17-(3-dimethylaminoacryloyl)-10,13-dimethyl-1,2,6,7,8,9,10,11,12,13,14,15,16,17-tetradecahydrocyclopenta[a]phenanthren-3-one 、 N-phenylhydrazono α-bromoglyoxylate d'ethyle 在
三乙胺 作用下,
以
苯 为溶剂,
反应 2.0h,
以51%的产率得到ethyl 4-(10,13-dimethyl-3-oxo-2,3,6,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthrene-17-carbonyl-1-phenylpyrazole-3-carboxylate