(8R,9S,13S,14S)-17-[1-Azido-meth-(E)-ylidene]-3-methoxy-13-methyl-4,6,7,8,9,11,12,13,14,15,16,17-dodecahydro-1H-cyclopenta[a]phenanthrene 在
三苯基膦 作用下,
以
苯 为溶剂,
生成
(8S,9S,13S,14S,17S)-3-Methoxy-13-methyl-4,6,7,8,9,11,12,13,14,15,16,17-dodecahydro-1H-cyclopenta[a]phenanthrene-17-carbaldehyde