3-tert-butyldimethylsilyloxy-4,5-(diphenylmethylenedioxy)benzoic acid   、                                                                                      
O3-Methyl-1,6-anhydro-β-D-glucopyranose                                                                                                                                                              在
                                                                                                                                                                                 
4-二甲氨基吡啶   、                                                                                                  
4-(dimethylamino)pyridine hydrochloride   、                                                                                                  
N,N'-二环己基碳二亚胺                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
二氯甲烷                                                                                  为溶剂,
                                                                                                                                                    反应 14.0h,
                                                                                                                以82%的产率得到[(1R,2R,3S,4R,5R)-4-[7-[tert-butyl(dimethyl)silyl]oxy-2,2-diphenyl-1,3-benzodioxole-5-carbonyl]oxy-3-methoxy-6,8-dioxabicyclo[3.2.1]octan-2-yl] 7-[tert-butyl(dimethyl)silyl]oxy-2,2-diphenyl-1,3-benzodioxole-5-carboxylate