[4-(3-acetyloxy-3-methylpent-4-enyl)-4a,8,8-trimethyl-3-methylidene-2,4,5,6,7,8a-hexahydro-1H-naphthalen-1-yl] acetate 在
chromium(VI) oxide 、 potassium dichromate 作用下,
生成
(4S,4aR)-4a,8,8-Trimethyl-3-methylene-4-(3-oxo-butyl)-octahydro-naphthalen-1-one