Glycosyl fluorides from <i>n</i>-pentenyl-related glycosyl donors — Application to glycosylation strategies
作者:Bert Fraser-Reid、J. Cristobal Lopez、Paloma Bernal-Albert、Ana M. Gomez、Clara Uriel、Juan Ventura
DOI:10.1139/cjc-2012-0285
日期:2013.1
fluorides by a variety of methods. In the case of NPGs, Barluenga’s reagent, bis(pyridinium)iodonium(I)tetrafluoroborate (IPy2BF4), gives good yields of glycosyl fluorides when HF–pyridine complex is used as an additional fluoride source. NPOEs can be activated either by a combination of electrophilic iodonium (Barluenga’s reagent) and HBF4 or by the action of HF–pyridine complex. The ensuing glycosyl
正戊烯基糖苷 (NPG) 和正戊烯基原酸酯 (NPOE) 已通过多种方法转化为糖基氟。在 NPG 的情况下,当使用 HF-吡啶复合物作为额外的氟化物来源时,Barluenga 试剂双(吡啶鎓)碘鎓(I)四氟硼酸盐(IPy2BF4)可产生良好的糖基氟化物产率。NPOE 可以通过亲电子碘鎓(Barluenga 试剂)和 HBF4 的组合或通过 HF-吡啶复合物的作用被激活。当遇到 NPG 时,随之而来的糖基氟化物会形成一对半正交的糖基供体。