Synthesis, structure, and biological activities of a new μ-oxamido-bridged dicopper(II) complex: the influence of hydrophobicity of bridging ligand on DNA binding and cytotoxic activities.

Abstract:

:A new μ-oxamido-bridged dicopper(II) complex, [Cu2 (papo)(H2 O)- (phen)]Cl·CH3 OH·H2 O, where H3 papo and phen represent N-(2-hydroxyphenyl)-N'-(3-aminopropyl)oxamide and 1,10-phenanthroline, respectively, has been synthesized and characterized by elemental analysis, molar conductivity measurement, infrared and electronic spectra studies, and single-crystal X-ray diffraction. The complex crystallizes in the triclinic space group P-1. Each copper(II) ion is located in a slightly distorted square-pyramidal environment. The Cu···Cu distance through the oxamide bridge is 5.1848(7) Å. The three-dimensional supramolecular structure is built-up by hydrogen bonds and π-π stacking interactions. The dicopper(II) complex exhibits cytotoxic activity against the SMMC-7721 and A549 cell lines. The reactivity toward herring sperm DNA and protein bovine serum albumin (BSA) reveals that the dicopper(II) complex can interact with the DNA by the intercalation mode, and effectively quench the intrinsic fluorescence of BSA via a static mechanism. The influence of hydrophobicity of the bridging ligand on DNA-binding properties and in vitro cytotoxic activities of this kind of dicopper(II) complexes was investigated.

journal_name

J Biochem Mol Toxicol

authors

Wang LD,Tao L,Li YT,Wu ZY,Yan CW

doi

10.1002/jbt.21670

subject

Has Abstract

pub_date

2015-02-01 00:00:00

pages

77-90

issue

2

eissn

1095-6670

issn

1099-0461

journal_volume

29

pub_type

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