((6S,8R,9S,13S,14S)-3-Hydroxy-13-methyl-17-oxo-7,8,9,11,12,13,14,15,16,17-decahydro-6H-cyclopenta[a]phenanthren-6-yloxy)-acetic acid 在
sodium tetrahydroborate 作用下,
以
甲醇 为溶剂,
反应 1.0h,
以87%的产率得到((6S,8R,9S,13S,14S,17S)-3,17-Dihydroxy-13-methyl-7,8,9,11,12,13,14,15,16,17-decahydro-6H-cyclopenta[a]phenanthren-6-yloxy)-acetic acid