作者:Lei Miao、Stassi C. DiMaggio、Hong Shu、Mark L. Trudell
DOI:10.1021/ol9002288
日期:2009.4.2
>30% overall yield with 80% ee and 86% ee, respectively. An enantioselective iridium-catalyzed N-heterocyclization reaction with either (R)- or (S)-1-phenylethylamine and 1-(5-methoxypyridin-3-yl)-1,5-pentanediol was employed to generate the 2-(pyridin-3-yl)-piperidine ring system in 69−72% yield.
两栖生物碱noranabasamine的R和S对映异构体均以>30% 的总收率制备,ee 分别为80% 和86%。使用对映选择性铱催化的N-杂环化反应与 ( R )- 或 ( S )-1-苯乙胺和 1-(5-甲氧基吡啶-3-基)-1,5-戊二醇生成 2-(吡啶-3-基)-哌啶环系统,产率为 69-72%。