N,N-二甲基氯烯亚胺 、
(3S,5S,8R,9S,10S,13S,14S)-10,13-dimethyl-17-trimethylsilyloxy-2,3,4,5,6,7,8,9,11,12,14,15-dodecahydro-1H-cyclopenta[a]phenanthren-3-ol 以
N,N-二甲基甲酰胺 为溶剂,
以80%的产率得到(3S,5S,8R,9S,10S,13S,14S,16R)-16-[(dimethylamino)methyl]-3-hydroxy-10,13-dimethyl-1,2,3,4,5,6,7,8,9,11,12,14,15,16-tetradecahydrocyclopenta[a]phenanthren-17-one