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Singh VK, Pillai V, Patel SK, Buch L. Improving Cytotoxicity by Changing a Linker from Diphenylether to Diphenylmethane and now to Phenylene in Binuclear Dithiocarbamate Complexes: Synthesis and Cytotoxicity Study. ChemistrySelect 2019. [DOI: 10.1002/slct.201900938] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- Vinay K Singh
- Department of ChemistryFaculty of ScienceThe M. S. University of Baroda Vadodara- 390 002 India
| | - Vineeta Pillai
- Department of ChemistryFaculty of ScienceThe M. S. University of Baroda Vadodara- 390 002 India
| | - Shailykumari K. Patel
- Department of ChemistryFaculty of ScienceThe M. S. University of Baroda Vadodara- 390 002 India
| | - Lipi Buch
- Department of ZoologyFaculty of ScienceThe M. S. University of Baroda Vadodara- 390 002 India
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Singh VK, Kadu R, Roy H, Raghavaiah P, Mobin SM. Phenolate based metallomacrocyclic xanthate complexes of Co(II)/Cu(II) and their exclusive deployment in [2 : 2] binuclear N,O-Schiff base macrocycle formation and in vitro anticancer studies. Dalton Trans 2016; 45:1443-54. [PMID: 26674056 DOI: 10.1039/c5dt03407h] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Potassium salts of phenolate based polydentate xanthate ligands 4,4'-bis(2-dithiocarbonatobenzylideneamino)diphenyl ether () and 4,4'-bis(2-dithiocarbonatonaphthylmethylideneamino)diphenyl ether () have been synthesized and characterized, prior to use. The reaction of or with M(OAc)2 in Et3N affords access to a rare series of binuclear metallomacrocyclic xanthate complexes of the type [M2-μ(2)-bis-(κ(2)S,S-xan(1)/xan(2))] () which quickly forms [2 : 2] binuclear N,O-bidentate Schiff base macrocyclic complexes of the type [M2-μ(2)-bis-(κ(2)N,O-L(1)/L(2))] ( = 4,4'-bis(2-hydroxybenzylideneamino)diphenyl ether, = 4,4'-bis(2-hydroxynaphthylmethylidene-amino)diphenyl ether) via evolution of CS2 in solution. The compounds were characterized by microanalysis, relevant spectroscopy (FT-IR, UV-visible), mass spectrometry (ESI-MS), and powder and single crystal XRD techniques. In vitro anticancer activity of all the compounds was evaluated against HEP 3B (hepatoma) and IMR 32 (neuroblastoma) by the MTT assay. Remarkably, the binuclear copper(ii) xanthate complexes were found to be extremely active against both the cell lines (IC50: 8.1 ± 0.8 μM (), 8.8 ± 1.7 μM () against HEP 3B and 1.9 ± 0.3 μM () and 7.3 ± 0.6 μM () against IMR 32) and this projects them as good candidates for potent antitumor agents and the IC50 values confirm their better potency than the reference drug cisplatin. The flow-cytometric density plot illustrates the induction of apoptosis in HEP 3B and IMR 32 cells after treatment with , , , and .
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Affiliation(s)
- Vinay K Singh
- Department of Chemistry, Faculty of Science, The M. S. University of Baroda, Vadodara-390 002, India.
| | - Rahul Kadu
- Department of Chemistry, Faculty of Science, The M. S. University of Baroda, Vadodara-390 002, India.
