(3aR,4R,5R,6R,7aS)-6-benzoxy-4,5-dihydroxycyclopent<d>oxazolidin-5-one

(1R,2S,3R)-1-O-benzyl-2,3-O-isopropylidenecyclopent-4-ene-1,2,3,4-tetrol

(1S,2S,3R,4R,5S)-2-O-benzyl-5-((tert-butoxycarbonyl)amino)-1-O-(tert-butyldimethylsilyl)-3,4-O-isopropylidenecyclopentane-1,2,3,4-tetrol

(1R,2S,3S,4S,5R)-1-O-acetyl-2-O-benzyl-5-iodo-3,4-O-isopropylidenecyclopentane-1,2,3,4-tetrol

(1R,2S,3S,4S,5R)-2-O-benzyl-1-O-(tert-butyldimethylsilyl)-5-iodo-3,4-O-isopropylidenecyclopentane-1,2,3,4-tetrol

(3aR,3bS,6aR,7R,7aR)-7-benzoxy-2,2-dimethyl<1,3>dioxolo<4,5-a>cyclopent<4,5-d>oxazolidin-5-one

(S)-4-叔丁基二甲基硅氧基-2-环戊酮

(1R,4S)-1-O-benzyl-4-O-(tert-butyldimethylsilyl)cyclopent-2-ene-1,4-diol

(1R,2R,3S,4S)-1-O-benzyl-4-O-(tert-butyldimethylsilyl)cyclopentane-1,2,3,4-tetrol

(1R,2S,3S,4S)-1-O-benzyl-4-O-(tert-butyldimethylsilyl)-2,3-O-isopropylidenecyclopentane-1,2,3,4-tetrol

(1S,2S,3R,4R,5R)-2-O-benzyl-5-((tert-butoxycarbonyl)amino)-3,4-O-isopropylidenecyclopentane-1,2,3,4-tetrol