1
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Singh O, Singh A, Maji A, Chauhan R, Gupta P, Ghosh K. Crystal structure of a phenoxyl radical complex relevant to the metal site of the galactose oxidase enzyme: A facile one-pot synthesis, evidence for hydrogen atom transfer and DNA cleavage via self-activation. Dalton Trans 2024; 53:986-995. [PMID: 38088032 DOI: 10.1039/d3dt03282e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2024]
Abstract
Copper complexes [Cu(L1H)ClO4] (1) and [Cu(L2)NO3] (2), which are relevant to the metal site of the galactose oxidase enzyme, were synthesized and characterized by different spectroscopic methods. L1H2 and L2H2 [where L1H2 stands for 2,2'-((1E,1'E)(2,2'-(pyridine-2,6-diyl)bis(2-phenylhydrazin-2-yl-1-ylidene))bis(methanylylidene))diphenol and L2H2 stands for 6,6'-((1E,1'E)-(2,2'-(pyridine-2,6-diyl)bis(2-phenylhydrazin-2-yl-1-ylidene))bis(methanylylidene))bis(2,4-di-tert-butylphenol), H stands for dissociable proton] are pentadentate ligands. These ligands provide pyridyl N, two imine N, and two non-innocent phenoxyl and phenolato O donors, forming complex 1 as a non-radical complex, while complex 2 is a phenoxyl radical complex. The molecular structures of complexes 1 and 2 were authenticated by X-ray crystallography. Benzyl alcohol oxidation was investigated, and the conversion of 9,10-dihydroanthracene to anthracene was examined to scrutinize the H-atom abstraction reaction. Nuclease activity with complexes 1 and 2 was investigated by self-activated plasmid DNA (pBR322) cleavage. Non-innocent properties of the ligand-containing phenolato function were investigated by DFT calculations.
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Affiliation(s)
- Ovender Singh
- Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee-247667, Uttarakhand, India.
| | - Anshu Singh
- Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee-247667, Uttarakhand, India.
| | - Ankur Maji
- Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee-247667, Uttarakhand, India.
| | - Rahul Chauhan
- Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee-247667, Uttarakhand, India.
| | - Puneet Gupta
- Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee-247667, Uttarakhand, India.
| | - Kaushik Ghosh
- Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee-247667, Uttarakhand, India.
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2
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Yang P, Mahmoud ME, Xiang Y, Lin Z, Ma X, Christian JH, Bindra JK, Kinyon JS, Zhao Y, Chen C, Nisar T, Wagner V, Dalal NS, Kortz U. Host–Guest Chemistry in Discrete Polyoxo-12-Palladate(II) Cubes [MO 8Pd 12L 8] n− (M = Sc III, Co II, Cu II, L = AsO 43 –; M = Cd II, Hg II, L = PhAsO 32–): Structure, Magnetism, and Catalytic Hydrogenation. Inorg Chem 2022; 61:18524-18535. [DOI: 10.1021/acs.inorgchem.2c02751] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Peng Yang
- School of Science, Jacobs University, Campus Ring 1, 28759 Bremen, Germany
- College of Chemistry and Chemical Engineering, Advanced Catalytic Engineering Research Center of the Ministry of Education, Hunan University, 410082 Changsha, P. R. China
| | | | - Yixian Xiang
- School of Science, Jacobs University, Campus Ring 1, 28759 Bremen, Germany
| | - Zhengguo Lin
- School of Science, Jacobs University, Campus Ring 1, 28759 Bremen, Germany
- College of Chemistry and Materials Science, Hebei Normal University, 050024 Shijiazhuang, P. R. China
| | - Xiang Ma
- School of Science, Jacobs University, Campus Ring 1, 28759 Bremen, Germany
| | - Jonathan H. Christian
- Department of Chemistry and Biochemistry, Florida State University, Tallahassee, Florida 32306, United States
| | - Jasleen K. Bindra
- Department of Chemistry and Biochemistry, Florida State University, Tallahassee, Florida 32306, United States
| | - Jared S. Kinyon
- Department of Chemistry and Biochemistry, Florida State University, Tallahassee, Florida 32306, United States
| | - Yue Zhao
- College of Chemistry and Chemical Engineering, Advanced Catalytic Engineering Research Center of the Ministry of Education, Hunan University, 410082 Changsha, P. R. China
