4-O-acetyl-2-azido-3,6-di-O-benzyl-2-deoxy-α,β-D-mannopyranoside 、
allyl 2-azido-3,6-di-O-benzyl-2-deoxy-α-D-mannopyranosyl-(1->4)-2-azido-3,6-di-O-benzyl-2-deoxy-α-D-mannopyranoside 在
二苯基亚砜 、
2,4,6-三叔丁基嘧啶 、
三氟甲磺酸酐 作用下,
以
二氯甲烷 为溶剂,
反应 0.33h,
以65%的产率得到allyl 4-O-acetyl-2-azido-3,6-di-O-benzyl-2-deoxy-α-D-mannopyranosyl-(1->4)-2-azido-3,6-di-O-benzyl-2-deoxy-α-D-mannopyranosyl-(1->4)-2-azido-3,6-di-O-benzyl-2-deoxy-α-D-mannopyranoside