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
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07J—STEROIDS
- C07J1/00—Normal steroids containing carbon, hydrogen, halogen or oxygen, not substituted in position 17 beta by a carbon atom, e.g. estrane, androstane
- C07J1/0003—Androstane derivatives
- C07J1/0018—Androstane derivatives substituted in position 17 beta, not substituted in position 17 alfa
- C07J1/0022—Androstane 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)
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) |
-
1936
- 1936-01-24 CH CH191339D patent/CH191339A/en unknown
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