2,3-epoxy-1,2,3,4,4aβ,5,6,7,8,8a-decahydro-3-<2-(4-methoxybenzocyclobutenyl)>-8aβ-methyl-1-oxo-6α-<(tetrahydropyranyl)oxy>naphthalene

(+)-(4aR,8aS)-1,2,3,4,4aβ,5,6,7,8,8a-decahydro-1,1-(1,2-ethylenedioxy)-8aβ-methyl-6-oxonaphthalene

(+)-(4aR,6R,8aS)-6α-acetoxy-1,2,3,4,4aβ,5,6,7,8,8a-decahydro-1,1-(1,2-ethylenedioxy)-8aβ-methylnaphthalene

1,2,3,4,4aβ,5,6,7,8,8a-decahydro-6α-hydroxy-3-<2-(4-methoxybenzocyclobutenyl)>-8aβ-methyl-1-oxonaphthalene

1,4,4aβ,5,6,7,8,8a-octahydro-6α-hydroxy-3-<2-(4-methoxybenzocyclobutenyl)>-8aβ-methyl-1-oxonaphthalene