3β-acetoxy-14,15β-epoxy-5β-pregn-16-en-20-one 在
sodium tetrahydroborate 作用下,
以
甲醇 为溶剂,
反应 2.0h,
以25 g的产率得到Acetic acid (3S,5R,8R,9S,10S,13R,14S,15R,17R)-17-(1-hydroxy-ethyl)-10,13-dimethyl-hexadecahydro-20-oxa-cyclopropa[14,15]cyclopenta[a]phenanthren-3-yl ester