benzyl (methyl 2,3-di-O-benzyl-β-D-glucopyranosyluronate)-(1->6)-2,3,4-tri-O-benzyl-β-D-glucopyranoside 、
6-O-acetyl-2-azido-3-O-benzyl-2-deoxy-4-O-methyl-1-O-trichloroacetimidoyl-D-glucopyranose 在
4 A molecular sieve 、
叔丁基二甲硅基三氟甲磺酸酯 作用下,
以
甲苯 为溶剂,
反应 0.33h,
以89%的产率得到benzyl (6-O-acetyl-2-azido-3-O-benzyl-2-deoxy-4-O-methyl-α-D-glucopyranosyl)-(1->4)-(methyl-2,3-di-O-benzyl-β-D-glucopyranosyluronate)-(1->6)-2,3,4-tri-O-benzyl-β-D-glucopyranoside