Acetic acid (3aS,4aR,8aR,10S)-4a-hydroxy-1-isopropyl-3a,8a-dimethyl-5-methylene-8-oxo-2,3,3a,4,4a,5,6,7,8,8a,9,10-dodecahydro-benzo[f]azulen-10-yl ester 在
二甲基亚砜 作用下,
反应 0.5h,
以70%的产率得到(3aS,4aR,8aR)-4a-Hydroxy-1-isopropyl-3a,8a-dimethyl-5-methylene-3a,4,4a,5,6,7,8a,9-octahydro-3H-benzo[f]azulen-8-one