Synthesis, structures and the biological activity study on the metal complexes of 2-(4-aminophenyl)benzothiazole derivative
作者:Guo-Wu Lin、Yue Wang、Qiao-Mei Jin、Tao-Tao Yang、Jie-Mei Song、Yi Lu、Qing-Jie Huang、Ke Song、Jun Zhou、Tao Lu
DOI:10.1016/j.ica.2011.10.004
日期:2012.3
(2-(4-(Benzothiazole)phenyl)carbamoylmethyl) iminodiacetic acid (ZL-5) was synthesized and then its three metal complexes were prepared with structures determined by H-1 NMR or X-ray. In all complexes, ZL-5 is deprotonated to generate the neutral complex unit and acts as a tetradentate ligand, providing iminodiacetic N atom and three O atoms to bond with metal ions. Meantime we studied on the interaction of complexes with DNA by ultraviolet spectrum and fluorescent spectrum. Also the cleavage abilities of the complexes on plasmid pBR 322 DNA were studied by gel electrophoresis. We deduce the Co(II) complex 1 with the largest planar structure has the strongest DNA binding ability mainly by the intercalation mode, while the Cu(II) complex 2 with the coordinated water cut the DNA most effectively. And in the oxidative cleavage process of all complexes, the hydroxyl radical is produced which can be captured by DMSO. (C) 2011 Elsevier B. V. All rights reserved.
(2-(4-(苯并噻二唑基)苯基)羰基甲基)乙二胺四乙酸(ZL-5)被合成,然后制备了它的三种金属配合物,并用H-1 NMR或X射线确定其结构。在所有配合物中,ZL-5脱质子生成中性配合物单元,并作为四齿配体,提供乙二胺四乙酸的N原子和三个O原子与金属离子结合。同时,我们通过紫外光谱和荧光光谱研究了配合物与DNA的相互作用。此外,我们还通过凝胶电泳研究了配合物对质粒pBR 322 DNA的切割能力。我们推断,具有最大平面结构的Co(II)配合物1主要通过嵌入模式具有最强的DNA结合能力,而具有配位水的Cu(II)配合物2最有效地切割DNA。在所有配合物的氧化切开过程中,会生成羟基自由基,其可被DMSO捕捉。©2011 Elsevier B.V. 保留所有权利。