(S)-1-Furan-3-yl-2-[(1S,2R,5S,8aS)-1,2,5-trimethyl-5-(4-methyl-pent-4-enyl)-1,2,3,5,6,7,8,8a-octahydro-naphthalen-1-yl]-ethanol 在
氧气 、 rose bengal 、
N,N-二异丙基乙胺 作用下,
以
二氯甲烷 为溶剂,
以75%的产率得到5-Hydroxy-4-{(S)-1-hydroxy-2-[(1S,2R,5S,8aS)-1,2,5-trimethyl-5-(4-methyl-pent-4-enyl)-1,2,3,5,6,7,8,8a-octahydro-naphthalen-1-yl]-ethyl}-5H-furan-2-one