One-Pot Synthesis of Azanucleosides from Proline Derivatives - Stereoselectivity in Sequential Processes
作者:Alicia Boto、Dácil Hernández、Rosendo Hernández
DOI:10.1002/ejoc.201000360
日期:——
Common amino acid derivatives can be transformed in one-step fashion into N-azanucleosides. The method is a sequential process initiated by a domino radical decarboxylation/ oxidation reaction; an acyliminium ion is formed as an intermediate and can be trapped by nitrogen bases (purines, pyrimidines, and benzotriazole). The mildness of the reaction conditions and the good yields obtained make this
常见的氨基酸衍生物可以一步方式转化为 N-氮杂核苷。该方法是由多米诺自由基脱羧/氧化反应引发的连续过程;acyliminium 离子作为中间体形成,可以被氮碱(嘌呤、嘧啶和苯并三唑)捕获。温和的反应条件和良好的产率使该程序成为传统方法的有趣替代方案。以 4-(甲硅烷氧基)脯氨酸衍生物为底物获得了良好的立体选择性。