| | - Hetal Roy
- Department of Zoology, Faculty of Science, The M. S. University of Baroda, Vadodara-390 002, India
| | | | - Shaikh M Mobin
- Department of Chemistry, Indian Institute of Technology Indore-452 017, India
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Target-selective delivery and activation of platinum-based anticancer agents. Future Med Chem 2015; 7:911-27. [DOI: 10.4155/fmc.15.37] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
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Brown RS. Metal Ion-Promoted Leaving Group Assistance in the Light Alcohols. ADVANCES IN PHYSICAL ORGANIC CHEMISTRY 2015. [DOI: 10.1016/bs.apoc.2015.07.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Gupta RK, Sharma G, Pandey R, Kumar A, Koch B, Li PZ, Xu Q, Pandey DS. DNA/Protein Binding, Molecular Docking, and in Vitro Anticancer Activity of Some Thioether-Dipyrrinato Complexes. Inorg Chem 2013; 52:13984-96. [DOI: 10.1021/ic401662d] [Citation(s) in RCA: 124] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
| | | | | | | | | | - Pei-Zhou Li
- National Institute of Advanced Industrial Science and Technology (AIST), 1-8-31, Midorigaoka, Ikeda, Osaka 563-8577, Japan
| | - Qiang Xu
- National Institute of Advanced Industrial Science and Technology (AIST), 1-8-31, Midorigaoka, Ikeda, Osaka 563-8577, Japan
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Suh J. Progress in Designing Artificial Proteases: A New Therapeutic Option for Amyloid Diseases. ASIAN J ORG CHEM 2013. [DOI: 10.1002/ajoc.201300135] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Prakash J, Kodanko JJ. Metal-based methods for protein inactivation. Curr Opin Chem Biol 2013; 17:197-203. [DOI: 10.1016/j.cbpa.2012.12.011] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2012] [Revised: 11/29/2012] [Accepted: 12/07/2012] [Indexed: 01/16/2023]
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Raycroft MAR, Maxwell CI, Oldham RAA, Andrea AS, Neverov AA, Brown RS. Trifunctional metal ion-catalyzed solvolysis: Cu(II)-promoted methanolysis of N,N-bis(2-picolyl) benzamides involves unusual Lewis acid activation of substrate, delivery of coordinated nucleophile, powerful assistance of the leaving group departure. Inorg Chem 2012; 51:10325-33. [PMID: 22971051 DOI: 10.1021/ic301454y] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The methanolyses of Cu(II) complexes of a series of N,N-bis(2-picolyl) benzamides (4a-g) bearing substituents X on the aromatic ring were studied under (s)(s)pH-controlled conditions at 25 °C. The active form of the complexes at neutral (s)(s)pH has a stoichiometry of 4:Cu(II):((-)OCH(3))(HOCH(3)) and decomposes unimolecularly with a rate constant k(x). A Hammett plot of log(k(x)) vs σ(x) values has a ρ(x) of 0.80 ± 0.05. Solvent deuterium kinetic isotope effects of 1.12 and 1.20 were determined for decomposition of the 4-nitro and 4-methoxy derivatives, 4b:Cu(II):((-)OCH(3))(HOCH(3)) and 4g:Cu(II):((-)OCH(3))(HOCH(3)), in the plateau region of the (s)(s)pH/log(k(x)) profiles in both CH(3)OH and CH(3)OD. Activation parameters for decomposition of these complexes are ΔH(++) = 19.1 and 21.3 kcal mol(-1) respectively and ΔS(++) = -5.1 and -2 cal K(-1) mol(-1). Density functional theory (DFT) calculations for the reactions of the Cu(II):((-)OCH(3))(HOCH(3)) complexes of 4a,b and g (4a, X = 3,5-dinitro) were conducted to probe the relative transition state energies and geometries of the different states. The experimental and computational data support a mechanism where the metal ion is coordinated to the N,N-bis(2-picolyl) amide unit and positioned so that it permits delivery of a coordinated Cu(II):((-)OCH(3)) nucleophile to the C═O in the rate-limiting transition state (TS) of the reaction. This proceeds to a tetrahedral intermediate INT, occupying a shallow minimum on the free energy surface with the Cu(II) coordinated to both the methoxide and the amidic N. Breakdown of INT is a virtually barrierless process, involving a Cu(II)-assisted departure of the bis(2-picolyl)amide anion. The analysis of the data points to a trifunctional role for the metal ion in the solvolysis mechanism where it activates intramolecular nucleophilic attack on the C═O group by coordination to an amidic N in the first step of the reaction and subsequently assists leaving group departure in the second step. The catalysis is very large; compared with the second order rate constant for methoxide attack on 4b, the computed reaction of CH3O(-) and 4b:Cu(II):(HOCH(3))(2) is accelerated by roughly 2.0 × 10(16) times.
