thiophenyl 3,6-di-O-benzyl-α-D-mannopyranoside   、                                                                                      3,4,6-tri-O-acetyl-2-deoxy-2-phthalimido-β-D-glucopyranosyl-O-trichloroacetimidate                                                                                                                                                              在
                                                                                                                                                                                 
三氟甲磺酸三甲基硅酯                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
二氯甲烷                                                                                  为溶剂,
                                                                                                                                                                                        以72%的产率得到(2R,2'R,3S,3'S,4R,4'R,5R,5'R,6S,6'S)-(((2R,3R,4S,5S,6R)-4-(benzyloxy)-2-((benzyloxy)methyl)-6-(phenylthio)tetrahydro-2H-pyran-3,5-diyl)bis(oxy))bis(2-(acetoxymethyl)-5-(1,3-dioxoisoindolin-2-yl)tetrahydro-2H-pyran-6,3,4-triyl) tetraacetate