A-NOR STEROIDS

摘要

1275283 A-Norsteroids E R SQUIBB & SONS Inc 17 March 1969 43022/71 Divided out of 1275282 Heading C2C [Also in Division C5] The invention comprises compounds of formula (wherein R is H or acyl and R1 is C 1-8 alkyl) and their preparation from the corresponding 1- unsubstituted-2-oxo-A-norsteroids by reaction with an alkyl formate and an alkali metal hydride. Conversion of the inventive compounds into pyrazolo derivatives is as described in Specification 1275282.