2,3,4,6,7-penta-O-benzoyl-L-glycero-α-D-manno-heptopyranosyl bromide 、
2-(4-trifluoroacetamidophenyl)ethyl O-(6-O-benzoyl-2,3,4-tri-O-benzyl-L-glycero-α-D-manno-heptopyranosyl)-(1<*>3)-2,4,6,7-tetra-O-acetyl-L-glycero-α-D-manno-heptopyranoside 在
4 A molecular sieve 、
silver trifluoromethanesulfonate 作用下,
以
二氯甲烷 为溶剂,
反应 2.0h,
以71%的产率得到2-(4-trifluoroacetamidophenyl)ethyl O-(2,3,4,6,7-penta-O-benzoyl-L-glycero-D-manno-heptopyranosyl)-(1<*>7)-O-(6-O-benzoyl-2,3,4-tri-O-benzyl-L-glycero-α-D-manno-heptopyranosyl)-(1<*>3)-2,4,6,7-tetra-O-acetyl-L-glycero-α-D-manno-heptopyranoside