(3aR,6aS)-6-Methoxy-2,2-dimethyl-dihydro-furo[3,4-d][1,3]dioxol-4-one

((3aR,5S,6aR)-2,2-dimethyl-4-oxotetrahydro-3aH-cyclopenta[d][1,3]dioxol-5-yl)acetic acid methyl ester

[(3aS,4E,5S,6aR)-4-ethylidene-2,2-dimethyltetrahydro-3aH-cyclopenta[d][1,3]dioxol-5-yl]acetic acid

2-(4{[tert-butyl(dimethyl)silyl]oxy}phenyl)ethanol

[(3aS,4E,5S,6aR)-4-ethylidene-2,2-dimethyltetrahydro-3aH-cyclopenta[d][1,3]dioxol-5-yl]acetic acid methyl ester