(3R,3aR,4aS,7R,10aS)-3,7,10a-Trimethyl-3-vinyl-dodecahydro-4-oxa-cyclopropa[j]phenanthrene-7-carboxylic acid methyl ester 在
aluminum oxide 作用下,
以
环己烷 为溶剂,
反应 12.0h,
以5%的产率得到(4R,6aS,7S,8R,10aS,11aR)-7-Hydroxy-4,8-dimethyl-8-vinyl-dodecahydro-cyclopropa[e]phenanthrene-4-carboxylic acid methyl ester