Publicação: Novel copper(II) complexes with hydrazides and heterocyclic bases: Synthesis, structure and biological studies
Carregando...
Data
2017-07-01
Orientador
Coorientador
Pós-graduação
Curso de graduação
Título da Revista
ISSN da Revista
Título de Volume
Editor
Tipo
Artigo
Direito de acesso
Acesso aberto
Resumo
Five new copper(II) complexes of the type [Cu(N[sbnd]O)(N[sbnd]N)(ClO4)2], in which N[sbnd]O = 4-fluorophenoxyacetic acid hydrazide (4-FH) or 4-nitrobenzoic hydrazide (4-NH) and N[sbnd]N = 1,10-phenanthroline (phen), 4–4′-dimethoxy-2-2′-bipyridine (dmb) or 2,2-bipyridine (bipy) were synthesized and characterized using various spectroscopic methods. The X-ray structural analysis of one representative compound indicates that the geometry around the copper ion is distorted octahedron, in which the ion is coordinated to hydrazide via the terminal nitrogen and the carbonyl oxygen, and to heterocyclic bases via their two nitrogen atoms. Two perchlorate anions occupy the apical positions, completing the coordination sphere. The cytotoxic activity of compounds was investigated in three tumor cell lines (K562, MDA-MB-231 and MCF-7). Concerning K562 cell line, the complexes with 1,10-phenanthroline exhibit high cytotoxic activity and are more active than carboplatin, free ligands and [Cu(phen)2]2 +. Considering the cytotoxicity results, further investigations for the compounds [Cu(4-FH)(phen)(ClO4)2] I and [Cu(4-NH)(phen)(ClO4)2]∙H2O III were performed. Flow cytometric analysis revealed that these complexes induce apoptotic cell death in MDA-MB-231 cell line and bind to DNA with K values of 4.38 × 104 and 2.62 × 104, respectively. These compounds were also evaluated against wild type Mycobacterium tuberculosis (ATCC 27294) and exhibited antimycobacterial activity, displayed MIC values lower than those of the corresponding free ligands.
Descrição
Palavras-chave
Idioma
Inglês
Como citar
Journal of Inorganic Biochemistry, v. 172, p. 138-146.
