JPS5793999A - Preparation of delta11 unsaturated steroid - Google Patents

Preparation of delta11 unsaturated steroid

Info

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
Application number
JP16914080A
Other languages
Japanese (ja)
Other versions
JPS6221358B2 (en
Inventor
Isamu Taguchi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Resonac Holdings Corp
Original Assignee
Showa Denko KK
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 Showa Denko KK filed Critical Showa Denko KK
Priority to JP16914080A priority Critical patent/JPS5793999A/en
Publication of JPS5793999A publication Critical patent/JPS5793999A/en
Publication of JPS6221358B2 publication Critical patent/JPS6221358B2/ja
Granted legal-status Critical Current

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
JP16914080A 1980-12-02 1980-12-02 Preparation of delta11 unsaturated steroid Granted JPS5793999A (en)

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)

Also Published As

Publication number Publication date
JPS6221358B2 (en) 1987-05-12

Similar Documents

Publication Publication Date Title
JPS52156844A (en) Preparation of 8-amino-1-naphthol-3,6-disulfonic acid
JPS5793999A (en) Preparation of delta11 unsaturated steroid
JPS5430102A (en) Carbon-carbon bond formation
JPS52285A (en) Preparation of n1 *22tetrahydrofuryl**55fluorouracil
JPS52156803A (en) Reaction process
JPS52143285A (en) Stabilization of cholesterol-oxydase
JPS5210226A (en) Process for preparation of aromatic hydroxy compound
JPS5321516A (en) Fixing structure of deflecting yoke
JPS5381633A (en) Sublimable composition
JPS5433997A (en) Concentrating method of tritium
JPS5397964A (en) Preparation of electric welded steel tube
JPS53124221A (en) Preparation of phosphoroamidate having hydroxyalkyl group
JPS5371055A (en) Preparation of steroid derivs.
JPS541600A (en) System of varying attitude of artificial satellite
JPS5244793A (en) Refinement of caustic alkali containing fluorine compound
JPS5350286A (en) Preparatin of sodium polyacrylate powder
JPS52127167A (en) Etching method
JPS527950A (en) Preparation of ursodeoxycholic acid
JPS5392759A (en) Preparation of phthalonitrile derivatives
JPS57202374A (en) Soil hardening agent
JPS5323908A (en) Preparation of sodium alkoxide
JPS52111509A (en) Preparation of unsaturated compounds
JPS559017A (en) Second permanent wave agent
JPS5216797A (en) Float
JPS5239999A (en) Method for using by-product aluminum hydroxide as fire-retarding agent