Process for the preparation of 17.beta.-hydroxy-3-oxo-17.alpha.-

Details Process for the preparation of 17.beta.-hydroxy-3-oxo-17.alpha.- Process for the preparation of 17.beta.-hydroxy-3-oxo-17.alpha.-

1976-08-30

1977-11-08

Roberts, Elbert L.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

26023957, 2602395, C07J 2100

Patent

active

040575420

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.

REFERENCES:
patent: 3474115 (1969-10-01), Buzby, Jr. et al.
patent: 3758517 (1973-09-01), Edwards
Rec. Trav. Chem. (7) vol. 88, (1969) pp. 752-765.

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