甲基膦酸二甲酯

(3aS,6aS)-6-methoxy-2,2-dimethyl-3a,6a-dihydro-4H-cyclopenta[d][1,3]dioxol-4-ol

(3aR,6aR)-6-methoxy-2,2-dimethyl-3aH-cyclopenta[d][1,3]dioxol-4(6aH)-one

(4S,5R)-methyl 2,2-dimethyl-5-(2-(triphenylphosphoranylidene)acetyl)-1,3-dioxolane-4-carboxylate