| | - Chaoqin Chen
- College of Chemistry and Chemical Engineering, Advanced Catalytic Engineering Research Center of the Ministry of Education, Hunan University, 410082 Changsha, P. R. China
| | - Talha Nisar
- School of Science, Jacobs University, Campus Ring 1, 28759 Bremen, Germany
| | - Veit Wagner
- School of Science, Jacobs University, Campus Ring 1, 28759 Bremen, Germany
| | - Naresh S. Dalal
- Department of Chemistry and Biochemistry, Florida State University, Tallahassee, Florida 32306, United States
| | - Ulrich Kortz
- School of Science, Jacobs University, Campus Ring 1, 28759 Bremen, Germany
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3
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Liu RX, Luo RY, Tang MT, Liu YC, Chen ZF, Liang H. The first copper(I) complex of anthrahydrazone with potential ROS scavenging activity showed significant in vitro anticancer activity by inducing apoptosis and autophagy. J Inorg Biochem 2021; 218:111390. [PMID: 33721719 DOI: 10.1016/j.jinorgbio.2021.111390] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2020] [Revised: 02/06/2021] [Accepted: 02/07/2021] [Indexed: 12/26/2022]
Abstract
Based on the anticancer pharmacophore of anthrahydrazone and quinoline, a new quinolylanthrahydrazone ligand, 9-AQH (anthracene-9-quinolylhydrazone), was synthesized to further afford four metal complexes, [CoII(9-AQH)(NO3)2(H2O)] (1), [NiII(9-AQH)2(H2O)2]·2NO3 (2), [CuI(9-AQH)2]·NO3 (3), [ZnII(9-AQH)2(NO3)]·NO3 (4), determined by X-ray single crystal diffraction analysis. The reaction of Cu(NO3)2 with 9-AQH formed the stable and repeatable copper(I) complex 3. In vitro screening demonstrated only 3 showed significant and broad-spectrum anticancer activity, indicating that Cu(I) played a key role in exerting the anticancer activity. In solution, Cu(I) was not naturally oxidized to Cu(II) suggested by 1H-NMR (Nuclear Magnetic Resonance) and EPR (Electron Paramagnetic Resonance) analysis. The presence of 3 could also catalyze the H2O2 system to give hydroxyl free radicals, suggested by further EPR and electrophoresis assay. At the cellular level, although no obvious Cu(II) signals were detected and the total ROS (Reactive Oxygen Species) scavenging in the tumor cells treated with 3, the potential redox property between Cu(I)/Cu(II), as a key role, should not be denied for the significant anticancer activity of 3, considering the much complicated circumstance and other reductive substances in cells. The anticancer mechanism of 3 on the most sensitive MGC-803 cells pointed to significant cell apoptosis through mitochondrial pathway, rather than cell cycle arrest. While the autophagy observed in tumor cells treated by 3 suggested its complicated anticancer mechanism, and whether there was an intrinsic correlation still needed to be further investigated.
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Affiliation(s)
- Rui-Xue Liu
- School of Chemistry & Pharmaceutical Sciences, State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources, Guangxi Normal University, Guilin 541004, PR China
| | - Ru-Yi Luo
- School of Chemistry & Pharmaceutical Sciences, State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources, Guangxi Normal University, Guilin 541004, PR China
| | - Meng-Ting Tang
- School of Chemistry & Pharmaceutical Sciences, State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources, Guangxi Normal University, Guilin 541004, PR China
| | - Yan-Cheng Liu
- School of Chemistry & Pharmaceutical Sciences, State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources, Guangxi Normal University, Guilin 541004, PR China.
| | - Zhen-Feng Chen
- School of Chemistry & Pharmaceutical Sciences, State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources, Guangxi Normal University, Guilin 541004, PR China
| | - Hong Liang
- School of Chemistry & Pharmaceutical Sciences, State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources, Guangxi Normal University, Guilin 541004, PR China.
