1-[(3R,3aR,5aS,6R,7R,9aS,9bS)-6-((R)-2-Benzyloxy-3-isopropenyl-4-methyl-pent-3-enyl)-3-((R)-1,5-dimethyl-hexyl)-3a,6-dimethyl-dodecahydro-cyclopenta[a]naphthalen-7-yl]-propenone 生成 (1R,3aS,3bS,5aR,6aS,10aR,11aR,11bS,13aR)-1-((R)-1,5-Dimethyl-hexyl)-10-isopropenyl-9,11a,13a-trimethyl-1,2,3,3a,3b,4,5,5a,6a,7,8,10a,11,11a,11b,12,13,13a-octadecahydro-indeno[5,4-a]anthracen-6-one