Asymmetric routes toward polyhydroxylated pyrrolidines: Synthesis of 1,4-dideoxy-1,4-imino-d-galactitol and 1,4-dideoxy-1,4-imino-d-glucitol
作者:Giuliana Righi、Emanuela Mandic'、Carla Sappino、Ergys Dema、Paolo Bovicelli
DOI:10.1016/j.carres.2016.09.018
日期:2016.11
Herein the total synthesis of the pyrrolidine alkaloids 1,4-dideoxy-1,4-imino-d-galactitol and its diastereoisomer 1,4-dideoxy-1,4-imino-d-glucitol is described, starting from a common optically active precursor. The key step in our approach was the double diastereoselection in the asymmetric dihydroxylation of chiral vinyl azido alcohols, obtained by means of two different regio- and stereoselective
本文描述了从常见的旋光活性开始的吡咯烷生物碱1,4-二脱氧-1,4-亚氨基-d-半乳糖醇及其非对映异构体1,4-二脱氧-1,4-亚氨基-d-葡萄糖醇的全合成前体。我们方法的关键步骤是手性乙烯基叠氮基醇的不对称二羟基化中的双非对映异构,这是通过相应手性乙烯基环氧化物的两个不同的区域和立体选择性亲核开口获得的。