Regioselective synthesis and antimicrobial studies of ester linked 1,4-disubstituted 1,2,3-bistriazoles
摘要:
A series of 1,4-disubstituted 1,2,3-bistriazoles was synthesized via click chemistry by cycloaddition of various bisalkynes with benzyl/2-phenylethyl azide. Synthesized triazoles were characterized by IR, H-1 NMR, C-13 NMR and mass spectral techniques. All the compounds were evaluated for antibacterial/antifungal activities and found to possess moderate to good antimicrobial activities. Further the docking study for the most active compound against DNA Gyrase was also carried out. (C) 2012 Elsevier Ltd. All rights reserved.
本工作阐明了一系列新的有机官能化的三乙氧基硅烷的合成,这些有机官能化的三乙氧基硅烷以优异的收率衍生自通用羧酸和3-叠氮基丙基三乙氧基硅烷。已开发出一种简便易行的途径,涉及Cu(I)催化的有机叠氮化物与末端炔烃的1,3-环加成反应,称为点击甲硅烷基化反应,已被开发用于酯-三唑连接的烷氧基硅烷基支架(4a - f)的生成。使用元素分析和傅立叶变换红外光谱,1 H NMR和13 C NMR光谱技术对所有合成的化合物进行了全面表征。重要的是,制得的烷氧基硅烷可能适合原位使用溶胶-凝胶与二氧化硅纳米球的缩合反应通过共价接枝到纳米结构的粒子系统上而导致有机官能团的结合。作为概念的证明,提出了使用双硅烷4 f的一锅法制备有机-无机杂化纳米颗粒的方法。使用吸附实验突出了制备的纳米复合材料对金属离子的效率和选择性,固定化的纳米颗粒对Cu 2+和Pb 2+离子具有较高的感测效率,同时表现出比本体材料更好的响应性。
bis(cholane)-24,24′-diazides with aliphatic dipropargyl esters, or bis(cholane)-24,24′-dipropargyl esters with aromatic diazides, or by cyclization-dimerization of bile acid derivatives possessing both azide and acetylene groups in the same molecule. 1,3-dipolar cycloaddition - azides - cholaphanes - copper - macrocycles