1-aryl/heteroaryl-[1,2,4]-triazolo[4,3-a]quinoxalin-4(5H)-ones (4) has been accomplished via iodobenzene diacetate mediated oxidative intramolecular cyclization of 3-(2-(aryl/heteroarylidene)hydrazinyl)-quinoxalin-2(1H)-ones (3). Ten synthesized compounds 3 and 4 (10-40 μg) on irradiation with UV light at λmax 312 nm could lead to cleavage of supercoiled pMaxGFP DNA (Form I) into the relaxed DNA (Form II) without any
通过
碘代苯二
乙酸酯介导的氧化性分子内合成1-芳基/杂芳基-[1,2,4]-三唑并[4,3-a]
喹喔啉-4(5H)-ones(4)的简便方法3-(2-(芳基/杂芳基)
肼基)-
喹喔啉-2(1H)-1的环化(3)。十个合成的化合物3和4(10-40μg)在λmax312 nm的紫外线照射下可能导致超螺旋pMaxGFP DNA(I型)裂解为松弛的DNA(II型),而没有任何添加剂。此外,对三唑的DNA切割能力进行了定量评估,发现其结构,浓度和严格取决于光辐照时间。