Synthesis and characterization of nitrile functionalized silver(I)-N-heterocyclic carbene complexes: DNA binding, cleavage studies, antibacterial properties and mosquitocidal activity against the dengue vector, Aedes albopictus
作者:Patrick O. Asekunowo、Rosenani A. Haque、Mohd. R. Razali、Silas W. Avicor、Mustafa F.F. Wajidi
DOI:10.1016/j.ejmech.2018.03.029
日期:2018.4
compound, 8b, could effectively intercalate into DNA to form 8b–DNA complex which shows a better binding ability for DNA (Kb = 3.627 × 106) than the complexes 5b–7b (2.177 × 106, 8.672 × 105 and 6.665 × 105, respectively). Nuclease activity of the complexes on plasmid DNA and Aedes albopictus genomic DNA was time-dependent, although minimal. The complexes were larvicidal to the mosquito, with 5b, 6b and
合成了四种基于苯并咪唑的腈基官能化单核-Ag (I)-N-杂环卡宾和双核-Ag(I)-N-杂环卡宾(Ag(I)-NHC)六氟磷酸盐配合物(5b - 8b)使相应的六氟磷酸盐(1b – 4b)与Ag 2 O在乙腈中反应。这些化合物的特征在于1 H NMR,13 C NMR,IR,紫外可见光谱技术,元素分析和摩尔电导率。另外,通过单晶X射线衍射技术对8b进行结构表征。初步体外对所有化合物针对两种标准细菌进行了抗菌评估;革兰氏阳性(金黄色葡萄球菌)和革兰氏阴性(大肠杆菌)菌株。大多数Ag(I)–NHC复合物(5b – 8b)表现出中等至良好的抗菌活性,MIC值在12.5–100μg/ mL的范围内。特别是,化合物8b表现出有希望的抗金黄色葡萄球菌活性,且MIC值低(12.5μg/ mL)。但是,所有六氟磷酸盐(1b - 4b)对细菌菌株均无活性。初步的互动调查显示,活性最高的化合物8b能有效地插入DNA,以形成图8b