CH495345A - Preparation process for 19-nor-testosterone - Google Patents

Preparation process for 19-nor-testosterone

Info

Publication number
CH495345A
CH495345A CH1284561A CH1284561A CH495345A CH 495345 A CH495345 A CH 495345A CH 1284561 A CH1284561 A CH 1284561A CH 1284561 A CH1284561 A CH 1284561A CH 495345 A CH495345 A CH 495345A
Authority
CH
Switzerland
Prior art keywords
testosterone
keto
reduction
formula
methyl
Prior art date
Application number
CH1284561A
Other languages
French (fr)
Inventor
Nomine Gerard
Bucourt Robert
Pierdet Andre
Original Assignee
Roussel Uclaf
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
Priority claimed from FR803644A external-priority patent/FR1243000A/en
Priority claimed from FR807570A external-priority patent/FR76518E/en
Priority claimed from FR844101A external-priority patent/FR79608E/en
Application filed by Roussel Uclaf filed Critical Roussel Uclaf
Publication of CH495345A publication Critical patent/CH495345A/en

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07JSTEROIDS
    • C07J1/00Normal steroids containing carbon, hydrogen, halogen or oxygen, not substituted in position 17 beta by a carbon atom, e.g. estrane, androstane
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07JSTEROIDS
    • C07J75/00Processes for the preparation of steroids in general

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Description

  

  
 



  Procédé de préparation de   19-nor-testostérone   
 Suivant le procédé du brevet principal on obtient de la 19-nor-testostérone par réduction des composés   A8    -méthyl-7-céto-8-(3"-cétobutyl)-3,4- [3'-acyloxy-cyclopentano-(2',1')]-octahydronaphtaléniques, de formule I:
EMI1.1     
 dans laquelle Ac représente le radical d'un acide organique carboxylique, en composés 3-méthyl-7-céto-8 (3"-cétobutyl)-3,4-[3'-acyloxy-cyclopentano-(2',1')] -décahydronaphtaléniques correspondants, de formule   TT:   
EMI1.2     
 et par cyclisation subséquente de ces derniers corps à l'aide d'agents déshydratants, la réduction de la double liason 8,9 des composés de formule I, étant réalisé suivant ledit procédé du brevet principal - par exemple, par hydrogénation catalytique, selon les techniques habituelles.



   La présente invention se rapporte à un perfectionnement apporté au procédé selon la revendication du brevet principal et consiste à réduire la double liaison
 8,9 des composés de formule I par hydrogénation ca
 talytique en effectuant celle-ci à un pH aux environs de
 11 en présence d'un catalyseur à base d'hydroxyde de
 palladium.



   La basicité du milieu réactionnel est avantageuse
 ment obtenue par addition à celui-ci de   triéthylamine.   



   Grâce à l'invention, la réduction effectuée au pre
 mier stade devient stéréospécifique et les rendements à
 ce stade sont considérablement augmentés.



   Le nouveau procédé appliqué par exemple au com
 posé I dans lequel Ac = C6H5CO permet d'atteindre
 un rendement de   95 /o    et fournit un produit pur, fa
 cilement cristallisable.



   L'exemple suivant est donné à titre purement indi
 catif et ne présente donc aucun caractère limitatif.



   Exemple
 A. Préparation du   3-méthyl-7-céto-8-(3"-cétobutyl)-3,4-   
   [3'-benzoxy -    cyclopentano   - (2',1')J -      décahydronaphta-   
 lène
 (composé de formule II, Ac =   C6H5CO)   
 On dissout   550mg    de   A8-3-méthyl-7-céto-8-(3"-céto-   
 butyl)-3,4-[3'- benzoxy - cyclopentano - (2',1')] - octahydro
 naphtalène, (composé de formule I, Ac =   CÏHsCO),   
   F = 1170 C,      [a]20 =    + 430   (c=10/o,    méthanol) ob
 tenu comme il a été décrit au brevet principal,