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4
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Investigating reactivity and electronic structure of copper(II)-polypyridyl complexes and hydrogen peroxide. Inorganica Chim Acta 2021. [DOI: 10.1016/j.ica.2020.120168] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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5
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H. Haeri H, Jerschabek V, Sadeghi A, Hinderberger D. Copper–Calcium Poly(Acrylic Acid) Composite Hydrogels as Studied by Electron Paramagnetic Resonance (EPR) Spectroscopy. MACROMOL CHEM PHYS 2020. [DOI: 10.1002/macp.202000262] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Haleh H. Haeri
- Institut für Chemie Martin‐Luther‐Universität Halle‐Wittenberg Von‐Danckelmann‐Platz 4 Halle (Saale) 06120 Germany
| | - Vanessa Jerschabek
- Institut für Chemie Martin‐Luther‐Universität Halle‐Wittenberg Von‐Danckelmann‐Platz 4 Halle (Saale) 06120 Germany
| | - Arash Sadeghi
- Institut für Chemie Martin‐Luther‐Universität Halle‐Wittenberg Von‐Danckelmann‐Platz 4 Halle (Saale) 06120 Germany
| | - Dariush Hinderberger
- Institut für Chemie Martin‐Luther‐Universität Halle‐Wittenberg Von‐Danckelmann‐Platz 4 Halle (Saale) 06120 Germany
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6
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Molton F. Simultispin: A versatile graphical user interface for the simulation of solid-state continuous wave EPR spectra. MAGNETIC RESONANCE IN CHEMISTRY : MRC 2020; 58:718-726. [PMID: 32173891 DOI: 10.1002/mrc.5019] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2019] [Revised: 01/31/2020] [Accepted: 03/09/2020] [Indexed: 06/10/2023]
Abstract
Solid-state continuous wave (cw) electronic paramagnetic resonance (EPR) spectroscopy is particularly suitable for metal complex analysis. Extracting magnetic parameters by simulation is often necessary to describe the electronic structure of the studied molecular compounds that can have various electronic spin states and characterized by different parameters like g-values, hyperfine coupling or zero field splitting values. Easyspin toolbox on MATLAB is a powerful tool, but for the user, it requires spending time with coding and could discourage nonexperts. Facing this context, we have developed a graphical user interface called Simultispin, dedicated to solid-state cw-EPR spectra simulation. Some examples of experimental spectra of metal complexes (mixture of low spin and high spin FeIII complexes, dynamic disorder of a CuII complex, photogeneration of a MnIII complex), highlighting specific solid-state functions, are described and analyzed based on simulations performed with Simultispin. We hope that its ergonomy and the ease to set up a complete set of parameters to get reliable simulations could help a large EPR community to improve the efficiency of their interpretations.
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Affiliation(s)
- Florian Molton
- Department of Molecular Chemistry, Grenoble Alpes University, Grenoble, France
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7
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Ikbal SA, Colomban C, Zhang D, Delecluse M, Brotin T, Dufaud V, Dutasta JP, Sorokin AB, Martinez A. Bioinspired Oxidation of Methane in the Confined Spaces of Molecular Cages. Inorg Chem 2019; 58:7220-7228. [PMID: 31081621 DOI: 10.1021/acs.inorgchem.9b00199] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Non-heme iron, vanadium, and copper complexes bearing hemicryptophane cavities were evaluated in the oxidation of methane in water by hydrogen peroxide. According to 1H nuclear magnetic resonance studies, a hydrophobic hemicryptophane cage accommodates a methane molecule in the proximity of the oxidizing site, leading to an improvement in the efficiency and selectivity for CH3OH and CH3OOH compared to those of the analogous complexes devoid of a hemicryptophane cage. While copper complexes showed low catalytic efficiency, their vanadium and iron counterparts exhibited higher turnover numbers, ≤13.2 and ≤9.2, respectively, providing target primary oxidation products (CH3OH and CH3OOH) as well as over-oxidation products (HCHO and HCOOH). In the case of caged vanadium complexes, the confinement effect was found to improve either the selectivity for CH3OH and CH3OOH (≤15%) or the catalytic efficiency. The confined space of the hydrophobic pocket of iron-based supramolecular complexes plays a significant role in the improvement of both the selectivity (≤27% for CH3OH and CH3OOH) and the turnover number of methane oxidation. These results indicate that the supramolecular approach is a promising strategy for the development of efficient and selective bioinspired catalysts for the mild oxidation of methane to methanol.
