JPS5767599A - Preparation of 5-beta-choleic acid derivative - Google Patents
Preparation of 5-beta-choleic acid derivativeInfo
- Publication number
- JPS5767599A JPS5767599A JP14156180A JP14156180A JPS5767599A JP S5767599 A JPS5767599 A JP S5767599A JP 14156180 A JP14156180 A JP 14156180A JP 14156180 A JP14156180 A JP 14156180A JP S5767599 A JPS5767599 A JP S5767599A
- Authority
- JP
- Japan
- Prior art keywords
- ester
- diacyloxy
- hydroxy
- cholanic
- beta
- 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.)
- Pending
Links
Landscapes
- Steroid Compounds (AREA)
Abstract
PURPOSE: To obtain the titled compound useful as an intermediate for synthesizing a solubilizer for gallstone industrially advantageously, by reacting a diacyloxy-hydroxy-cholanic ester with phosphorus trichloride in the presence of a tertiary amine.
CONSTITUTION: A 3α,7α-diacyloxy-12-hydroxy-5β-cholanic ester (e.g., 3α,7α-diacetoxy-12-hydroxy-5β-cholanic acid methyl ester. etc.) shown by the formulaI(R is lower alkyl; X is acyl) is reacted with phosphorus trichloride in a molar amount preferably 1W1.2 times as much as that of the compound in the presence of a tertiary amine (preferably α-picoline, etc.) occasionally in an inert solvent, e.g., dichloroethane, etc. at 120W150°C, to give the desired 3α,7α-diacyloxy-5β-11-choleic ester shown by the formula II.
EFFECT: By-products, e.g., compounds related to hydrazine are not prepared.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14156180A JPS5767599A (en) | 1980-10-09 | 1980-10-09 | Preparation of 5-beta-choleic acid derivative |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14156180A JPS5767599A (en) | 1980-10-09 | 1980-10-09 | Preparation of 5-beta-choleic acid derivative |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5767599A true JPS5767599A (en) | 1982-04-24 |
Family
ID=15294824
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14156180A Pending JPS5767599A (en) | 1980-10-09 | 1980-10-09 | Preparation of 5-beta-choleic acid derivative |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5767599A (en) |
-
1980
- 1980-10-09 JP JP14156180A patent/JPS5767599A/en active Pending
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