Diversity-Oriented Synthesis of Enantiopure Furofurans from Carbohydrates: An Expedient Approach with Built-in Michael Acceptor, Masked Aldehyde and Leaving Group in a Single Sugar Derivative
作者:Chinmoy Manna、Tanmaya Pathak
DOI:10.1002/ejoc.201300603
日期:2013.9
A single sugar molecule containing three functional groups, namely a masked aldehyde, a Michael acceptor and a leaving group, reacts with a series of β-dicarbonyl compounds and related reagents to form up to three new bonds and up to three new stereocenters. The configuration of the sugar derivative controls the diastereoselectivity in the formation of all the new bonds without a requirement for any
包含三个官能团(即掩蔽醛、迈克尔受体和离去基团)的单个糖分子与一系列 β-二羰基化合物和相关试剂反应,形成最多三个新键和最多三个新立体中心。糖衍生物的构型控制了所有新键形成的非对映选择性,而不需要任何外部试剂进行不对称诱导。这种基于“手性池”的多样性导向合成策略导致了一系列基于不同支架和附属物变异的呋喃的形成,以及迄今为止未知的双环 3,8-二氧杂双环 [4.2.1] 壬烷家族.