Benzoic acid (3aS,4R,6R,6aS)-6-((R)-2-methanesulfonyloxy-1-methoxy-ethyl)-2,2-dimethyl-tetrahydro-furo[3,4-d][1,3]dioxol-4-yl ester

(2R,3R)-2-(tert-Butyl-dimethyl-silanyloxymethyl)-3-formyloxy-4-hydroxy-azetidine-1-carboxylic acid tert-butyl ester

benzoyl 6-(tert-butoxycarbonyl)amino-6-deoxy-2,3-O-isopropylidene-5-O-methyl-α-D-mannofuranoside

benzoyl 5-(tert-butoxycarbonyl)amino-6-O-(tert-butyldimethylsilyl)-5-deoxy-2,3-O-isopropylidene-α-D-mannofuranoside

benzoyl 5-(tert-butoxycarbonyl)amino-6-O-(tert-butyldimethylsilyl)-5-deoxy-2,3-O-isopropylidene-β-L-gulofuranoside