methyl O-(2,3,4-tri-O-acetyl-6-O-p-tolylsulfonyl-β-D-glucopyranosyl)-(1->4)-O-(2,3-di-O-acetyl-6-O-p-tolylsulfonyl-β-D-glucopyranosyl)-(1->4)-2,3-di-O-acetyl-6-O-p-tolylsulfonyl-β-D-glucopyranoside                                                                                                                                                              在
                                                                                                                                                                                 
lithium chloride                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
N,N-二甲基甲酰胺                                                                                  为溶剂,
                                                                                                                                                    反应 3.0h,
                                                                                                                以84%的产率得到methyl O-(2,3,4-tri-O-acetyl-6-chloro-6-deoxy-β-D-glucopyranosyl)-(1->4)-O-(2,3-di-O-acetyl-6-chloro-6-deoxy-β-D-glucopyranosyl)-(1->4)-2,3-di-O-acetyl-6-chloro-6-deoxy-β-D-glucopyranoside