O-(2,3,4,6-tetra-O-benzyl-α-D-glucopyranosyl)-(1-4)-O-(2,3,6-tri-O-benzyl-α-D-glucopyranosyl)-(1-6)-2-pyridyl 2,3,4-tri-O-benzyl-1-thio-β-D-glucopyranoside   、                                                                                      
双丙酮半乳糖                                                                                                                                                                                              以
                                                                                         
二氯甲烷                                                                                  为溶剂,
                                                                                                                                                    反应 22.0h,
                                                                                                                以57%的产率得到O-(2,3,4,6-tetra-O-benzyl-α-D-glucopyranosyl)-(1-4)-O-(2,3,6-tri-O-benzyl-α-D-glucopyranosyl)-(1-6)-O-(2,3,4-tri-O-benzyl-α-D-glucopyranosyl)-(1-6)-1,2:3,4-di-O-isopropylidene-α-D-galactopyranoside