Nonanoic acid ((8R,9S,13S,14S,17S)-3-methoxy-13-methyl-7,8,9,11,12,13,14,15,16,17-decahydro-6H-cyclopenta[a]phenanthren-17-yl)-amide 在
三溴化硼 作用下,
以
二氯甲烷 为溶剂,
反应 2.5h,
以90%的产率得到Nonanoic acid ((8R,9S,13S,14S,17S)-3-hydroxy-13-methyl-7,8,9,11,12,13,14,15,16,17-decahydro-6H-cyclopenta[a]phenanthren-17-yl)-amide