Acetic acid (7S,8R,9S,13S,14S,17S)-7-(4-bromo-phenylsulfanyl)-3-hydroxy-13-methyl-6-oxo-7,8,9,11,12,13,14,15,16,17-decahydro-6H-cyclopenta[a]phenanthren-17-yl ester 在
sodium tetrahydroborate 作用下,
以
乙醇 为溶剂,
生成 Acetic acid (6R,7S,8R,9S,13S,14S,17S)-7-(4-bromo-phenylsulfanyl)-3,6-dihydroxy-13-methyl-7,8,9,11,12,13,14,15,16,17-decahydro-6H-cyclopenta[a]phenanthren-17-yl ester