Toluene-4-sulfonic acid (1R,3aS,4S,5R,7aR)-1-(tert-butyl-dimethyl-silanyloxy)-5-hydroxy-7a-methyl-4-(2-trimethylsilanyl-ethoxymethoxy)-octahydro-inden-4-ylmethyl ester

(R)-1-<(3aR,7S,7aR)-3a-methyl-3,6-dioxohexahydroindan-7-yl>butane-1,4-diol-1-monoacetate

(1aR,1bR,5aR,6aR)-5a-methylhexahydrospiro[indeno[1,2-b]oxirene-3,2'-[1,3]dioxolan]-6(2H)-one

(1aR,1bS,5aR,6S,6aS)-6-((tert-butyldimethylsilyl)oxy)-1b-methyloctahydrocyclopropa[a]inden-3(1H)-one

(1R,5R,7aR)-1-(tert-butyldimethylsilanyloxy)-7a-methyl-2,3,5,6,7,7a-hexahydro-1H-inden-5-ol