1-[(13S,14S,17R)-3,17-dihydroxy-13-methyl-12,14,15,16-tetrahydro-11H-cyclopenta[a]phenanthren-17-yl]-2-hydroxyethanone 在
sodium tetrahydroborate 作用下,
生成
(13S,14S,17R)-17-(1,2-Dihydroxy-ethyl)-13-methyl-12,13,14,15,16,17-hexahydro-11H-cyclopenta[a]phenanthrene-3,17-diol