2-[((2S,3R,4R,5S,6R)-4,5-Diacetoxy-6-acetoxymethyl-2-methoxy-tetrahydro-pyran-3-ylamino)-methylene]-malonic acid dimethyl ester

methyl 2-deoxy-2-<(2',2'-dimethoxycarbonylvinyl)amino>-α-D-glucopyranoside

methyl 2-deoxy-2-<(2,2-dimethoxycarbonylvinyl)amino>-β-D-glucopyranoside