(4aS,5S,8S,8aS)-(+)-3,4,4a,5,6,7,8,8a-octahydro-5-(2-hydroxyethyl)-6-methenyl-5,8a-dimethyl-8-trimethylsilylnaphthalen-1(2H)-one 1-(ethylene acetal)

(4aS)-1,4aβ-dimethyl-4,4a,7,8-tetrahydronaphthalene-2,5(3H,6H)-dione-5-ethyeneacetal

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

(4aS,5S,8S,8aS)-5-(2-Hydroxy-ethyl)-5,8a-dimethyl-6-methylene-8-trimethylsilanyl-octahydro-naphthalen-1-one

(4aS,5S,8S,8aS)-(+)-3,4,4a,7,8,8a-hexahydro-5,8a-dimethyl-5-(2-propenyl)-8-trimethylsilylnaphthalene-1,6(2H,5H)-dione 1-(ethylene acetal)