   dans
 40   cm3    d'éthanol à 95   O/o.    La solution est ajoutée à une
 suspension de 40 mg de charbon palladié à 15    /o    d'hy
 droxyde de palladium dans 5 cm  d'alcool. On intro
 duit ensuite une solution alcoolique de triéthylamine à
   10 /o    jusqu'à l'obtention de pH 11, puis on agite sous hydrogène pendant une heure et demie. On filtre, évapore le filtrat à sec sous vide et cristallise le résidu en éther isopropylique. Rendement:   431 mu    (soit   78 0/o)    de   3 - méthyl - 7 - céto-8-(3"-cétobutyl)-3,4-[3'-benzoxy-cy-    clopentano-(2',1')]-décahydronaphtalène, F (instanta  née) = 114 C,   [α]D20    =   +    48  C (c =   1o,    méthanol).



  A partir de la liqueur mère, on peut récupérer encore 17 O/o de produit identique. Ce produit se présente sous forme d'aiguilles incolores, solubles en méthanol et méthanol, insolubles dans   l'eau    et les acides ou alcalis dilués aqueux.

 

  Analyse: C25H32O4 = 396,5   Calculé : C    75,72% H 8,13 o/o   Trouvé : C    75,7 '0/o H 8,2 %
Spectre U.V. (dans l'éthanol):
   7;    max. à   230 m , #    = 14300
   #    max. à 273   ma,    E = 940    t max.  à 280 m , E = 765   
Dispersion rotatoire:   [M]40 =      +    190   [M]150 = -245    [M]317 = - 3480 (minimum)   [M]509 = - 2650 (inflexion)      [M]sso0    = + 290   [M]S87    = 4880 (sommet)
B. Ce produit est ensuite cyclisé de la façon décrite
 au brevet principal par exemple. 



  
 



  Preparation process for 19-nor-testosterone
 According to the process of the main patent, 19-nor-testosterone is obtained by reduction of the compounds A8 -methyl-7-keto-8- (3 "-cétobutyl) -3,4- [3'-acyloxy-cyclopentano- (2 ', 1')] - octahydronaphthalene, of formula I:
EMI1.1
 in which Ac represents the radical of an organic carboxylic acid, in compounds 3-methyl-7-keto-8 (3 "-cétobutyl) -3,4- [3'-acyloxy-cyclopentano- (2 ', 1') ] -decahydronaphthalene corresponding, of formula TT:
EMI1.2
 and by subsequent cyclization of these latter bodies with the aid of dehydrating agents, the reduction of the 8.9 double bond of the compounds of formula I, being carried out according to said process of the main patent - for example, by catalytic hydrogenation, according to usual techniques.



   The present invention relates to an improvement made to the process according to the claim of the main patent and consists in reducing the double bond
 8.9 of the compounds of formula I by hydrogenation ca
 talytic by carrying out this at a pH of around
 11 in the presence of a hydroxide catalyst
 palladium.



   The basicity of the reaction medium is advantageous
 ment obtained by adding triethylamine thereto.



   Thanks to the invention, the reduction carried out in the first
 my stage becomes stereospecific and the yields
 this stage are greatly increased.



   The new process applied for example to the com
 posed I in which Ac = C6H5CO allows to reach
 a yield of 95 / o and provides a pure product, fa
 crystallizable lens.



   The following example is given purely as an indication
 cative and therefore in no way limiting.



   Example
 A. Preparation of 3-methyl-7-keto-8- (3 "-ketobutyl) -3,4-
   [3'-Benzoxy - cyclopentano - (2 ', 1') J - decahydronaphtha-
 lene
 (compound of formula II, Ac = C6H5CO)
 550 mg of A8-3-methyl-7-keto-8- (3 "-keto-
 butyl) -3,4- [3'- benzoxy - cyclopentano - (2 ', 1')] - octahydro
 naphthalene, (compound of formula I, Ac = CÏHsCO),
   F = 1170 C, [a] 20 = + 430 (c = 10 / o, methanol) ob
 held as described in the main patent,

