Asymmetric Total Synthesis of (+)-6-epi-Castanospermine by the Stereoselective Formation of a syn,anti Acetylenic 2-Amino-1,3-diol Stereotriad
作者:Julien Louvel、Candice Botuha、Fabrice Chemla、Emmanuel Demont、Franck Ferreira、Alejandro Pérez-Luna
DOI:10.1002/ejoc.201000202
日期:2010.5
The asymmetric total synthesis of (+)-6-epi-castanospermine (1) is described herein. In this synthesis the diastereoselective addition of a racemic allenylzinc reagent to an enantiopure α-alkoxy-tert-butylsulfinylimine is the key step and is followed by the formation of a piperidine ring by ring-closing metathesis and subsequent syn-dihydroxylation of an alkene.
本文描述了 (+)-6-epi-栗精胺 (1) 的不对称全合成。在该合成中,将外消旋丙二烯基锌试剂非对映选择性加成到对映体纯 α-烷氧基-叔丁基亚磺酰亚胺是关键步骤,然后通过闭环复分解和随后烯烃的顺式二羟基化形成哌啶环。