Acetic acid (5S,10S,13S,14S,17S)-10,13-dimethyl-3,11-dioxo-2,3,4,5,6,7,10,11,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-17-yl ester 在
lead(IV) acetate 作用下,
以
二氯甲烷 为溶剂,
生成
Acetic acid (1S,3aR,6aS,10aS,13aS)-10a,13a-dimethyl-4,8,11,12-tetraoxo-hexadecahydro-benzo[a]cyclopenta[f]cyclodecen-1-yl ester