| 摘要 |
The invention relates to novel 11,11-alkylidene steroids of the estrane and (19-nor-)pregnane series having a double bond starting from carbon atom 5, the alkylidene group in 11-position having the formula R1 ANGLE C= , R2 wherein R1 and R2 are hydrogen or an alkyl group having 1-2 C-atoms, and to processes for their preparation. |
