Huisgen Cycloaddition Reaction of <i>C</i>-Alkynyl Ribosides under Micellar Catalysis: Synthesis of Ribavirin Analogues
作者:Ramzi Aït Youcef、Mickaël Dos Santos、Sandrine Roussel、Jean-Pierre Baltaze、Nadège Lubin-Germain、Jacques Uziel
DOI:10.1021/jo900594x
日期:2009.6.5
ribavirin were synthesized from ethyl C-ribosylpropiolate obtained by an alkynylation reaction mediated by indium(0). The C-ribosides were then engaged in a Huisgen 1,3-dipolar cycloaddition reaction under a micellar catalysis. In these conditions, formation of 1,2,3-triazoles with control of the regioselectivity was observed. The regiochemistry of the adducts was determined by HMBC 2D-NMR analysis.
利巴韦林的碳酸化类似物是由铟(0)介导的炔基化反应获得的C-核糖基丙酸乙酯合成的。然后在胶束催化下使C-核糖苷参与Huisgen 1,3-偶极环加成反应。在这些条件下,观察到在控制区域选择性的情况下形成1,2,3-三唑。通过HMBC 2D-NMR分析确定加合物的区域化学。