O-(2-O-acetyl-3,4-di-O-benzyl-6-O-tert-butyldiphenylsilyl-α-D-mannopyranosyl) trichloroacetimidate 、
allyl 3,4,6-tri-O-benzyl-α-D-mannopyranosyl-(1->6)-[3,4,6-tri-O-benzyl-2-deoxy-2-trichloroacetamido-β-D-galactopyranosyl-(1->4)]-2-O-allyl-3-O-benzyl-α-D-mannopyranoside 在
三氟甲磺酸三甲基硅酯 作用下,
以
乙醚 为溶剂,
反应 0.25h,
以96%的产率得到allyl 2-acetyl-3,4-dibenzyl-6-tert-butyldiphenylsilyl-α-D-mannopyranosyl-(1->2)-3,4,6-tribenzyl-α-D-mannopyranosyl-(1->6)-[3,4,6-tribenzyl-2-deoxy-2-trichloroacetamido-β-D-galactopyranosyl-(1->4)]-2-allyl-3-benzyl-α-D-mannopyranoside