(2S,3R,4E)-2-azido-3-benzoyloxy-4-octadecen-1-ol 、
O-(methyl 5-acetamido-4,7,8,9-tetra-O-acetyl-3,5-dideoxy-D-glycero-α-D-galacto-2-nonulopyranosylonate)-(2->6)-O-(2,3,4-tri-O-acetyl-β-D-galactopyranosyl)-(1->4)-2,3,6-tri-O-acetyl-D-glucopyranosyl trichloroacetimidate 在
4 A molecular sieve 、
三氟化硼乙醚 作用下,
以
二氯甲烷 为溶剂,
反应 3.0h,
以92%的产率得到O-(methyl 5-acetamido-4,7,8,9-tetra-O-acetyl-3,5-dideoxy-D-glycero-α-D-galacto-2-nonulopyranosylonate)-(2->6)-O-(2,3,4-tri-O-acetyl-β-D-galactopyranosyl)-(1->4)-O-(2,3,6-tri-O-acetyl-β-D-glucopyranosyl)-(1->1)-(2S,3R,4E)-2-azido-3-O-benzoyl-4-octad..