Functionalization of 2<i>H</i>-1,2,3-Triazole <i>C</i>-Nucleoside Template via N<sup>2</sup> Selective Arylation
作者:Alexandra Basilio Lopes、Patrick Wagner、Rodrigo Octavio Mendonça Alves de Souza、Nadège Lubin Germain、Jacques Uziel、Jean-Jacques Bourguignon、Martine Schmitt、Leandro S. M. Miranda
DOI:10.1021/acs.joc.6b00323
日期:2016.6.3
C-Nucleosides are an underexplored and important class of nucleosides with antiviral and anticancer activity. In addition, triazole heterocycles are well employed as a strategy to modify nucleobase in nucleoside analogues, although rare examples were described for triazoyl C-nucleosides. N2-Aryl-1,2,3-triazole C-nucleoside compounds that could be obtained by selective 1,2,3-triazole heterocycle N2
C-核苷是具有抗病毒和抗癌活性的未开发和重要的核苷类。另外,三唑杂环被广泛用作修饰核苷类似物中的核碱基的策略,尽管描述了三唑酰基C-核苷的罕见实例。N 2-芳基-1,2,3-三唑C-核苷化合物,可通过在1-β- d-呋喃核糖基-2 H -1,2,3中进行选择性的1,2,3-三唑杂环N 2芳基化反应获得-三唑底物是在这项研究中设计的。优化条件使用了AdBrettPhos / [PdCl(allyl)] 2作为催化剂体系。这种转变是通过带有电子给体和吸电子基团的芳基卤化物以及杂环卤化物以良好或极好的收率实现的。一旦它允许通过三唑核苷的选择性功能化合成未开发的支架,则在这项研究中开发的转化代表了对核苷领域的重大贡献。