已开发出一种用于构建含氟哌啶γ-氨基酸衍生物的有效合成方法。合成概念基于不饱和双环 γ-内酰胺(Vince-内酰胺)通过其环 C=C 键的氧化开环,然后用各种氟烷基胺对二甲酰基中间体进行双还原胺化。该方法已扩展到获取烷基化和全氟烷基化物质以及 γ-内酰胺衍生物。转化以立体控制进行:产物中立体中心的构型由起始 γ-内酰胺的手性中心的构型预先确定。该方法可以扩展到获得对映体纯哌啶γ-氨基酯。10.1002/ejoc。201801540 A cc ep te d M an us crip t European Journal of Organic Chemistry 本文受版权保护。版权所有。2
Synthesis of conformationally restricted 1,2,3-triazole-substituted ethyl β- and γ-aminocyclopentanecarboxylate stereoisomers. Multifunctionalized alicyclic amino esters
作者:Loránd Kiss、Enikő Forró、Reijo Sillanpää、Ferenc Fülöp
DOI:10.1016/j.tet.2010.03.030
日期:2010.5
conformationally restricted β- or γ-amino esters with a cyclopentane skeleton were efficiently synthetized from the bicyclic β-lactam 6-azabicyclo[3.2.0]hept-3-en-7-one (1) and Vince γ-lactam (15) in five or six steps involving the azide–alkyne 1,3-dipolar cycloaddition of azido-substituted amino ester stereoisomers with nonsymmetric acetylenes. The azide–alkyne click reactions were investigated under thermal