4,7,8,9-tetra-O-acetyl-5-N-carbobenzoxylamino-2-β-chloro-2,3,5-trideoxy-β-D-glycero-D-galacto-2-nonulopyranosidonic acid methyl ester

2,4,7,8,9-penta-O-acetyl-5-N-carbobenzoxylamino-3,5-dideoxy-β-D-glycero-D-galacto-2-nonulo-pyranosidonic acid methyl ester

2,5-dioxopyrrolidin-1-yl formate

Methyl 5-amino-3,5-dideoxy-α-D-glycero-D-galacto-2-nonulopyranosidonic acid methyl ester

α-methyl-5-N-carbomethoxyamino-3,5-dideoxy-β-D-glycero-D-galacto-2-nonulopyranosidonic acid