Dissymmetric thiosemicarbazone ligands containing substituted aldehyde arm and their ruthenium(II) carbonyl complexes with PPh3/AsPh3 as ancillary ligands: Synthesis, structural characterization, DNA/BSA interaction and in vitro anticancer activity
the ruthenium(II) carbonyl complexes (2, 4) have been analyzed by single crystal X-ray studies, and found that the ruthenium(II) complexes possess a distorted octahedral geometry. The DNA binding studies such as emissive titration, Ethidium bromide/Methylene blue (EB/MB) displacement assay and viscometry measurements revealed that the ruthenium(II) complexes bound with calf thymus DNA through intercalative
一个严重的新不对称钌(II)的类型的羰基配合物的[Ru(CO)(EPH 3)(L1 - 2)](1 - 4),[E = P或As; L 1 = N 4-(2-羟基-5-氯亚苄基)-2-氨基-5-氯二苯甲酮硫半脲;已经合成了L 2 = N 4-(2-羟基萘-1-甲醛)-2-氨基-5-氯二苯甲酮硫代半氨基甲酸酯,并通过一些光谱研究对其进行了表征。该配体的分子结构L1和钌(II)羰基配合物(2,4)已通过单晶X射线研究进行了分析,发现钌(II)配合物具有扭曲的八面体几何形状。DNA结合研究,例如发射滴定,溴化乙锭/亚甲基蓝(EB / MB)位移测定和粘度测定法,表明钌(II)配合物通过插层模式与小牛胸腺DNA结合,具有相对较高的结合常数。此外,还使用荧光光谱法研究了该复合物与牛血清白蛋白(BSA)的相互作用,这表明新的复合物可以与BSA牢固结合。配合物(1 - 4)测试了DNA和BSA的
Synthesis and molecular modeling study of Cu(II) complexes derived from 2-(diphenylmethylene)hydrazinecarbothioamide derivatives with cholinesterase inhibitory activities
Thiosemicarbazones of 2-amino-5-chlorobenzophenone and 3-aminobenzophenone (L-1-L-4) have been synthesized and their Cu(II) complexes (1-4) were afforded via coordination with cupric chloride. All these compounds were characterized by UV-vis and IR spectroscopy together with CHN elemental analysis. NMR spectroscopy was also applied to characterize the ligands. In vitro cholinesterase inhibitory assays for the complexes (1-4) showed IC50 values less than 10 mu mol/L, with complex 1 exhibiting the most activity, IC50 = 2.15 mu mol/L and 2.16 mu mol/L for AChE and BuChE, respectively. Molecular modeling simulation revealed the binding interaction template for complex 1 with the AChE and BuChE receptors. In DPPH assay, the complexes also showed more in vitro antioxidant activities in comparison to their parent ligands. (C) 2013 Abdussalam Salhin Mohamed Ali. Published by Elsevier B.V. on behalf of Chinese Chemical Society. All rights reserved.