Highly active copper(<scp>i</scp>) complexes of aroylthiourea ligands against cancer cells – synthetic and biological studies
作者:Kumaramangalam Jeyalakshmi、Jebiti Haribabu、Chandrasekar Balachandran、Eswaramoorthi Narmatha、Nattamai S. P. Bhuvanesh、Shin Aoki、Suresh Awale、Ramasamy Karvembu
DOI:10.1039/c8nj04246b
日期:——
The reaction of copper(I) bromide with aroylthiourea ligands (L) in the molar ratio 1 : 3 resulted in the formation of [CuBr(L)3]. The complexes were well characterized by analytical and spectroscopic (UV-visible, FT-IR, NMR and mass) techniques. Tetrahedral geometry of complexes 1 and 3 was confirmed by single crystal X-ray diffraction study. The interaction of complexes with biomolecules (DNA/protein)
Synthesis of Ru(<scp>ii</scp>)–benzene complexes containing aroylthiourea ligands, and their binding with biomolecules and in vitro cytotoxicity through apoptosis
作者:Kumaramangalam Jeyalakshmi、Jebiti Haribabu、Chandrasekar Balachandran、Nattamai S. P. Bhuvanesh、Nobuhiko Emi、Ramasamy Karvembu
DOI:10.1039/c6nj03099h
日期:——
the formation of Ru(II) complexes of the type [RuCl2(η6-benzene)L] (L = monodentate aroylthiourea ligand). The complexes were well characterized using UV-Visible, FT-IR, NMR and mass spectroscopic techniques. Single crystal X-ray diffraction confirmed the monodentate coordination of the ligand through a sulfur atom. The interaction of the Ru(II) complexes with calf thymus DNA (CT DNA) was investigated
Half-sandwich RuCl<sub>2</sub>(η<sup>6</sup>-p-cymene) core complexes containing sulfur donor aroylthiourea ligands: DNA and protein binding, DNA cleavage and cytotoxic studies
作者:Kumaramangalam Jeyalakshmi、Jebiti Haribabu、Nattamai S. P. Bhuvanesh、Ramasamy Karvembu
DOI:10.1039/c6dt01167e
日期:——
series of Ru(II)(η6-p-cymene) complexes (1–4) bearing the general formula [RuCl2(η6-p-cymene)L] (L = monodentate aroylthiourea ligand) has been synthesized and characterized by analytical and various spectroscopic techniques. The neutral monodentate coordination of aroylthiourea with Ru via an S atom was confirmed by single crystal X-ray diffraction study. The complexes were tested for their ability
一系列的Ru(II)(η 6 - p -cymene)复合物(1-4)带有通式将[RuCl 2(η 6 - p -cymene)L](L =单齿配体aroylthiourea)已被合成和表征通过分析和各种光谱技术。通过单晶X射线衍射研究证实了芳硫基脲与Ru经由S原子的中性单齿配位。测试复合物与DNA和蛋白质相互作用的能力。与小牛胸腺DNA(CT DNA)结合的复合物,其固有结合常数值为10 4 M -1。溴化乙锭(EB)置换研究证实了结合的结合模式。粘度测量和圆二色性(CD)光谱进一步支持了复合物与CT DNA的相互作用。Ru(II)配合物可切割超螺旋DNA,而无需任何外部试剂。光谱证据表明该复合物与BSA(牛血清白蛋白)具有良好的结合功效。同步荧光光谱证实了Ru(II)配合物对BSA二级结构的改变。通过MTT测定法在两种癌细胞系(MCF7和A549)和一种非癌细胞系(L929)中进行了细
DNA/protein binding and cytotoxicity studies of copper(ii) complexes containing N,N′,N′′-trisubstituted guanidine ligands
作者:Kumaramangalam Jeyalakshmi、Nagamani Selvakumaran、Nattamai S. P. Bhuvanesh、Anantharaman Sreekanth、Ramasamy Karvembu
DOI:10.1039/c4ra01459f
日期:——
methods. Spectral evidence shows the intercalative mode of DNAbinding (in the order of 104 M−1) with the complexes. The Stern–Volmer quenching constant (Kq) values were found from competitive binding studies and found to be in the range of 1.07–1.30 × 105 M−1 for the complexes. Spectral evidence also shows good binding properties of the complexes with the protein. Complexes 3 and 4 showed significant cytotoxicity
一系列N,N ',N ''-三取代的胍配体(L1-L5)及其铜(II)配合物(1-5)[Cu(II)C 4 H 3 SCONC(NHR)NC 6 H 5 } 2 ] [其中R =对甲苯基(1),苯基(2)苄基(3),丁基(4)和环己基(5)]合成并通过元素分析和紫外可见FT-IR,1表征H&1313 C NMR / EPR和质谱技术。的分子结构L1-L5,3和5是通过单晶X-射线晶体学确认。配合物的单晶X射线结构显示出正方形的平面几何形状。用紫外可见和荧光分光光度法研究了小牛胸腺DNA(CT-DNA)和牛血清白蛋白(BSA)与铜(II)配合物的相互作用。光谱证据显示了配合物与DNA结合的插入模式(约为10 4 M -1)。斯特恩-沃尔默淬灭常数(K q)值是从竞争结合研究中发现的,发现该复合物的值在1.07-1.30×10 5 M -1的范围内。光谱证据还显示出复合物与蛋白质的良好结合特