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Affiliation(s)
- Sk Asif Ikbal
- Institut de Recherches sur la Catalyse et l'Environnement de Lyon (IRCELYON), UMR 5256 , CNRS-Université Lyon , 69626 Villeurbanne Cedex, France
| | - Cédric Colomban
- Aix Marseille Univ. , Centrale Marseille, CNRS, iSm2 UMR 7313 , 13397 Marseille , France
| | - Dawei Zhang
- Laboratoire de Chimie , École Normale Supérieure de Lyon, CNRS, UCBL , 46 allée d'Italie , F-69364 Lyon , France
| | - Magalie Delecluse
- Aix Marseille Univ. , Centrale Marseille, CNRS, iSm2 UMR 7313 , 13397 Marseille , France
| | - Thierry Brotin
- Laboratoire de Chimie , École Normale Supérieure de Lyon, CNRS, UCBL , 46 allée d'Italie , F-69364 Lyon , France
| | - Véronique Dufaud
- Laboratoire de Chimie, Catalyse, Polymères, Procédés (C2P2), UMR5265, CNRS , Université Claude Bernard Lyon 1, CPE Lyon , 43 Bd du 11 novembre 1918 , F-69616 Villeurbanne Cedex, France
| | - Jean-Pierre Dutasta
- Laboratoire de Chimie , École Normale Supérieure de Lyon, CNRS, UCBL , 46 allée d'Italie , F-69364 Lyon , France
| | - Alexander B Sorokin
- Institut de Recherches sur la Catalyse et l'Environnement de Lyon (IRCELYON), UMR 5256 , CNRS-Université Lyon , 69626 Villeurbanne Cedex, France
| | - Alexandre Martinez
- Aix Marseille Univ. , Centrale Marseille, CNRS, iSm2 UMR 7313 , 13397 Marseille , France
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8
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Rajput A, Saha A, Barman SK, Lloret F, Mukherjee R. [Cu II{(L ISQ)˙ -} 2] (H 2L: thioether-appended o-aminophenol ligand) monocation triggers change in donor site from N 2O 2 to N 2O (2)S and valence-tautomerism. Dalton Trans 2019; 48:1795-1813. [PMID: 30644480 DOI: 10.1039/c8dt03778g] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Using a potentially tridentate o-aminophenol-based redox-active ligand H2L1 (2-[2-(benzylthio)phenylamino]-4,6-di-tert-butylphenol) in its deprotonated form, [Cu(L1)2] has been synthesized and crystallized as [CuII(L1)2]·CH2Cl2 (1·CH2Cl2). A cyclic voltammetry experiment (in CH2Cl2; V vs. SCE (saturated calomel electrode)) on 1·CH2Cl2 exhibits two oxidative (E = 0.20 V (peak-to-peak separation, ΔEp = 100 mV) and E = 0.90 V (ΔEp = 140 mV)) and two reductive (E = -0.52 V (ΔEp = 110 mV) and E = -0.92 V (ΔEp = 120 mV)) responses. Upon oxidation using a stoichiometric amount of [FeIII(η5-C5H5)2](PF6), 1·CH2Cl2 yielded [Cu(L1)2](PF6) (2). Structural analysis (100 K) reveals that 1·CH2Cl2 is a four-coordinate bis(iminosemiquinonato)copper(ii) complex (CuN2O2 coordination), and that the thioethers remain uncoordinated. The twisted geometry of 1 (distorted tetrahedral) results in considerable changes in the electronic