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