CH191339A - Process for the preparation of a stereoisomeric alcohol. - Google Patents

Process for the preparation of a stereoisomeric alcohol.

Info

Publication number
CH191339A
CH191339A CH191339DA CH191339A CH 191339 A CH191339 A CH 191339A CH 191339D A CH191339D A CH 191339DA CH 191339 A CH191339 A CH 191339A
Authority
CH
Switzerland
Prior art keywords
preparation
oxy
epi
stereoisomeric
stereoisomeric alcohol
Prior art date
Application number
Other languages
German (de)
Inventor
Gesellschaft Fuer Chemis Basel
Original Assignee
Chem Ind Basel
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 Chem Ind Basel filed Critical Chem Ind Basel
Publication of CH191339A publication Critical patent/CH191339A/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
    • C07J1/0003Androstane derivatives
    • C07J1/0018Androstane derivatives substituted in position 17 beta, not substituted in position 17 alfa
    • C07J1/0022Androstane derivatives substituted in position 17 beta, not substituted in position 17 alfa the substituent being an OH group free esterified or etherified

Description

  

  Verfahren zur Darstellung eines     stereoisomeren    Alkohols.    Im Hauptpatent Nr. 184420 sowie in  seinen Zusatzpatenten sind Verfahren zur  Herstellung     stereoisomerer    gesättigter und       ungesättigter        Diole    beziehungsweise ihrer  Derivate beschrieben, welche dadurch ge  kennzeichnet sind, dass man gesättigte und  ungesättigte     Oxyketone    der     Androstanreihe     beziehungsweise ihrer Derivate mit Reduk  tionsmitteln behandelt.  



  Es wurde nun gefunden, dass man eben  falls zu gesättigten und ungesättigten     Diolen     beziehungsweise ihrer Derivate gelangen kann,  wenn man in     3-Oxy-17-amino-androstanen     oder     -androstenen    beziehungsweise ihren De  rivaten, welche Verbindungen zum Beispiel  aus den oben genannten     Oxyketonen    durch  Reduktion ihrer     Oxime    erhalten werden können,  die     Aminogruppe    zum Beispiel mit salpetriger  Säure in die     Oxygruppe    überführt.  



  Gegenstand des vorliegenden Patentes  bildet ein Verfahren zur Darstellung des im  Hauptpatent Nr. 184420 beschriebenen     3-Epi-          androstandiol-(3,17),    welches dadurch gekenn  zeichnet ist, dass man im 3-epi-Oxy-17-amino-         androstan    die     Aminogruppe    mit salpetriger  Säure in die     Oxygruppe    überführt.  



  <I>Beispiel:</I>  0,5 g     3-epi-Oxy-17-amino-androstan-hydro-          chlorid    werden in warmem Wasser gelöst  und die Lösung mit     Natriumnitrit    versetzt.  Es scheiden sich bald weisse Flocken ab. Man  erwärmt noch einige Stunden im Wasserbad  und     nutscht    dann ab. Das Rohprodukt wird  durch Sublimieren im Hochvakuum bei 140         Badtemperatur    und 0,1 mm Druck gereinigt  und so das im Hauptpatent Nr. 184420     be-          sebriebene        3-epi-Androstandiol    erhalten.  



  An Stelle des Hydrochlorids kann ebenso  gut auch ein anderes Salz Verwendung finden.



  Process for the preparation of a stereoisomeric alcohol. In the main patent no. 184420 and in its additional patents, processes for the production of stereoisomeric saturated and unsaturated diols and their derivatives are described, which are characterized in that saturated and unsaturated oxyketones of the androstane series or their derivatives are treated with reducing agents.



  It has now been found that saturated and unsaturated diols or their derivatives can also be obtained if one rivates which compounds, for example from the above-mentioned oxyketones, into 3-oxy-17-amino-androstanes or -androstenes or their derivatives Reduction of their oximes can be obtained, the amino group converted into the oxy group, for example with nitrous acid.



  The subject of the present patent is a method for the preparation of the 3-epiandrostanediol (3.17) described in the main patent no. 184420, which is characterized in that the amino group in 3-epi-oxy-17-aminoandrostane converted into the oxy group with nitrous acid.



  <I> Example: </I> 0.5 g of 3-epi-oxy-17-amino-androstane hydrochloride are dissolved in warm water and sodium nitrite is added to the solution. White flakes soon separate out. It is heated for a few more hours in a water bath and then filtered off with suction. The crude product is purified by sublimation in a high vacuum at a bath temperature of 140 mm and a pressure of 0.1 mm, and the 3-epi-androstandiol described in main patent no.



  Instead of the hydrochloride, another salt can just as easily be used.

 

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung des im Haupt patent Nr. 184420 beschriebenen 3-Epi-andro- standiols-(3,17), dadurch gekennzeichnet, dass man im 3-epi-Oxy-17-amino-androstan die Aminogruppe mit salpetriger Säure in die Oxygruppe überführt. PATENT CLAIM: Process for the preparation of the 3-epi-andro- standiols- (3.17) described in the main patent no. 184420, characterized in that the amino group in 3-epi-oxy-17-amino-androstane is mixed with nitrous acid in transferred the oxy group.
CH191339D 1936-01-24 1936-01-24 Process for the preparation of a stereoisomeric alcohol. CH191339A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH191339T 1936-01-24

Publications (1)

Publication Number Publication Date
CH191339A true CH191339A (en) 1937-06-15

Family

ID=4437556

Family Applications (1)

Application Number Title Priority Date Filing Date
CH191339D CH191339A (en) 1936-01-24 1936-01-24 Process for the preparation of a stereoisomeric alcohol.

Country Status (1)

Country Link
CH (1) CH191339A (en)

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