(3R)-3-[(7R,8S,9S,10R,13R,14S,17R)-7-acetyloxy-10,13-dimethyl-3-oxo-1,2,6,7,8,9,11,12,14,15,16,17-dodecahydrocyclopenta[a]phenanthren-17-yl]butanoic acid 、
(1R)-1-(5-bromothiophen-2-yl)-2-methylpropan-1-amine 在
TATU 、
N,N-二异丙基乙胺 作用下,
以
N,N-二甲基甲酰胺 为溶剂,
生成 [(7R,8S,9S,10R,13R,14S,17R)-17-[(2R)-4-[[(1R)-1-(5-bromothiophen-2-yl)-2-methylpropyl]amino]-4-oxobutan-2-yl]-10,13-dimethyl-3-oxo-1,2,6,7,8,9,11,12,14,15,16,17-dodecahydrocyclopenta[a]phenanthren-7-yl] acetate 、 (3R)-N-[(1R)-1-(5-bromothiophen-2-yl)-2-methylpropyl]-3-[(7R,8S,9S,10R,13R,14S,17R)-7-hydroxy-10,13-dimethyl-3-oxo-1,2,6,7,8,9,11,12,14,15,16,17-dodecahydrocyclopenta[a]phenanthren-17-yl]butanamide