structure, compared to well-known square-planar analogues. Crystallographic analysis of 2 both at 100 K and at 293 K reveals that it is effectively a four-coordinate complex with a CuN2OS coordination; however, a substantial interaction with the other phenolate O is observed. The metal-ligand bond distances and metric parameters associated with the o-aminophenolate rings indicate a valence-tautomeric (VT) equilibrium involving monocationic (iminosemiquinonato)(iminoquinone)copper(ii) and bis(iminoquinone)copper(i). Complex 1·CH2Cl2 is a three-spin system and a magnetic study (4-300 K) established that it has a S = 1/2 ground-state, owing to the strong antiferromagnetic coupling between the unpaired spin of the copper(ii) and the iminosemiquinonate(1-) π-radical anion. Electron paramagnetic resonance (EPR) spectral studies corroborate this result. Complex 2 is diamagnetic and the existence of VT in 2 was probed using variable-temperature (248-328 K) 1H NMR and EPR (100-298 K) spectral measurements and X-ray photoelectron spectroscopic studies at 298 K. Remarkably, modification of the well-studied 2-anilino-4,6-di-tert-butylphenol by incorporation of a benzylthioether arm leads to the occurrence of VT in 2. The electronic structure of 1·CH2Cl2 and 2 has been assigned using density functional theory (DFT) calculations at the B3LYP-D3 level of theory. Time-dependent (TD)-DFT calculations have been performed to elucidate the origin of the observed UV-VIS-NIR absorptions.
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Affiliation(s)
- Amit Rajput
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208 016, India. and Department of Basic and Applied Sciences, School of Engineering, G. D. Goenka University, Sohna Road, Gurugram 122 103, Haryana, India
| | - Anannya Saha
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur 741 246, India
| | - Suman K Barman
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208 016, India.
| | - Francesc Lloret
- Departament de Quımíca, Inorgànica/Instituto de Ciencia Molecular (ICMOL), Universitat de Valeńcia, Polígono de la Coma, s/n, 46980-Paterna, València, Spain
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9
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Rad-Yousefnia N, Shaabani B, Korabik M, Weselski M, Zahedi M, Englert U, Bikas R, Szeliga D, Otręba M, Lis T. Magnetic dimensionality and the crystal structure of two copper(ii) coordination polymers containing Cu6 and Cu2 building units. Dalton Trans 2019; 48:11421-11432. [DOI: 10.1039/c9dt01728c] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The preparation, structural characterization, EPR spectroscopy and magnetic structural correlation of two Cu(ii) coordination polymers are reported.
