、                                                                                      
乙酸酐                                                                                                                                                              在
                                                                                                                                                                                 
吡啶                                                                                                                                  作用下,
                                                                                                                                                                                        反应 10.0h,
                                                                                                                生成                                                 2-acetamido-3,4,6-tri-O-acetyl-2-deoxy-α-D-galactopyranosyl-(1->4)-2-acetamido-3,6-di-O-benzyl-2-deoxy-α-D-galactopyranosyl-(1->3)-1-O-acetyl-2,4-diacetamido-2,4,6-trideoxy-β-D-glucopyranose   、                                                                                             
2-acetamido-3,4,6-tri-O-acetyl-2-deoxy-α-D-galactopyranosyl-(1->4)-2-acetamido-3,6-di-O-benzyl-2-deoxy-α-D-galactopyranosyl-(1->3)-1-O-acetyl-2,4-diacetamido-2,4,6-trideoxy-α-D-glucopyranose