3β-acetoxy-17-<5R-(3,5-dimethyl-2-isoxazolin-5-yl)>androst-5-ene 在
dimsyl sodium 作用下,
以
二甲基亚砜 为溶剂,
反应 6.0h,
以92%的产率得到Acetic acid (3S,8S,9S,10R,13S,14S,17R)-17-{(E)-3-[(E)-hydroxyimino]-1-methyl-but-1-enyl}-10,13-dimethyl-2,3,4,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-3-yl ester