperidone- (4) in an acid medium. This gives 3-N-methyl-9-benzyl-tetrahydro-y-earbolin. This compound is a good anti-histamine, which is characterized above all by its long duration of action and by the lack of hypnotic properties.

   The 3-N-methyl-tetrahydro-y-carboline mentioned at the beginning has no anti-histamine activity.



  <I> Example: </I> 23.4 g (0.1 mol) of N, NT-phenylbenzylhydrazine hydrochloride and 15 g (0.1 mol) of 1-methylpiperidone (4) hydrochloride are used in 250 a cold saturated alcoholic hydrochloric acid boiled for three hours. After cooling, the ammonium chloride D formed is filtered off with suction, water is added and the alcohol is evaporated off in vacuo. The residue is taken up in water.

   Part of the new compound occasionally crystallizes out as hydrochloride and can be purified directly by crystallization from alcohol / ether, the remaining part is obtained by extracting the alkaline solution with ether and the extract after drying over potassium carbonate and evaporation of the ether i distilled in a high vacuum. Kp 1 m. 207 to 215.

   The 3-N-methyl-9-benzyl-tetrahydro-γ-carboline crystallizes after trituration with petroleum ether. It is recrystallized from ligroin, melting point 88 to 89. Hydrochloride from alcohol / ether pp. 230; Total yield: 69% of theory Th.



  3 -N-methyl-9-benzyl-tetrahydro-y-carboline can also be prepared in the following way: In a solution of 23 g of sodium in 400 cm3 of abs. Alcohol is added to 231 g (1 mol) of methyl iminodipropionic acid diethyl ester and the alcohol is distilled from the mixture in vacuo, finally by heating to 120 to 130 at 3 mm for 2 to 3 hours (Prill u.

         McElvain, Am. Soc. 55, p.1239). The back; stand is concentrated in a cold mixture of 250 g. Sulfuric acid and 750 cubic meters of water are taken up and boiled until the evolution of carbon dioxide ceases (2 to 3 hours).

    It is allowed to cool and in the solution of 1-methyl-piperidone- (4) thus prepared, 109 g (0.55 mol) of N, N-benzyl-phenyl-hydrazine and, furthermore, 200 em3 of an approximately 2.5% sulfuric acid acid a. Again it is boiled for 3 hours. The 3-N-methyl-9-benzyl-tetrahydro-, carboline can be isolated from the reaction mixture, either as sulfate.

   (contains water of crystallization) from F.120, by diluting the reaction mixture with water to double the volume and inoculating, or as naphthalene-1,5-disulfonic acid salt (F. 280), by adding an aqueous solution of 95 g of naphthalene - 1., 5-disulfonic acid sodium and blunting with sodium acetate or in the manner indicated in paragraph 1.

   Yield: 80 to 85 ö d. Th. Based on N, N -Benzv1-phenyl-hy drazin used.

 

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines Derivates des Tetrahydro-y -carbolins der Formel EMI0002.0082 dadurch gekennzeichnet, da.ss <B>-_X<I>\N</I></B> -Phenyl- benzyihydrazin in saurem Medium mit 1-.Ie- thyl-piperidon-(4) umgesetzt wird. Das so erhaltene 3-N-methyl-9-benzyl-tetra- hydro-;r-carbolin schmilzt bei 88 bis 89 C. Es besitzt Antihistaminwirkung und soll als Heilmittel Verwendung finden. PATENT CLAIM: Process for the preparation of a derivative of tetrahydro-y-carboline of the formula EMI0002.0082 characterized in that s <B>-_X<I>\N</I> </B> -phenylbenzyihydrazine is reacted with 1-ethyl-piperidone- (4) in an acidic medium. The 3-N-methyl-9-benzyl-tetrahydro-; r-carboline obtained in this way melts at 88 to 89 C. It has antihistamine effects and is said to be used as a medicinal product.
CH303833D 1951-04-30 1952-04-28 Process for the preparation of derivatives of tetrahydro-γ-carboline. CH303833A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE303833X 1951-04-30

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CH303833A true CH303833A (en) 1954-12-15

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CH303833D CH303833A (en) 1951-04-30 1952-04-28 Process for the preparation of derivatives of tetrahydro-γ-carboline.

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CH (1) CH303833A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4141980A (en) * 1976-04-08 1979-02-27 Endo Laboratories Inc. Tranquilizing trans-hexahydro-pyrido-indole-2-alkanols, -alkanones, -alkanonitriles, -alkanoic acids, esters and amides

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4141980A (en) * 1976-04-08 1979-02-27 Endo Laboratories Inc. Tranquilizing trans-hexahydro-pyrido-indole-2-alkanols, -alkanones, -alkanonitriles, -alkanoic acids, esters and amides

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