3β-benzoyloxy-5α,6β-dichlorocholestane 在
chromyl trifluoroacetate 作用下,
以
四氯化碳 为溶剂,
反应 4.0h,
以56%的产率得到[(3S,5R,6R,8S,9S,10R,13R,14S,17R)-5,6-dichloro-17-[(2R)-6-hydroxy-6-methylheptan-2-yl]-10,13-dimethyl-1,2,3,4,6,7,8,9,11,12,14,15,16,17-tetradecahydrocyclopenta[a]phenanthren-3-yl] benzoate