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Affiliation(s)
- Negar Rad-Yousefnia
- Department of Inorganic Chemistry
- Faculty of Chemistry
- University of Tabriz
- Tabriz
- Iran
| | - Behrouz Shaabani
- Department of Inorganic Chemistry
- Faculty of Chemistry
- University of Tabriz
- Tabriz
- Iran
| | - Maria Korabik
- Faculty of Chemistry
- University of Wroclaw
- Wroclaw 50-383
- Poland
| | - Marek Weselski
- Faculty of Chemistry
- University of Wroclaw
- Wroclaw 50-383
- Poland
| | - Mansoureh Zahedi
- Department of Inorganic Chemistry
- Faculty of Chemistry
- University of Tabriz
- Tabriz
- Iran
| | - Ulli Englert
- Institute of Inorganic Chemistry
- RWTH Aachen University
- 52074 Aachen
- Germany
| | - Rahman Bikas
- Department of Chemistry
- Faculty of Science
- Imam Khomeini International University
- Qazvin
- Iran
| | - Daria Szeliga
- Faculty of Chemistry
- University of Wroclaw
- Wroclaw 50-383
- Poland
| | - Marta Otręba
- Faculty of Chemistry
- University of Wroclaw
- Wroclaw 50-383
- Poland
| | - Tadeusz Lis
- Faculty of Chemistry
- University of Wroclaw
- Wroclaw 50-383
- Poland
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10
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Jiang SP, Lu WQ, Liu Z, Wang GW. Synthesis of Fullerotetrahydroquinolines via [4 + 2] Cycloaddition Reaction of [60]Fullerene with in Situ Generated Aza-o-quinone Methides. J Org Chem 2018; 83:1959-1968. [DOI: 10.1021/acs.joc.7b02897] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Sheng-Peng Jiang
- CAS
Key Laboratory of Soft Matter Chemistry, iChEM (Collaborative
Innovation Center of Chemistry for Energy Materials), Hefei National
Laboratory for Physical Sciences at Microscale, and Department of
Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Wen-Qiang Lu
- CAS
Key Laboratory of Soft Matter Chemistry, iChEM (Collaborative
Innovation Center of Chemistry for Energy Materials), Hefei National
Laboratory for Physical Sciences at Microscale, and Department of
Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Zhan Liu
- CAS
Key Laboratory of Soft Matter Chemistry, iChEM (Collaborative
Innovation Center of Chemistry for Energy Materials), Hefei National
Laboratory for Physical Sciences at Microscale, and Department of
Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Guan-Wu Wang
- CAS
Key Laboratory of Soft Matter Chemistry, iChEM (Collaborative
Innovation Center of Chemistry for Energy Materials), Hefei National
Laboratory for Physical Sciences at Microscale, and Department of
Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
- State
Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou, Gansu 730000, P. R. China
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11
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Bhat SS, Revankar VK, Kumbar V, Bhat K, Kawade VA. Synthesis, crystal structure and biological properties of a cis-dichloridobis(diimine)copper(II) complex. ACTA CRYSTALLOGRAPHICA SECTION C-STRUCTURAL CHEMISTRY 2018; 74:146-151. [PMID: 29400328 DOI: 10.1107/s2053229617018551] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2017] [Accepted: 12/31/2017] [Indexed: 11/10/2022]
Abstract
The mechanisms of interaction of inorganic complexes with DNA are important in the design and development of new metal-based drug molecules. The limitations of cis-platin have encouraged the design and development of new metal-based target-specific anticancer drugs having reduced side effects. The complex cis-dichloridobis(1,2,5-thiadiazolo[3,4-f][1,10]phenanthroline-κ2N1,N10)copper(II), [CuCl2(C12H6N4S)2], has been synthesized and characterized. The complex crystallizes in the monoclinic space group C2/c. The covalent binding of the complex with DNA was studied by absorption spectroscopy. The anticancer activity of the complex on the Human Lung Carcinoma (A549) cell line was investigated by MTT assay. The complex exhibits higher toxicity than cis-platin and induces an apoptotic mode of cell death.
