CH245274A - Process for the preparation of a new compound of the cyclopentanopolyhydrophenanthrene series. - Google Patents

Process for the preparation of a new compound of the cyclopentanopolyhydrophenanthrene series.

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Publication number
CH245274A
CH245274A CH245274DA CH245274A CH 245274 A CH245274 A CH 245274A CH 245274D A CH245274D A CH 245274DA CH 245274 A CH245274 A CH 245274A
Authority
CH
Switzerland
Prior art keywords
acetoxy
dione
preparation
new compound
split
Prior art date
Application number
Other languages
German (de)
Inventor
Reichstein Tadeus Dr Prof
Original Assignee
Reichstein Tadeus Dr Prof
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 Reichstein Tadeus Dr Prof filed Critical Reichstein Tadeus Dr Prof
Publication of CH245274A publication Critical patent/CH245274A/en

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Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07JSTEROIDS
    • C07J9/00Normal steroids containing carbon, hydrogen, halogen or oxygen substituted in position 17 beta by a chain of more than two carbon atoms, e.g. cholane, cholestane, coprostane
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07JSTEROIDS
    • C07J3/00Normal steroids containing carbon, hydrogen, halogen or oxygen, substituted in position 17 beta by one carbon atom
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07JSTEROIDS
    • C07J5/00Normal steroids containing carbon, hydrogen, halogen or oxygen, substituted in position 17 beta by a chain of two carbon atoms, e.g. pregnane and substituted in position 21 by only one singly bound oxygen atom, i.e. only one oxygen bound to position 21 by a single bond
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07JSTEROIDS
    • C07J7/00Normal steroids containing carbon, hydrogen, halogen or oxygen substituted in position 17 beta by a chain of two carbon atoms
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07JSTEROIDS
    • C07J75/00Processes for the preparation of steroids in general

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  • 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)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Steroid Compounds (AREA)

Description

  

  Verfahren zur Herstellung einer neuen Verbindung der       Cyclopentanopolyhydr        ophenanthr        en-RReihe.       Es wurde gefunden, dass man zu einer im  Ring C     ungesättigten    Verbindung der     Cyclo-          pentanopolyhydrophenanthren-Reihe    gelan  gen kann,     wenn.    man     ein        21-Acetoxy-pregnan-          d,20-dion,

      das     im    Ring C in     12-Stellung        einen          zusammen    mit     einem    benachbarten Wasser  stoffatom     abspaltbaren        _Substituenten    auf  weist, mit     diesen        Substituenten    unter     Bil-          dung    einer     Doppelbindung    abspaltenden Mit  teln behandelt.  



  Der     12ständige,        zusammen    mit einem be  nachbarten Wasserstoffatom     abspaltbare        Sub-          stituent    des     Ausgangsstoffes        kann        eine    freie       Hydroxylgruppe    oder eine beispielsweise  durch     Carbonsäuren,    wie Essig-,     Propion-          oder        Benzoesäure,    durch     Sulfonsäure,

      Ha  logenwasserstoffsäuren oder     Xanthogensäuren     veresterte     Hydroxylgruppe        sein.     



  Die Abspaltung dieses     Substituenten     unter     Bildung    einer Doppelbindung kann mit  den für diese Reaktion an sich     bekannten     Mitteln erfolgen. Beispielsweise lässt sich     eine       freie     Hydroxylgruppe    unter der     Einwirkung     von     Mineralsäuren,    vorzugsweise in     Lösungs-          mitteln,    wie Eisessig, Alkohol,     Dioxan    und       dergleichen.,    von     Phosphoroxychlorid,        'Bisul-          faten,    von Ameisensäure,

       Oxalsäure,    von       Säureanhydriden,    wie     Acetanhydrid    oder       Phosphorpentoxyd,    oder durch die Einwir  kung von Katalysatoren, wie Jod- oder     Car-          bonsäure-Salzen,    abspalten.

   Eine     veresterte          Hydroxylgruppe        wird    ausser durch die ge  nannten     Mittel        vorzugsweise    auch     mit        Al-          kalien.    Erdalkalien,     Carbonaten,        organischen     Basen, wie     Pyridin,        Dimethylanilin        usw.,    ab  gespalten.

