allyl 2,4,6-tri-O-benzoyl-α-D-mannopyranoside 、
6-O-acetyl-2,3,4-tri-O-benzoyl-α-D-mannopyranosyl-(1->3)-2,4,6-tri-O-benzoyl-α-D-mannopyranosyl trichloroacetamidate 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85%的产率得到allyl 6-O-acetyl-2,3,4-tri-O-benzoyl-α-D-mannopyranosyl-(1->3)-2,4,6-tri-O-benzoyl-α-D-mannopyranosyl-(1->3)-2,3,4-tri-O-benzoyl-α-D-mannopyranoside