8-methoxycarbonyloctyl 2,3,6-tri-O-acetyl-4-O-(2,3-di-O-acetyl-6-O-benzoyl-β-D-galactopyranosyl)-β-D-glucopyranoside   、                                                                                      
4,6-di-O-acetyl-3-O-(2,3,4,6-tetra-O-acetyl-β-D-galactopyranosyl)-2-deoxy-2-phthalimido-α,β-galactopyranosyl bromide                                                                                                                                                              在
                                                                                                                                                                                 
2,4,6-三甲基吡啶   、                                                                                                  
silver trifluoromethanesulfonate                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
硝基甲烷                                                                                  为溶剂,
                                                                                                                                                                                        以62%的产率得到8-methoxycarbonyloctyl 2,3,6-tri-O-acetyl-4-O-<2,3-di-O-acetyl-6-O-benzoyl-4-O-<4,6-di-O-acetyl-3-O-(2,3,4,6-tetra-O-acetyl-β-D-galactopyranosyl)-2-deoxy-2-phthalimido-β-D-galactopyranosyl>-β-D-galactopyranosyl>-β-D-glucopyranoside