Ethyl 3,4,6-tri-O-acetyl-2-deoxy-2-phthalimido-1-thio-β-D-galactopyranoside 、
3-Azidopropyl (6-O-levulinoyl-2,3,4-tri-O-p-toluoyl-β-D-glucopyranosil)-(1->3)-4-O-acetyl-2-deoxy-2-phthalimido-β-D-galactopyranoside 在
N-碘代丁二酰亚胺 、 4 A molecular sieve 、
silver trifluoromethanesulfonate 作用下,
以
甲苯 为溶剂,
反应 2.0h,
以42%的产率得到3-Azidopropyl (3,4,6-tri-O-acetyl-2-deoxy-2-phthalimido-β-D-galactopyranosyl)-(1->6)-[(6-O-levulinoyl-2,3,4-tri-O-p-toluoyl-β-D-glucopyranosyl)-(1->3)]-4-O-acetyl-2-deoxy-2-phthalimido-β-D-galactopyranoside