JPS5793999A - Preparation of delta11 unsaturated steroid - Google Patents
Preparation of delta11 unsaturated steroidInfo
- Publication number
- JPS5793999A JPS5793999A JP16914080A JP16914080A JPS5793999A JP S5793999 A JPS5793999 A JP S5793999A JP 16914080 A JP16914080 A JP 16914080A JP 16914080 A JP16914080 A JP 16914080A JP S5793999 A JPS5793999 A JP S5793999A
- Authority
- JP
- Japan
- Prior art keywords
- compound
- steroid
- delta11
- preparation
- salt
- Prior art date
- Legal status (The legal status 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 status listed.)
- Granted
Links
Landscapes
- Steroid Compounds (AREA)
Abstract
PURPOSE: To prepare the titled steroid useful as an intermediate of a gallstone- dissolving agent, etc., by the desulfonation reaction of a steroid compound having an alkyl-sulfonyl group in the presence of a specific metal salt and a quaternary ammonium salt.
CONSTITUTION: The objective compound is prepared by the desulfonation reaction of a steriod compound having an alkylsulfonyl group at the 12-position in the presence of (A) an alkali or alkaline earth metal bicarbonate (e.g. potassium bicarbonate) and (B) a quaternary ammonium salt (e.g. trioctylammonium chloride), a quaternary phosphonium salt and/or a crown ether, pref. in a solvent such as xylene, at 110W130°C for 4W15hr.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16914080A JPS5793999A (en) | 1980-12-02 | 1980-12-02 | Preparation of delta11 unsaturated steroid |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16914080A JPS5793999A (en) | 1980-12-02 | 1980-12-02 | Preparation of delta11 unsaturated steroid |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5793999A true JPS5793999A (en) | 1982-06-11 |
JPS6221358B2 JPS6221358B2 (en) | 1987-05-12 |
Family
ID=15881019
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16914080A Granted JPS5793999A (en) | 1980-12-02 | 1980-12-02 | Preparation of delta11 unsaturated steroid |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5793999A (en) |
-
1980
- 1980-12-02 JP JP16914080A patent/JPS5793999A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS6221358B2 (en) | 1987-05-12 |
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