Acetic acid (4aR,4bR,7S,8aR,10aS)-8a-hydroxy-1,1,7-trimethyl-9-oxo-7-vinyl-dodecahydro-phenanthren-4a-ylmethyl ester 在
jones reagent 作用下,
以
丙酮 为溶剂,
以97%的产率得到((1R,2S,1'R,4'S)-1-Acetoxymethyl-3,3,4'-trimethyl-2'-oxo-4'-vinyl-bicyclohexyl-2-yl)-acetic acid