(8S,8aS)-8-[2-[(1S,8aS)-5,5,8a-trimethyl-2-methylidene-3,4,4a,6,7,8-hexahydro-1H-naphthalen-1-yl]ethyl]-4,4,8a-trimethyl-7-methylidene-2,3,4a,5,6,8-hexahydro-1H-naphthalene 、 (8S,8aS)-8-[2-[(1S,8aS)-2,5,5,8a-tetramethyl-1,4,4a,6,7,8-hexahydronaphthalen-1-yl]ethyl]-4,4,7,8a-tetramethyl-1,2,3,4a,5,8-hexahydronaphthalene 、 (8S,8aS)-8-[2-[(1S,8aS)-5,5,8a-trimethyl-2-methylidene-3,4,4a,6,7,8-hexahydro-1H-naphthalen-1-yl]ethyl]-4,4,7,8a-tetramethyl-1,2,3,4a,5,8-hexahydronaphthalene 、 (8aS)-8-[2-[(1S,8aS)-5,5,8a-trimethyl-2-methylidene-3,4,4a,6,7,8-hexahydro-1H-naphthalen-1-yl]ethyl]-4,4,7,8a-tetramethyl-1,2,3,4a,5,6-hexahydronaphthalene 生成 (8aS)-8-[2-[(8aS)-2,5,5,8a-tetramethyl-3,4,4a,6,7,8-hexahydronaphthalen-1-yl]ethyl]-4,4,7,8a-tetramethyl-1,2,3,4a,5,6-hexahydronaphthalene