Iminium ion cascade reactions: stereoselective synthesis of quinolizidines and indolizidines
作者:Shawn M. Amorde、Ivan T. Jewett、Stephen F. Martin
DOI:10.1016/j.tet.2008.10.074
日期:2009.4
A novel iminium ion cascade reaction has been developed that allows for the stereoselective synthesis of a variety of substituted aza-fused bicycles. The combination of amino allylsilanes and aldehydes (or ketones) was used to synthesize a number of quinolizidines and indolizidines in a one-pot reaction sequence. This technology has been used to effect the facile syntheses of several indolizidine and
已经开发了一种新型亚胺离子级联反应,可以立体选择性地合成各种取代的氮杂融合双环。氨基烯丙基硅烷和醛(或酮)的组合被用于在一锅反应序列中合成许多喹唑西啶和吲哚里西啶。该技术已被用于实现几种吲哚里西啶和喹诺西啶天然产物的简便合成,包括 (±)-epilupinine、(±)-tashiromine 和 (-)-epimyrtine。已经检查了底物范围,改变氨基烯丙基硅烷(伯、仲和共轭)和羰基化合物(醛和酮)的类型,以提供各种稠环结构。改变选择的组分允许在核心结构的不同位置包含合成有用的官能团。