3,6-di-O-benzyl-2-deoxy-2-dimethylmaleimido-β-D-glucopyranosyl azide 、
O-(2,3-di-O-benzoyl-4,6-O-benzylidene-β-D-mannopyranosyl)-(1->4)-3,6-di-O-benzyl-2-deoxy-2-dimethylmaleimido-β-D-glucopyranosyl trichloroacetimidate 在
三氟甲磺酸三甲基硅酯 、 4 A molecular sieve 作用下,
以
二氯甲烷 为溶剂,
反应 0.5h,
以80%的产率得到O-(2,3-di-O-benzoyl-4,6-O-benzylidene-β-D-mannopyranosyl)-(1->4)-(3,6-di-O-benzyl-2-deoxy-2-dimethylmaleimido-β-D-glucopyranosyl)-(1->4)-3,6-di-O-benzyl-2-deoxy-2-dimethylmaleimido-β-D-glucopyanosyl azide