(14-azido-4-((formyloxy)methyl)-4-methyl-5-oxo-2,9,12-trioxa-6-azatetradecanoyl)bis(2-methylpropane-2,1,3-triyl) tetrakis(2,2,5-trimethyl-1,3-dioxane-5-carboxylate)                                                                                                                                                              在
                                                                                                                                                                                 Dowex 50WX
8-200 H
+ ion-exchange resin                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
甲醇                                                                                  为溶剂,
                                                                                                                                                    反应 12.0h,
                                                                                                                以100%的产率得到(14-azido-4-((formyloxy)methyl)-4-methyl-5-oxo-2,9,12-trioxa-6-azatetradecanoyl)bis(2-methylpropane-2,1,3-triyl) tetrakis(3-hydroxy-2-(hydroxymethyl)-2-methylpropanoate)