Enantioselective Access to All-trans 5-Alkylpiperidine-3,4-diols: Application to the Asymmetric Synthesis of the 1-N-Iminosugar (+)-Isofagomine
作者:Yves Génisson、Arnaud Rives、Vanessa Faugeroux、Nathalie Saffon、Michel Baltas
DOI:10.1055/s-0029-1216935
日期:2009.10
that, after optimization of the ring-enlargement reaction conditions, could be efficiently transformed into the corresponding 3-hydroxypiperidines. This approach was applied to the asymmetric synthesis of (+)-isofagomine relying on regio- and stereoselective oxirane opening with the cyanide anion of a pivotal epoxypyrrolidine. iminosugar - piperidine - ring enlargement - epoxide opening
描述了获得3,4-二取代的N-苄基脯氨醇衍生物,在优化环扩大反应条件之后,可以将其有效地转化为相应的3-羟基哌啶。该方法应用于(+)-异黄酮的不对称合成,其依赖于区域和立体选择性环氧乙烷的打开,并带有关键性环氧吡咯烷的氰化物阴离子。 亚氨基糖-哌啶-扩环-环氧开口