((4aS,5S,8S,8aS)-5-allyl-5,8a-dimethyl-6-methyleneoctahydro-2H-spiro[naphthalene-1,2'-[1,3]dioxolan]-8-yl)trimethylsilane

(1S,4aS)-trans-decahydro-1-α-[(2,3,5,6-tetramethoxyphenyl)methyl]-1β,4aβ-dimethyl-5-(2-methyl-1,3-dioxolan-2-yl)naphthalene-2-one

(3R,4R,4aS,8aS)-3,4,8,8a-Tetramethyl-4-(2-triisopropylsilanyloxy-ethyl)-3,4,4a,5,6,8a-hexahydro-2H-naphthalen-1-one

(2R,3S,4S,4aS,8aS)-2-Hydroxy-3,4,8,8a-tetramethyl-4-(2-triisopropylsilanyloxy-ethyl)-3,4,4a,5,6,8a-hexahydro-2H-naphthalen-1-one

(4aS,5R,6R,8R,8aR)-8-Hydroxy-5,6,8a-trimethyl-5-(2-triisopropylsilanyloxy-ethyl)-octahydro-naphthalen-1-one