Synthesis of polyhydroxylated indolizidines and piperidines from Garner's aldehyde: total synthesis of (−)-swainsonine, (+)-1,2-di-epi-swainsonine, (+)-8,8a-di-epi-castanospermine, pentahydroxy indolizidines, (−)-1-deoxynojirimycin, (−)-1-deoxy-altro-nojirimycin, and related diversity
作者:Priyanka Singh、Sudipta Kumar Manna、Gautam Panda
DOI:10.1016/j.tet.2013.11.074
日期:2014.2
Diastereoselective and diverse synthesis of polyhydroxylated indolizidines and piperidines have been described, where a common chiral intermediate 2-(hydroxymethyl) piperidine-3-ol is converted into (−)-swainsonine, (+)-1,2-di-epi-swainsonine, (+)-8,8a-di-epi-castanospermine, pentahydroxy indolizidines, (−)-1-deoxynojirimycin, (−)-1-deoxy-altro-nojirimycin, and related diversity. The key steps were
已经描述了多羟基化的吲哚唑烷和哌啶的非对映选择性和多样的合成,其中普通的手性中间体2-(羟甲基)哌啶-3-醇被转化为(-)-swainsonine,(+)-1,2- di - epi - swainsonine ,(+)-8,8a-di- Epi - castanospermine,五羟基吲哚啶,(-)-1-deoxynojirimycin,(-)-1- deoxy - altro -nojirimycin及其相关多样性。关键步骤是羟基定向分子内氨基汞化,Mitsunobu环化和非对映选择性二羟基化。