(Z)-(4aR,5S,6R,8S,10aS)-8-(tert-Butyl-dimethyl-silanyloxy)-6-((E)-2-methoxy-but-2-enyl)-7,7,10a-trimethyl-1,2,3,4,4a,5,6,7,8,10a-decahydro-benzocycloocten-5-ol 生成
(Z)-(1R,2S,6R,11S)-4-Ethyl-4-hydroxy-7,7,11-trimethyl-3-oxa-tricyclo[9.4.0.02,6]pentadec-9-en-8-one