3,6-di-O-acetyl-2-deoxy-2-phthalimido-4-O-(2,3,4,6-tetra-O-acetyl-β-D-galactopyranosyl)-β-D-glucopyranosyl bromide 、 O-(3,4,6-Tri-O-benzyl-α-D-mannopyranosyl)-(1->6)-O-(3-O-allyl-2,4-di-O-benzyl-β-D-mannopyranosyl)-(1->4)-1,6-anhydro-2-azido-3-O-benzyl-2-desoxy-β-D-glucopyranose 在
2,4,6-三甲基吡啶 、
silver trifluoromethanesulfonate 作用下,
以
二氯甲烷 为溶剂,
反应 5.0h,
以75%的产率得到O-(2,3,4,6-Tetra-O-acetyl-β-D-galactopyranosyl)-(1->4)-O-(3,6-di-O-acetyl-2-desoxy-2-phthalimido-β-D-glucopyranosyl)-(1->2)-O-3,4,6-tri-O-benzyl-α-D-mannopyranosyl)-(1->6)-O-(3-O-allyl-2,4-di-O-benzyl-β-D-mannopyranosyl)-(1->4)-1,6-anhydro...