[2-(tert-butyl-diphenyl-silanyloxymethyl)-5-methoxy-tetrahydro-furan-3-yl]-(4,4,7a-trimethyl-3a,4,5,6,7,7a-hexahydro-3H-inden-1-yl)-methanone

[2-(tert-butyl-diphenyl-silanyloxymethyl)-5-methoxy-tetrahydro-furan-3-yl]-(4,4,7a-trimethyl-octahydro-inden-1-yl)-methanone

tert-butyl-{5-methoxy-3-[1-(4,4,7a-trimethyl-octahydro-inden-1-yl)-vinyl]-tetrahydro-furan-2-ylmethoxy}-diphenyl-silane

tert-butyl-diphenyl-{5-phenylselanyl-3-[1-(4,4,7a-trimethyl-octahydro-inden-1-yl)-vinyl]-tetrahydro-furan-2-ylmethoxy}-silane

trifluoro-methanesulfonic acid 4,4,7a-trimethyl-3a,4,5,6,7,7a-hexahydro-3H-inden-1-yl ester