methyl (2R,3R,4S,5S)-2,3:5,6-di(O-isopropylidene)-4-O-benzyl-2,3,4,5,6-pentahydroxyhexanoate

(4R,Z)-methyl 4-(benzyloxy)-4-((S)-2,2-dimethyl-1,3-dioxolan-4-yl)but-2-enoate

(2S)-benzyloxy-[(4S)-2,2-dimethyl-[1,3]dioxolan-4-yl]-acetaldehyde

ethyl (2R,3S)-2-O-benzyl-3,4-O-isopropylidene-2,3,4-trihydroxybutanoate