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Affiliation(s)
- Satish S Bhat
- Department of Chemistry, Karnatak University, Pavate Nagar, Dharwad, Karnataka 580 003, India
| | - Vidyanand K Revankar
- Department of Chemistry, Karnatak University, Pavate Nagar, Dharwad, Karnataka 580 003, India
| | - Vijay Kumbar
- Department of Microbiology, Maratha Mandal's NGH Institute of Dental Sciences & Research Centre, RS No. 47A/2, Bauxite Road, Belgaum, Karnataka 590 010, India
| | - Kishore Bhat
- Department of Microbiology, Maratha Mandal's NGH Institute of Dental Sciences & Research Centre, RS No. 47A/2, Bauxite Road, Belgaum, Karnataka 590 010, India
| | - Vitthal A Kawade
- Department of Chemistry, Ahmednagar College, Ahmednagar, Maharashtra 414 001, India
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12
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Gurudevaru C, Gopalakrishnan M, Senthilkumar K, Hemachandran H, Siva R, Srinivasan T, Velmurugan D, Shanmugan S, Palanisami N. Synthesis and structural and DNA binding studies of mono‐ and dinuclear copper(II) complexes constructed with ─O and ─N donor ligands: Potential anti‐skin cancer drugs. Appl Organomet Chem 2017. [DOI: 10.1002/aoc.3998] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Champaka Gurudevaru
- Department of Chemistry, School of Advanced SciencesVIT University Vellore 632014 Tamil Nadu India
| | - Mohan Gopalakrishnan
- Department of Chemistry, School of Advanced SciencesVIT University Vellore 632014 Tamil Nadu India
- Department of ChemistryKarpagam University Coimbatore 641021 Tamil Nadu India
| | - Kabali Senthilkumar
- Department of Chemistry, School of Advanced SciencesVIT University Vellore 632014 Tamil Nadu India
| | | | - Ramamoorthy Siva
- School of Biosciences and TechnologyVIT University Vellore Tamil Nadu India
| | - Thothadri Srinivasan
- CAS in Crystallography and BiophysicsUniversity of Madras, Guindy Maraimalai Campus Chennai 600025 Tamil Nadu India
| | - Devadasan Velmurugan
- CAS in Crystallography and BiophysicsUniversity of Madras, Guindy Maraimalai Campus Chennai 600025 Tamil Nadu India
| | - Swaminathan Shanmugan
- Research Institute and Department of ChemistrySRM University Kattankulathur 603203 Tamil Nadu India
| | - Nallasamy Palanisami
- Department of Chemistry, School of Advanced SciencesVIT University Vellore 632014 Tamil Nadu India
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13
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Lerayer E, Renaut P, Brandès S, Cattey H, Fleurat-Lessard P, Bouhadir G, Bourissou D, Hierso JC. Planar-Chiral 1,1'-Diboryl Metallocenes: Diastereoselective Synthesis from Boryl Cyclopentadienides and Spin Density Analysis of a Diborylcobaltocene. Inorg Chem 2017; 56:1966-1973. [PMID: 28139922 DOI: 10.1021/acs.inorgchem.6b02510] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The reaction of nonsubstituted alkali metal cyclopentadienides with haloboranes leads to ∼90:10 mixtures of isomeric diene products that can be deprotonated to give simple boryl cyclopentadienides. We extended this transformation to the sterically hindered lithium tert-butylcyclopentadienide 1 using FBMes2 (Mes = 2,4,6-trimethylphenyl) and ClBCy2 as electrophiles. The boryl group is selectively introduced in the remote position to minimize steric congestion. The new boryl dienes are obtained as mixtures of isomers, and subsequent deprotonation with MeLi or LiHMDS affords the lithium 1,3-disubstituted cyclopentadienides 5a,b in yields over 95%. Direct assembling of tert-butylated boryl cyclopentadienides with MCl2 (M = Fe, Co) selectively leads to 1,1'-planar chiral ferrocenes 6a,b and cobaltocene 7. To shed light into the diastereoselective formation of 6a, DFT calculations were performed. The potential energy surface was scrutinized so as to identify and compare its diastereoisomers and conformers. This stereoselectivity is attributed to minimized steric repulsions between the tert-butyl and the BMes2 groups in the eclipsed conformation of the racemic diastereoisomers. The X-ray structures of boryl diene 2a and diboryl ferrocene 6a are reported. The electronic structure of cobaltocene 7 was analyzed by EPR and DFT calculations. The spin density of this unique open-shell complex is mainly localized on the Co center, but significant spin density is also found on the boron atoms, indicating substantial delocalization of the unpaired electron over the Lewis acid moieties. Consistently, the singly occupied molecular orbital is a combination of a Co-centered 3d orbital with π(BC) orbitals on each CpBMes2 rings. There is only weak, if any, direct M···B interaction in 6 and 7.
