Copper complexes of pyridyl–tetrazole ligands with pendant amide and hydrazide arms: synthesis, characterization, DNA-binding and antioxidant properties
作者:Santhosh Reddy Kasi Reddy、Surendrababu Manabolu Surya、Mustafa Shaik、Phani Raja Kanuparthy
DOI:10.1007/s11243-016-0047-2
日期:2016.8
corresponding complexes [Cu(L1)2]–[Cu(L4)2]. EPR spectra of the complexes are characteristic of square planar geometries, with nuclear hyperfine spin 3/2. DNA-binding studies using UV–Vis absorption spectroscopy, viscosity and thermal denature studies revealed that all of these complexes are avid binders of calf thymus DNA. The antioxidant properties of the free ligands and the Cu(II) complexes were investigated
吡啶基-四唑配体 2-(5-(pyridin-2-yl)-1H-tetrazol-1-yl)乙酰胺 (L1), 2-(5-(pyridin-2-yl)-2H-tetrazol-2-yl )乙酰胺 (L2), 2-(5-(pyridin-2-yl)-1H-tetrazol-1-yl)acetohydrazide (L3) 和 2-(5-(pyridin-2-yl)-2H-tetrazol-2 -yl) acetohydrazide (L4) 已制备并与 CuCl2·2H2O 配位以提供相应的配合物 [Cu(L1)2]–[Cu(L4)2]。复合物的 EPR 光谱具有方形平面几何特征,核超精细自旋 3/2。使用 UV-Vis 吸收光谱、粘度和热变性研究的 DNA 结合研究表明,所有这些复合物都是小牛胸腺 DNA 的狂热结合物。使用对亚硝基二甲基苯胺羟基自由基清除方法研究了游离配体和 Cu(II)