phenyl 4-O-(2-azido-4-benzyloxycarbonylamino-2,4,6-trideoxy-α-D-galactopyranosyl)-2-azido-3-O-benzyl-6-O-tert-butyl-diphenylsilyl-2-deoxy-1-thio-β-D-galactopyranoside 、
2,3,4,6-tetra-O-benzyl-D-glucopyranose trichloroacetimidate 在
三氟甲磺酸三甲基硅酯 作用下,
以
乙腈 为溶剂,
反应 1.0h,
以81%的产率得到phenyl (2,3,4,6-tetra-O-benzyl-β-D-glucopyranosyl)-(1->3)-(2-azido-4-benzyloxycarbonylamino-2,4,6-trideoxy-α-D-galactopyranosyl)-(1->4)-2-azido-3-O-benzyl-6-O-tert-butyl-diphenylsilyl-2-deoxy-1-thio-β-D-galactopyranoside