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Affiliation(s)
- Emmanuel Lerayer
- Université de Bourgogne Franche-Comté , Institut de Chimie Moléculaire de l'Université de Bourgogne (ICMUB UMR 6302 CNRS), 9 Avenue Alain Savary, 21078 Dijon, France
| | - Patrice Renaut
- Université de Bourgogne Franche-Comté , Institut de Chimie Moléculaire de l'Université de Bourgogne (ICMUB UMR 6302 CNRS), 9 Avenue Alain Savary, 21078 Dijon, France
| | - Stéphane Brandès
- Université de Bourgogne Franche-Comté , Institut de Chimie Moléculaire de l'Université de Bourgogne (ICMUB UMR 6302 CNRS), 9 Avenue Alain Savary, 21078 Dijon, France
| | - Hélène Cattey
- Université de Bourgogne Franche-Comté , Institut de Chimie Moléculaire de l'Université de Bourgogne (ICMUB UMR 6302 CNRS), 9 Avenue Alain Savary, 21078 Dijon, France
| | - Paul Fleurat-Lessard
- Université de Bourgogne Franche-Comté , Institut de Chimie Moléculaire de l'Université de Bourgogne (ICMUB UMR 6302 CNRS), 9 Avenue Alain Savary, 21078 Dijon, France
| | - Ghenwa Bouhadir
- Laboratoire Hétérochimie Fondamentale et Appliquée (LHFA), Université Paul Sabatier/CNRS UMR 5069 , 118 Route de Narbonne, 31062 Toulouse, Cedex 09, France
| | - Didier Bourissou
- Laboratoire Hétérochimie Fondamentale et Appliquée (LHFA), Université Paul Sabatier/CNRS UMR 5069 , 118 Route de Narbonne, 31062 Toulouse, Cedex 09, France
| | - Jean-Cyrille Hierso
- Université de Bourgogne Franche-Comté , Institut de Chimie Moléculaire de l'Université de Bourgogne (ICMUB UMR 6302 CNRS), 9 Avenue Alain Savary, 21078 Dijon, France.,Institut Universitaire de France (IUF) , 103 Boulevard Saint Michel, 75005 Paris Cedex, France
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Henriques MS, Gorbunov DI, Ponomaryov AN, Saneei A, Pourayoubi M, Dušek M, Zvyagin S, Uhlarz M, Wosnitza J. A monomeric copper-phosphoramide complex: Synthesis, structure, and electronic properties. Polyhedron 2016. [DOI: 10.1016/j.poly.2016.07.042] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Zhang Y, Shi J, Hu Y, Huang Z, Guo L. Co3(OH)2(HPO4)2 as a novel photocatalyst for O2 evolution under visible-light irradiation. Catal Sci Technol 2016. [DOI: 10.1039/c6cy01861k] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Co3(OH)2(HPO4)2 was proved to be a novel visible-light-driven photocatalyst for O2 evolution due to the unique characteristics of Co2+ octahedra.
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Affiliation(s)
- Yazhou Zhang
- International Research Center for Renewable Energy (IRCRE)
- State Key Laboratory of Multiphase Flow in Power Engineering (MFPE)
- Xi'an Jiaotong University (XJTU)
- Xi'an 710049
- China
| | - Jinwen Shi
- International Research Center for Renewable Energy (IRCRE)
- State Key Laboratory of Multiphase Flow in Power Engineering (MFPE)
- Xi'an Jiaotong University (XJTU)
- Xi'an 710049
- China
| | - Yuchao Hu
- International Research Center for Renewable Energy (IRCRE)
- State Key Laboratory of Multiphase Flow in Power Engineering (MFPE)
- Xi'an Jiaotong University (XJTU)
- Xi'an 710049
- China
| | - Zhenxiong Huang
- International Research Center for Renewable Energy (IRCRE)
- State Key Laboratory of Multiphase Flow in Power Engineering (MFPE)
- Xi'an Jiaotong University (XJTU)
- Xi'an 710049
- China
| | - Liejin Guo
- International Research Center for Renewable Energy (IRCRE)
- State Key Laboratory of Multiphase Flow in Power Engineering (MFPE)
- Xi'an Jiaotong University (XJTU)
- Xi'an 710049
- China
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