(2S,3S,4S,5S)-2,3:5,6-di(O-isopropylidene)-4-O-benzyl-2,3,4,5,6-pentahydroxyhexanal

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

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

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

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