Document Type and Number:
Japanese Patent JPS6355520
Kind Code:
B2
Abstract:
A new process for the preparation of 17 beta -hydroxy-3-oxo-17 alpha -pregn-4-ene-21-carboxylic acid gamma -lactone is described herein. The process makes use of androst-4-ene-3,17-dione as the starting material and 17 alpha -ethynyl-17 beta -hydroxyandrost-4-en-3-one as an early intermediate.
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Inventors:
HYUU RATEIMAA DORAIDEN JUNIA
MAIKU GUSUTO SUKAROSU
TOOMASU JON TERINSUKII
MAIKU GUSUTO SUKAROSU
TOOMASU JON TERINSUKII
Application Number:
JP978987A
Publication Date:
November 02, 1988
Filing Date:
January 19, 1987
Export Citation:
Assignee:
SEARLE & CO
International Classes:
C04B16/02; C07J1/00; C07J21/00; C07J43/00
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