Acetic acid (2S,4aR,4bS,8aS,9R,10aS)-10a-hydroxy-2,4b,8,8-tetramethyl-2-vinyl-tetradecahydro-phenanthren-9-yl ester 在
lithium aluminium tetrahydride 作用下,
以
乙醚 为溶剂,
生成
(4aS,4bR,7S,8aS,10R,10aS)-1,1,4a,7-Tetramethyl-7-vinyl-dodecahydro-phenanthrene-8a,10-diol