Synthesis of <i>trans</i>-(3<i>S</i>)-Amino-(4<i>R</i>)-alkyl- and -(4<i>S</i>)-Aryl-piperidines via Ring-Closing Metathesis Reaction
作者:X. Eric Hu、Nick K. Kim、Benoit Ledoussal
DOI:10.1021/ol027019m
日期:2002.12.1
stereochemistry was controlled using a protected D-serine as a starting material. Stereoselective hydrogenation of allylamines provided trans-(3S)-amino-(4R)-alkyl- and -(4S)-aryl-piperidines. This procedure presents the first method for the asymmetric synthesis of 4-substituted 3-amino piperidines.
[反应:见正文]通过闭环易位反应合成了在C-4位带有各种烷基和芳基取代基的反式-(3S)-氨基哌啶。使用受保护的D-丝氨酸作为起始原料来控制绝对立体化学。烯丙基胺的立体选择性氢化提供了反式-(3S)-氨基-(4R)-烷基-和-(4S)-芳基-哌啶。该程序提出了不对称合成4-取代的3-氨基哌啶的第一种方法。