2-O-acetyl-3-O-allyl-4,6-di-O-benzyl-α-D-glucopyranosyl trichloroacetimidate   、                                                                                      
benzyl 2-O-acetyl-4,6-di-O-benzyl-β-D-glucopyranosyl-(1→3)-2-O-acetyl-4,6-di-O-benzyl-β-D-glucopyranoside                                                                                                                                                              在
                                                                                                                                                                                 
三乙基硅基三氟甲磺酸酯                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
二氯甲烷                                                                                  为溶剂,
                                                                                                                                                    反应 0.83h,
                                                                                                                以63%的产率得到benzyl 2-O-acetyl-3-O-allyl-4,6-di-O-benzyl-β-D-glucopyranosyl-(1-->)-2-O-acetyl-4,6-di-O-benzyl-β-D-glucopyranosyl-(1-->)-2-O-acetyl-4,6-di-O-benzyl-β-D-glucopyranoside