(3aS,4S,5R,6R,6aR)-6-ethenyl-tetrahydro-2,2-dimethyl-4H-cyclopenta[d]-1,3-dioxole-4,5-diol 5-methanesulfonate

(3aS,4R,6aR)-3a,6a-dihydro-4-[(methoxycarbonyl)oxy]-2,2-dimethyl-4H-cyclopenta[d]-1,3-dioxole-6-carboxaldehyde

(3aS,4R,6aR)-3a,6a-dihydro-4-[(methoxycarbonyl)oxy]-2,2-dimethyl-4H-cyclopenta[d]-1,3-dioxole-6-methanol

(3aR,4S,5R,6R,6aR)-6-ethenyl-tetrahydro-2,2-dimethyl-4H-cyclopenta[d]-1,3-dioxole-4,5-diol 5-methanesulfonate 4-(methyl carbonate)

(3aS,4R,6aR)-6-{{[(1,1-dimethylethyl)dimethylsilyl]oxy}methyl}-3a,6a-dihydro-2,2-dimethyl-4H-cyclopenta[d]-1,3-dioxol-4-ol methyl carbonate