3,4,6-tri-O-acetyl-2-deoxy-2-(2,2,2-trichloroacetamido)-β-D-glucopyranosyl-(1->5)-3,4-di-O-acetyl-2,6-anhydro-7-bromo-7-deoxy-D-glycero-L-galacto-heptonamide 、
亚磷酸三乙酯 以70%的产率得到2-acetamido-3,4,6-tri-O-acetyl-2-deoxy-β-D-glucopyranosyl-(1->5)-3,4-di-O-acetyl-2,6-anhydro-7-deoxy-7-(diethoxyphosphoryl)-D-glycero-L-galacto-heptonamide