氰甲基磷酸二乙酯 、
(8R,9S,13S,14S,17S)-2,3-Bis-benzyloxy-17-hydroxy-13-methyl-7,8,9,11,12,13,14,15,16,17-decahydro-cyclopenta[a]phenanthren-6-one 在
sodium hydride 作用下,
以
四氢呋喃 为溶剂,
生成 [(8R,9S,13S,14S,17S)-2,3-Bis-benzyloxy-17-hydroxy-13-methyl-7,8,9,11,12,13,14,15,16,17-decahydro-cyclopenta[a]phenanthren-(6E)-ylidene]-acetonitrile