   An Stelle oder     in        Kombination    mit  den genannten     Mitteln    lässt sich auch erhöhte  Temperatur     und/oder    verminderter Druck an  wenden. Gegebenenfalls arbeitet man auch in  Gegenwart     indifferenter    Gase. Statt aus     Na-          logenwasserstoffsäureestern    direkt- Halogen  wasserstoff abzuspalten, kann man das Ha  logen auch in bekannter Weise durch     einen          quaternären        Ammoniumrest    ersetzen     und     diesen abspalten.

        Das neue     Verfahrensprodukt,    das     dll,1s_21-          Acetoxy-pregnen-3,20-dion    vom F.151-152 ,  soll therapeutische Verwendung finden oder  als     Zwischenprodukt    zur Herstellung thera  peutisch wertvoller Produkte dienen.  



       Beispiel:     1 Teil     12ss-Tosyloxy-21-acetoxy-pregnan-          3,20-dion        (erhalten    aus     3a,12,6-Dioxy-ätio-          cholansäure    vom F. 297  durch     Acetylierung     zur     3a,12,8    -     Diacetoxy    -     ätiocholansäure    vom  F.

   202-204 , Umsetzung zunächst mit     Thio-          nylchlorid,    dann mit     Diazomethan    und nach  folgende     Verseifung    zum     3a,12ss-Dioxy-21-          diazo-pregnan-20-on,        Überführung    mittels  Eisessig in 3a,12ss-Dioxy-21-acetoxy-pregnan-         20-on    vom F. 149.5-150,5 , Oxydation mit  tels     Aluminiumphenolat    und Aceton zum       12ss-Oxy-21-acetoxy-pregnan-3,20-diou,    das  schliesslich mit.

       Tosylchlorid    in     Pyridin        ver-          estert    wird) wird mit 20 Teilen     Collidin     5 Stunden unter     Rückfluss    gekocht. Das     Colli-          din    wird im Vakuum     abdestilliert,    der Rück  stand in Äther aufgenommen, die ätherische  Lösung mit verdünnter Salzsäure,     Sodalösung     und Wasser gewaschen, getrocknet und ein  gedampft.

   Das erhaltene gelbe Rohprodukt  liefert bei der     Chromatographie    über 12  Teile Aluminiumoxyd und der     Elution    mit       Benzol-Äther    (9 :1) das     dll.l2_21_Acetoxy-          pregnen-3,20-dion    der Formel  
EMI0002.0040     
    in Form farbloser     Prismen,    die aus     Äther-          Petroläther    umkristallisiert bei 151-152   schmelzen.  



  An Stelle von     Collidin    kann z. B. auch       Pyridin        verwendet    werden.



  Process for the preparation of a new compound of the Cyclopentanopolyhydr ophenanthren-R series. It has been found that a compound of the cyclopentanopolyhydrophenanthrene series which is unsaturated in the ring C can be obtained if. one a 21-acetoxy-pregnan- d, 20-dione,

      which has a substituent which can be split off together with an adjacent hydrogen atom in the 12-position in ring C, treated with agents which split off these substituents to form a double bond.



  The 12-position substituent of the starting material which can be split off together with an adjacent hydrogen atom can be a free hydroxyl group or a, for example, by carboxylic acids, such as acetic, propionic or benzoic acid, by sulfonic acid,

      Hydrogen halide acids or xanthogenic acids esterified hydroxyl group.



  The splitting off of this substituent with the formation of a double bond can take place with the means known per se for this reaction. For example, a free hydroxyl group can be removed under the action of mineral acids, preferably in solvents such as glacial acetic acid, alcohol, dioxane and the like, of phosphorus oxychloride, bisulfates, formic acid,

       Oxalic acid, from acid anhydrides such as acetic anhydride or phosphorus pentoxide, or by the action of catalysts such as iodine or carboxylic acid salts, split off.

   An esterified hydroxyl group is preferably also with alkalis in addition to the means mentioned. Alkaline earths, carbonates, organic bases such as pyridine, dimethylaniline, etc., split off.

