Synthesis, spectral characterization and biological evaluation of some copper(II) complexes containing 4-oxo-4H-chromene-3-carbaldehyde-4(N)-substituted thiosemicarbazones
作者:G. Kalaiarasi、S. Rex Jeya Rajkumar、S. Dharani、Vincent M. Lynch、R. Prabhakaran
DOI:10.1016/j.ica.2017.12.008
日期:2018.2
Abstract Four new water soluble chromone appended copper(II) complexes of the type [Cu(L)Cl] were synthesized from CuCl2·2H2O and 3-formylchromone-4N-substituted thiosemicarbazones (HL1–HL4). Characterization of the compounds was done by using analytical and spectral techniques such as elemental analyses, IR, UV–Visible, EPR and Mass spectrometry, which confirmed their formation. Single crystals suitable
Thiosemicarbazone(s)-anchored water soluble mono- and bimetallic Cu(<scp>ii</scp>) complexes: enzyme-like activities, biomolecular interactions, anticancer property and real-time live cytotoxicity
spectrometry study was carried out for complexes 1–4 in the presence of 3,5-DTBC. The phosphatase-like activity of 1–5 was also investigated using 4-nitrophenylphosphate (4-NPP) as a model substrate. All the complexes exhibited excellent phosphatase activity in DMF-H2O medium. The complexes displayed significant biomolecular interactions and antioxidant potential. Complex 3 showed good interaction with apoptotic
CuCl 2 ·2H 2 O与在末端N上含–H或–CH 3取代基的色酮硫代半碳杂配体反应生成单金属Cu(II)配合物[Cu(HL1)Cl 2 ](1)和[Cu(HL2)Cl 2 ](2),而双金属Cu(II)络合物[Cu(μ-Cl)(HL3)] 2 Cl 2(3),[Cu(μ-Cl)(HL4)] 2 Cl 2(4)和[当–C 2 H 5时,获得Cu(μ-Cl)(L5)] 2(5),-C 6 H 11或-C 6 H 5取代基分别存在于配体中。使用元素分析,UV-Vis,FT-IR,EPR,质量和TGA研究对复合物进行表征。单晶X射线衍射证实了中性单金属和双金属双金属配合物的结构,并且它们在Cu(II)离子周围呈现出扭曲的方形锥体形状。用分光光度法检测了配合物1-5的儿茶酚酶模拟活性,结果表明除5以外的所有配合物均具有将3,5-二叔丁基儿茶酚(3,5-DTBC)氧化为3,5-的能力。二叔丁基醌(3
Diosgenin derivatives developed from Pd(<scp>ii</scp>) catalysed dehydrogenative coupling exert an effect on breast cancer cells by abrogating their growth and facilitating apoptosis <i>via</i> regulating the AKT1 pathway
作者:S. Dharani、G. Kalaiarasi、M. Ravi、N. Sathan Raj、Vincent M. Lynch、R. Prabhakaran
DOI:10.1039/d2dt00514j
日期:——
Pd(ii) chromone Schiff base complex catalysed the dehydrogenative coupling of diosgenin and the obtained derivatives induced apoptosis by inhibiting AKT1 signaling pathway in breast cancer cells.
Synthesis, spectroscopic/electrochemical characterization, DNA/Protein binding studies and bioactivity assays of Ru(II) carbonyl complexes of 4-oxo-4H-chromene-3-carbaldehyde thiosemicarbazones
作者:G. Kalaiarasi、S. Dharani、S. Rex Jeya Rajkumar、Werner Kaminsky、R. Prabhakaran
DOI:10.1016/j.ica.2021.120470
日期:2021.9
Four Ru(II) carbonyl complexes of 4-oxo-4H-chromene-3-carbaldehyde thiosemicarbazones (C1-C4) were synthesized and characterized through spectroscopic techniques. The coordination behaviour of the ligands to the metal ion was confirmed by solving the single crystal X-ray structure of a representative complex C4, in which the ligand showed coordination via the C2 carbon of the chromone ring, the azomethine
4-oxo-4 H -chromene-3-carbaldehyde thiosemicarbazones ( C1 - C4 ) 的四种 Ru(II) 羰基配合物被合成并通过光谱技术表征。配体与金属离子的配位行为通过求解代表性配合物C4 的单晶 X 射线结构得到证实,其中配体通过色酮环的 C2 碳、偶氮甲碱氮和硫醇硫。与 DNA 和蛋白质的相互作用显示了复合物的良好结合特性。针对细菌和真菌菌株测试了复合物的抗微生物作用,观察到了显着活性。此外,对 A549 和 MCF-7 细胞系的 MTT 测定表明合成复合物的细胞毒性潜力,在类似的实验条件下克服了顺铂的活性。
Palladium-mediated C–O bond activation of benzopyrone in 4-oxo-4<i>H</i>-chromone-3-carbaldehyde-4(<i>N</i>)-substituted thiosemicarbazone: synthesis, structure, nucleic acid/albumin interaction, DNA cleavage, antioxidant and cytotoxic studies
作者:A. Shanmugapriya、G. Kalaiarasi、M. Ravi、H. A. Sparkes、P. Kalaivani、R. Prabhakaran
DOI:10.1039/d1nj04076f
日期:——
Palladium ion-mediated C–O activation at the C2 carbon of the benzopyrone moiety of 3-formylchromone-4(N)-substituted thiosemicarbazone (HL1–4) has been observed in square-planar palladium(II) complexes. All the complexes were characterised by IR, electronic, 1H-NMR, 13C-NMR and ESI mass spectroscopy. Further, the structure of complex 3 was confirmed by single-crystal X-ray diffraction studies, which
在方形平面钯 ( II ) 配合物中观察到钯离子介导的 C-O 活化在 3-甲酰基色酮-4( N )-取代的缩氨基硫脲 ( HL 1-4 )的苯并吡喃酮部分的 C2 碳上。所有配合物均通过红外光谱、电子光谱、1 H-NMR、13 C-NMR 和 ESI 质谱进行表征。此外,通过单晶 X 射线衍射研究证实了配合物3的结构,这揭示了使用硫醇硫和吡唑氮 N(1) 原子的配体与钯 ( II ) 离子的一价双齿配位。复合物的结合能力 ( 1–4) 与小牛胸腺 (CT-DNA) 和牛血清白蛋白 (BSA) 通过 UV-Vis 和荧光光谱进行了研究。此外,该复合物在不添加任何外部试剂的情况下切割超螺旋 DNA pBR322。对复合物的抗氧化活性进行了测试,发现它们表现出显着的活性。针对 MCF-7、A549、NCI-H460、L132 细胞系研究了复合物的细胞毒性性质,并证明了对癌细胞的显着生长抑制。使用倒置相差显微镜和