6-O-acetyl-2-azido-3,4-di-O-benzyl-2-deoxy-α-D-glucopyranosyl bromide 、
3-O-Acetyl-1,6-anhydro-2-O-benzoyl-β-D-galactopyranose 在
4 A molecular sieve 、 silver perchlorate 、 silver carbonate 作用下,
生成 3-O-Acetyl-4-O-(6-O-acetyl-2-azido-3,4-di-O-benzyl-2-desoxy-α-D-glucopyranosyl)-1,6-anhydro-2-O-benzoyl-β-D-galactopyranose