   Instead of or in combination with the agents mentioned, it is also possible to use increased temperature and / or reduced pressure. You may also work in the presence of inert gases. Instead of splitting off hydrogen halide directly from hydrofluoric acid esters, the halogen can also be replaced in a known manner by a quaternary ammonium radical and split off.

        The new process product, the dll, 1s_21-acetoxy-pregnen-3,20-dione from F.151-152, is intended to find therapeutic use or serve as an intermediate in the manufacture of therapeutically valuable products.



       Example: 1 part of 12ss-tosyloxy-21-acetoxy-pregnan- 3,20-dione (obtained from 3a, 12,6-dioxy-ethio-cholanic acid from F. 297 by acetylation to 3a, 12,8-diacetoxy-ethiocholanic acid from F.

   202-204, reaction first with thionyl chloride, then with diazomethane and after subsequent saponification to give 3a, 12ss-dioxy-21-diazo-pregnan-20-one, conversion using glacial acetic acid into 3a, 12ss-dioxy-21-acetoxy-pregnane - 20-one from F. 149.5-150.5, oxidation with means of aluminum phenolate and acetone to 12ss-Oxy-21-acetoxy-pregnan-3,20-diou, which is finally with.

       Tosyl chloride is esterified in pyridine) is refluxed with 20 parts of collidine for 5 hours. The collidin is distilled off in vacuo, the residue is taken up in ether, the ethereal solution is washed with dilute hydrochloric acid, soda solution and water, dried and evaporated.

   Chromatography over 12 parts of aluminum oxide and elution with benzene ether (9: 1) gives the yellow crude product obtained the dll.l2_21_Acetoxypregnen-3,20-dione of the formula
EMI0002.0040
    in the form of colorless prisms which, recrystallized from ether-petroleum ether, melt at 151-152.



  Instead of collidine, for. B. pyridine can also be used.

 

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung einer im Ring C ungesättigten Verbindung der Cyclopen- tunopolyhydrophenanthren-Reihe, dadurch ge- kennzeichnet, dass man ein 21-Acetoxy- pregnan-3,20-dion, das im Ring C in 12-Stel- lung einen zusammen mit einem benachbar ten Wasserstoffatom abspaltbaren Substi- tuenten aufweist, PATENT CLAIM: Process for the production of a compound of the Cyclopen- tunopolyhydrophenanthrene series which is unsaturated in ring C, characterized in that a 21-acetoxy-pregnane-3,20-dione, the one in ring C in the 12-position, is put together has substituents that can be split off with an adjacent hydrogen atom, mit diesen Substituenten unter Bildung einer Doppelbindung abspal tenden Mitteln behandelt. Das neue Verfahrensprodukt, das dl1,12_21- Acetoxy-pregnen-3,20-dion vom F.151-152 , soll therapeutische Verwendung finden oder als Zwischenprodukt zur Herstellung thera peutisch wertvoller Produkte dienen. UNTERANSPRUCH: Verfahren nach Patentanspruch, dadurch gekennzeichnet, da.ss man als Ausgangsstoff 12fl-Tosyloxy - 21- acetoxy -pregnan-3,20-dion verwendet. treated with these substituents to form a double bond cleaving agents. The new process product, the dl1,12_21-acetoxy-pregnen-3,20-dione from F.151-152, is to find therapeutic use or serve as an intermediate for the production of therapeutically valuable products. SUBCLAIM: Process according to claim, characterized in that 12fl-tosyloxy-21-acetoxy -pregnane-3,20-dione is used as the starting material.
CH245274D 1941-03-21 1941-03-21 Process for the preparation of a new compound of the cyclopentanopolyhydrophenanthrene series. CH245274A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH245274T 1941-03-21
CH240789T 1942-01-28

Publications (1)

Publication Number Publication Date
CH245274A true CH245274A (en) 1946-10-31

Family

ID=25728539

Family Applications (1)

Application Number Title Priority Date Filing Date
CH245274D CH245274A (en) 1941-03-21 1941-03-21 Process for the preparation of a new compound of the cyclopentanopolyhydrophenanthrene series.

Country Status (1)

Country Link
CH (1) CH245274A (en)

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