methyl 2-azido-4,6-di-O-benzoyl-2-desoxy-β-D-galactopyranosyde 、
2,3,6-Tri-O-acetyl-2-O-(trichloroacetyl)-β-D-galactopyranosyl chloride 在
4 A molecular sieve 、 silver perchlorate 作用下,
以
二氯甲烷 为溶剂,
反应 48.0h,
以52%的产率得到methyl-2-azido-4,6-di-O-benzoyl-2-desoxy-3-O-(3,4,6-tri-O-acetyl-2-O-trichloracetyl-α-D-galactopyranosyl)-β-D-galactopyranosid