3,4,6-tri-O-acetyl-2-deoxy-2-phthalimido-β-D-galactopyranosyl bromide 、
benzyl 2-acetamido-4,6-di-O-benzyl-2-deoxy-α-D-galactopyranoside 在
silver perchlorate 、 silver carbonate 、
吡啶 作用下,
以
二氯甲烷 为溶剂,
-15.0~20.0 ℃
、1.32 Pa
条件下,
反应 49.0h,
以70%的产率得到benzyl 3,4,6-tri-O-acetyl-2-deoxy-2-phthalimido-β-D-galactopyranosyl-(1->3)-2-acetamido-4,6-di-O-benzyl-2-deoxy-α-D-galactopyranoside