O-(2,3,4,6-tetra-O-acetyl-β-D-galactopyranosyl)-(1->4)-O-(2-acetamido-3,6-di-O-acetyl-2-deoxy-β-D-glucopyranosyl)-(1->2)-O-<(2,3,4,6-tetra-O-acetyl-β-D-galactopyranosyl)-(1->4)-O-(2-acetamido-3,6-di-O-acetyl-2-deoxy-β-D-glucopyranosyl)-(1->4)>-3,...   、                                                                                      
三氯乙腈                                                                                                                                                              在
                                                                                                                                                                                 sodium hydride                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
二氯甲烷                                                                                  为溶剂,
                                                                                                                                                    反应 1.0h,
                                                                                                                以92%的产率得到O-(2,3,4,6-tetra-O-acetyl-β-D-galactopyranosyl)-(1->4)-O-(2-acetamido-3,6-di-O-acetyl-2-deoxy-β-D-glucopyranosyl)-(1->2)-O-<(2,3,4,6-tetra-O-acetyl-β-D-galactopyranosyl)-(1->4)-O-(2-acetamido-3,6-di-O-acetyl-2-deoxy-β-D-glucopyranosyl)-(1->4)>-3,...