Steroid ketones

摘要

Cpds. I and II - R = H or opt. subst. (1-6C) alkyl - R' = (2-6C) alkyl - R2 = (2-6C) haloalk-1-ynyl trans with respect to R' - R3 = H, is not > 20C alkyl, or is not > 20C acyl - Q = -CH2- or -CH2CH2- - The substits. at the tert. C atom in ring C are in the trans-anti-trans consign. - Y = H or acyl - a) Gestagens, pituitary gonadotropin blocking agents, hormones. - b) Chemical intermediates.