4-methylphenyl 4,6-O-benzylidene-2-deoxy-3-O-{2,3-di-O-benzoyl-4-O-[tert-butyl-(dimethyl)silyl]-6-methyl-β-D-glucopyranuronosyl}-1-thio-2-{[(2,2,2-trichloroethoxy)-carbonyl]amino}-β-D-glucopyranoside   、                                                                                      
prop-2-en-1-yl 2-(acetylamino)-4,6-O-benzylidene-2-deoxy-3-O-(2,3-di-O-benzoyl-6-methyl-β-D-glucopyranosyl)-α-D-glucopyranoside                                                                                                                                                              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 17.0h,
                                                                                                                以59%的产率得到prop-2-en-1-yl 2,3-di-O-benzoyl-4-O-[tertbutyl(dimethyl)silyl]-6-methyl-β-D-glucopyranuronosyl-(1→3)-4,6-O-benzylidene-2-deoxy-2-{[(2,2,2-trichloroethoxy)carbonyl]-amino}-β-D-glucopyranosyl-(1→4)-2,3-di-O-benzoyl-6-methyl-β-D-glucopyranuronosyl-(1→3)-2-(acetylamino)-4,6-O-benzylidene-2-deoxy-α-D-glucopyranoside