New Strategies for Molecular Diversification of 2-[Aminoalkyl-(1H-1,2,3-triazol-1- yl)]-1,4-naphthoquinones Using Click Chemistry
作者:Ronaldo de Oliveira、Mauro da Silva、Moara da Silva、Valentina Melo、Wagner Valença、Josinete da Paz、Celso Camara
DOI:10.21577/0103-5053.20160207
日期:——
3-triazol-1-yl)ethylamino)]-3-(3-methylpropenyl)-1,4-naphthoquinones from lawsone with an overall yield of approximately 27% in six steps. On the other hand, convergent synthesis (Strategy B) was employed for the synthesis of 2-[(4-phenyl-1H-1,2,3-triazol-1-yl)alkyl-amino)]-3-(3-methylbut-2-en-1-yl)-1,4-naphthoquinones from the reaction between 2-methoxy-lapachol with amino-triazoles with a global yield of about
基于点击化学的2-氨基-烷基-1,2,3-三唑-1,4-萘醌衍生物合成策略可从1,4-萘醌(1,4-NQ)获得所需的产物,以及生物基的法拉索,去甲拉帕胆和拉帕胆 从1,4-NQ和氨基醇开始的第一条路线(策略A),然后是2-氨基-烷基-1,4-NQ醇,被甲苯磺酸化。叠氮化物离子取代了甲苯磺酸酯基团,得到2-叠氮化物-烷基-1,4-NQ,将其置于铜催化的叠氮化物炔烃环加成(CuAAC)条件下。以大约47%的总产率获得了三唑-萘醌。另一种途径(策略B)使用NaN3作为亲核试剂,依次进行CuAAC取代邻苯二甲酰亚胺,并用肼生成氨基三唑对邻苯二甲酰亚胺基团进行脱保护。随后的反应是,1 4-NQ分四步生产了2-氨基-烷基-1,2,3-三唑-1,4-NQ衍生物,总产率为45-76%。在我们开发了这两种策略之后,选择了线性合成方法(策略A)来制备2-[((2-(1H-1,2,3-三唑-1-基)乙基氨基)]