ethyl 2,3,4,6-tetra-O-benzoyl->-D-mannopyranosyl-(1->2)-3,4,6-tri-O-benzyl-1-thio-α-D-mannopyranoside   、                                                                                      
3-trifluoroacetamidopropyl (2,4-di-O-benzoyl-6-O-chloroacetyl-α-D-mannopyranosyl)-(1->2)-(3,4,6-tri-O-benzyl-α-D-mannopyranosyl)-(1->2)-3,4,6-tri-O-benzyl-α-D-mannopyranoside                                                                                                                                                              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 1.33h,
                                                                                                                生成                                                 3-trifluoroacetamidopropyl (2,3,4,6-tetra-O-benzoyl-α-D-mannopyranosyl)-(1->2)-(3,4,6-tri-O-benzyl-β-D-mannopyranosyl)-(1->3)-(2,4-di-O-benzoyl-6-O-chloroacetyl-α-D-mannopyranosyl)-(1->2)-(3,4,6-tri-O-benzyl-α-D-mannopyranosyl)-(1->2)-3,4,6-tri-O-benzyl-α-D-mannopyranoside   、                                                                                             3-trifluoroacetamidopropyl (2,3,4,6-tetra-O-benzoyl-α-D-mannopyranosyl)-(1->2)-(3,4,6-tri-O-benzyl-α-D-mannopyranosyl)-(1->3)-(2,4-di-O-benzoyl-6-O-chloroacetyl-α-D-mannopyranosyl)-(1->2)-(3,4,6-tri-O-benzyl-α-D-mannopyranosyl)-(1->2)-3,4,6-tri-O-benzyl-α-D-mannopyranoside