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

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

(4aS,5S,8aS)-5-(2-hydroxyethyl)-5,8a-dimethyloctahydro-2H-spiro[naphthalene-1,2'-[1,3]dioxolan]-6-ol

(4aS,5S,8aS)-5,8a-dimethyl-5-(2-((triisopropylsilyl)oxy)ethyl)octahydro-2H-spiro[naphthalene-1,2'-[1,3]dioxolan]-6-ol

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