Internal C-aryl and C-alkyl glycosides derived from 2-aminoglycopyranoses have been synthesized, exploiting a HF-mediated stereoselective intramolecular glycosylation. These conditions are compatible with acetate protecting groups and allow introduction of aromatics with various electronic distributions at the anomeric position. This strategy also provides straightforward entry to original fluorinated
利用HF介导的立体选择性分子内糖基化,已经合成了衍生自2-
氨基糖基
葡萄糖的内部C-芳基和C-烷基糖苷。这些条件与
乙酸酯保护基相容,并允许引入在端基异构位置具有各种电子分布的芳族化合物。该策略还通过串联内部C-糖基化/
氟化反应(从2- N-烯丙基/炔丙基糖
吡喃糖开始),直接进入原始的
氟化糖-氮杂二环杂化物。所有环化均以1,2-顺式立体控制的方式进行。