methyl 4-O-acetyl-2-azido-6-O-benzyl-2-deoxy-β-D-galactopyranoside   、                                                                                      Acetic acid (4aS,6S,7R,8S,8aR)-8-benzyloxy-2,2-dimethyl-6-phenylsulfanyl-hexahydro-pyrano[3,2-d][1,3]dioxin-7-yl ester                                                                                                                                                              在
                                                                                                                                                                                 
N-碘代丁二酰亚胺   、                                                                                                  
三氟甲磺酸                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
二氯甲烷                                                                                  为溶剂,
                                                                                                                                                    反应 0.25h,
                                                                                                                以99%的产率得到Acetic acid (4aS,6R,7R,8S,8aR)-6-((2R,3R,4R,5R,6R)-3-acetoxy-5-azido-2-benzyloxymethyl-6-methoxy-tetrahydro-pyran-4-yloxy)-8-benzyloxy-2,2-dimethyl-hexahydro-pyrano[3,2-d][1,3]dioxin-7-yl ester