trichloroacetimidate 3,4,6-tri-O-acetyl-2-deoxy-2-N-acetamido-β-D-glucopyranosyl(1→2)-3,4,6-tri-O-acetyl-α-D-mannopyranoside 、
Octyl-O-(3,4,6-tri-O-benzyl-2-O-methyl-α-D-mannopyranosyl)-(1->6)-2,4-di-O-benzyl-β-D-mannopyranosid 在
三氟甲磺酸三甲基硅酯 、 3 A molecular sieve 作用下,
以
二氯甲烷 为溶剂,
反应 1.0h,
以52%的产率得到Octyl-O-(2-acetamido-3,4,6-tri-O-acetyl-2-desoxy-β-D-glucopyranosyl)-(1->2)-O-(3,4,6-tri-O-acetyl-α-D-mannopyranosyl)-(1->3)-O-<(3,4,6-tri-O-benzyl-2-O-methyl-α-D-mannopyranosyl)-(1->6)>-2,4-di-O-benzyl-β-D-mannopyranosid