Abstract

A mononuclear complex Cu(L1)₂·CH₃OH·H₂O (L1: 3,5-dibromo-L-tyrosine) was synthesized and characterized by IR, elemental analysis, and X-ray diffraction single-crystal analysis. Each Cu²⁺ ion is four-coordinated by two nitrogen atoms and two (carboxylic) oxygen atoms L1. Theoretical calculation of the title complex was performed by density functional theory (DFT) B3LYP method using the 6-3 l + G* basis set. Additionally, the interaction between calf thymus DNA(CT-DNA) and the complex was investigated by electrochemical methods and UV absorption spectra. And the supercoiled plasmid DNA pBR322 cleavage by the complex was investigated. The complex shows significant activity to bind to DNA and cleavage DNA.

摘要

合成了一种单核配合物Cu(L1) ₂ ·CH ₃ OH·H ₂ O（L1：3,5-二溴-L-酪氨酸），并通过红外、元素分析和X射线衍射单晶分析对其进行了表征。每个Cu ²⁺离子由两个氮原子和两个（羧基）氧原子L1四配位。标题复合物的理论计算是通过密度泛函理论 (DFT) B3LYP 方法使用 6-3 l + G* 基组进行的。此外，通过电化学方法和紫外吸收光谱研究了小牛胸腺DNA(CT-DNA)与复合物之间的相互作用。并研究了复合物对超螺旋质粒 DNA pBR322 的切割。该复合物显示出与 DNA 结合和切割 DNA 的显着活性。