methyl 3,4,6-tri-O-benzyl-β-D-mannopyranosyl-(1->2)-3,6-di-O-benzyl-4-deoxy-β-D-lyxo-hexopyranoside 、
2-O-acetyl-3,4,6-tri-O-benzyl-D-glucopyranosyl trichloroacetimidate 在
三氟甲磺酸三甲基硅酯 作用下,
以
二氯甲烷 为溶剂,
反应 1.0h,
以61%的产率得到methyl 2-O-acetyl-3,4,6-tri-O-benzyl-β-D-glucopyranosyl-(1-> 2)-3,4,6-tri-O-benzyl-β-D-mannopyranosyl-(1-> 2)-3,6-di-O-benzyl-4-deoxy-β-D-lyxohexopyranoside