rac-((1R,3S,3aR,4R,6aS)-4-(benzyloxy)-1-(hydroxymethyl)-5,5-dimethylhexahydro-1H-spiro[pentalene-2,2'-[1,3]dioxolan]-3-yl)methyl pivalate

3,3-(ethylenedioxy)-2β-(trimethylacetoxymethyl)-6α-benzyloxy-4β,7,7-trimethyl-1α,5α-bicyclo<3.3.0>octane

3,3-(ethylenedioxy)-2β-(trimethylacetoxymethyl)-4β-(hydroxymethyl)-6α-benzyloxy-7,7-dimethyl-1α,5α-bicyclo<3.3.0>octane

rac-((1R,3R,3aS,6R,6aR)-6-(benzyloxy)-1-(iodomethyl)-5,5-dimethylhexahydro-1H-spiro[pentalene-2,2'-[1,3]dioxolan]-3-yl)methyl pivalate