(+/-)-2,2-dimethyl-3αβ,6αβ-dihydro-4H-cyclopenta-1,3-dioxol-4-one

(1S,4S,5S)-(+)-4,5-O-isopropylidene-1-hydroxymethyl-2-cyclopenten-1-ol

(1R,4S,5S)-(+)-4,5-O-isopropylidene-1-hydroxymethyl-2-cyclopenten-1-ol

(3aR,6R,6aR)-6-((tert-butyldimethylsilyloxy)methyl)-2,2-dimethyl-tetrahydrofuro[3,4-d][1,3]dioxol-4-ol

(1R,4'R,5'S)-(-)-1-(2',2'-dimethyl-5'-vinyl-1',3'-dioxolan-4'-yl)-2-(tert-butyldimethylsilyloxy)-1(R)-ethan-1-ol