Branched tetrahydrofuran α,α-disubstituted-δ-sugar amino acid scaffolds from branched sugar lactones: a new family of foldamers?
作者:Michela Iezzi Simone、Raquel Soengas、Christopher R. Newton、David J. Watkin、George W.J. Fleet
DOI:10.1016/j.tetlet.2005.06.029
日期:2005.8
leaving group is on a primary carbon adjacent to a quaternary centre—provides access to tetrahydrofurans with branched carbon chains from branched carbohydrate lactones; the first examples of a new class of branched chain tetrahydrofuran α,α-disubstituted-δ-sugar amino acid scaffolds are described.
有效的开环三羟基三氟甲磺酸盐的S N 2闭环(其中的离去基团位于与季中心相邻的伯碳上)可从支链碳水化合物内酯获得具有支链碳链的四氢呋喃;描述了新型的支链四氢呋喃α,α-二取代-δ-糖氨基酸支架的第一实例。