   in
 40 cm3 of 95 O / o ethanol. The solution is added to a
 suspension of 40 mg of palladium on 15 / o hy
 palladium droxide in 5 cm of alcohol. We intro
 then produces an alcoholic solution of triethylamine with
   10 / o until pH 11 is obtained, then stirred under hydrogen for an hour and a half. Filtered, the filtrate evaporated to dryness under vacuum and the residue crystallized from isopropyl ether. Yield: 431 mu (or 78 0 / o) of 3 - methyl - 7 - keto-8- (3 "-ketobutyl) -3,4- [3'-benzoxy-cy- clopentano- (2 ', 1') ] -decahydronaphthalene, F (instantaneous) = 114 C, [α] D20 = + 48 C (c = 1o, methanol).



  From the mother liquor, another 17 O / o of identical product can be recovered. This product is in the form of colorless needles, soluble in methanol and methanol, insoluble in water and dilute aqueous acids or alkalis.

 

  Analysis: C25H32O4 = 396.5 Calculated: C 75.72% H 8.13 o / o Found: C 75.7 '0 / o H 8.2%
U.V. spectrum (in ethanol):
   7; max. at 230 m, # = 14300
   # max. at 273 ma, E = 940 t max. at 280 m, E = 765
Rotary dispersion: [M] 40 = + 190 [M] 150 = -245 [M] 317 = - 3480 (minimum) [M] 509 = - 2650 (inflection) [M] sso0 = + 290 [M] S87 = 4880 (Mountain peak)
B. This product is then cyclized as described.
 to the main patent for example.

 

Claims (1)

REVENDICATION CLAIM Procédé pour la préparation de la 19-nor-testostérone par réduction de la double liaison 8,9 des composés #8-3-méthyl-7-céto-8-(3"-cétobutyl)-3,4-[3'-acyloxy-cyclo- pentano-(2',1')]-octahydronaphtaléniques de formule: EMI2.1 dans laquelle Ac représente le radical acyle d'un acide organique carboxylique, et par cyclisation subséquente des substances ainsi réduites, caractérisé en ce que la réduction est effectuée par hydrogénation en milieu basique, aux environs de pH 11 en présence d'un catalyseur à base d'hydroxyde de palladium. Process for the preparation of 19-nor-testosterone by reduction of the 8,9 double bond of compounds # 8-3-methyl-7-keto-8- (3 "-ketobutyl) -3,4- [3'- acyloxy-cyclopentano- (2 ', 1')] - octahydronaphthalene of the formula: EMI2.1 in which Ac represents the acyl radical of an organic carboxylic acid, and by subsequent cyclization of the substances thus reduced, characterized in that the reduction is carried out by hydrogenation in a basic medium, at around pH 11 in the presence of a base catalyst of palladium hydroxide. SOUS-REVENDICATION Procédé suivant la revendication, caractérisé en ce que le pH basique du milieu réactionnel est obtenu par addition à celui-ci de triéthylamine. SUB-CLAIM Process according to claim, characterized in that the basic pH of the reaction medium is obtained by adding triethylamine thereto.
CH1284561A 1959-08-27 1961-11-06 Preparation process for 19-nor-testosterone CH495345A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR803644A FR1243000A (en) 1959-08-27 1959-08-27 Process for the preparation of 19-nortestosterone and compounds used in this process
FR807570A FR76518E (en) 1959-10-15 1959-10-15 Process for preparing 19-nor-testosterone and compounds used in this process
FR844101A FR79608E (en) 1960-11-16 1960-11-16 Process for the preparation of 19-nor testosterone and compounds used in this process

Publications (1)

Publication Number Publication Date
CH495345A true CH495345A (en) 1970-08-31

Family

ID=27245316

Family Applications (1)

Application Number Title Priority Date Filing Date
CH1284561A CH495345A (en) 1959-08-27 1961-11-06 Preparation process for 19-nor-testosterone

Country Status (1)

Country Link
CH (1) CH495345A (en)

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