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Affiliation(s)
- Mark A R Raycroft
- Department of Chemistry, Queen's University, Kingston, Ontario, Canada K7L 3N6
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Prakash J, Kodanko JJ. Selective Inactivation of Serine Proteases by Nonheme Iron Complexes. Inorg Chem 2011; 50:3934-45. [DOI: 10.1021/ic102320j] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Jai Prakash
- Department of Chemistry, Wayne State University, 5101 Cass Avenue, Detroit, Michigan 48202, United States
| | - Jeremy J. Kodanko
- Department of Chemistry, Wayne State University, 5101 Cass Avenue, Detroit, Michigan 48202, United States
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Quantum chemical calculations of stability constants: study of ligand effects on the relative stability of Pd(II)–peptide complexes. Theor Chem Acc 2010. [DOI: 10.1007/s00214-010-0862-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Hong J, Jiao Y, He W, Guo Z, Yu Z, Zhang J, Zhu L. His-Oriented Peptide Hydrolysis Promoted by cis-[Pt(en)(H2O)2]2+: a New Specific Peptide Cleavage Site. Inorg Chem 2010; 49:8148-54. [DOI: 10.1021/ic101191m] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jin Hong
- State Key Laboratory of Coordination Chemistry, Coordination Chemistry Institute, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, P.R. China
- Basic Science College, China Pharmaceutical University, Nanjing 211198, P.R. China
| | - Yang Jiao
- State Key Laboratory of Coordination Chemistry, Coordination Chemistry Institute, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, P.R. China
| | - Weijiang He
- State Key Laboratory of Coordination Chemistry, Coordination Chemistry Institute, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, P.R. China
| | - Zijian Guo
- State Key Laboratory of Coordination Chemistry, Coordination Chemistry Institute, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, P.R. China
| | - Zhen Yu
- State Key Laboratory of Coordination Chemistry, Coordination Chemistry Institute, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, P.R. China
| | - Junfeng Zhang
- Department of Biochemistry, State Key Laboratory of Pharmaceutical Biotechnology, Nanjing University, Nanjing 210093, P.R. China
| | - Longgen Zhu
- State Key Laboratory of Coordination Chemistry, Coordination Chemistry Institute, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, P.R. China
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Yeguas V, Campomanes P, López R, Díaz N, Suárez D. Understanding Regioselective Cleavage in Peptide Hydrolysis by a Palladium(II) Aqua Complex: A Theoretical Point of View. J Phys Chem B 2010; 114:8525-35. [DOI: 10.1021/jp101870j] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Violeta Yeguas
- Departamento de Química Física y Analítica, Universidad de Oviedo, C/Julián Clavería, 8, 33006 Oviedo, Spain, and Laboratory of Computational Chemistry and Biochemistry, École Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland
| | - Pablo Campomanes
- Departamento de Química Física y Analítica, Universidad de Oviedo, C/Julián Clavería, 8, 33006 Oviedo, Spain, and Laboratory of Computational Chemistry and Biochemistry, École Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland
| | - Ramón López
- Departamento de Química Física y Analítica, Universidad de Oviedo, C/Julián Clavería, 8, 33006 Oviedo, Spain, and Laboratory of Computational Chemistry and Biochemistry, École Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland
| | - Natalia Díaz
- Departamento de Química Física y Analítica, Universidad de Oviedo, C/Julián Clavería, 8, 33006 Oviedo, Spain, and Laboratory of Computational Chemistry and Biochemistry, École Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland
| | - Dimas Suárez
- Departamento de Química Física y Analítica, Universidad de Oviedo, C/Julián Clavería, 8, 33006 Oviedo, Spain, and Laboratory of Computational Chemistry and Biochemistry, École Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland
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Schreiner B, Beck W. Coordination of the Ester Group - Hydrido-Rhodium(III) and Iridium(III) Complexes of Orthometallated Diphenylmethylene Glycine Esters [1]. Z Anorg Allg Chem 2010. [DOI: 10.1002/zaac.200900474] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Roy M, Bhowmick T, Santhanagopal R, Ramakumar S, Chakravarty AR. Photo-induced double-strand DNA and site-specific protein cleavage activity of l-histidine (μ-oxo)diiron(iii) complexes of heterocyclic bases. Dalton Trans 2009:4671-82. [DOI: 10.1039/b901337g] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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McAlister GC, Kiessel SE, Coon JJ. In vacuo formation of peptide-metal coordination complexes. INTERNATIONAL JOURNAL OF MASS SPECTROMETRY 2008; 276:149-152. [PMID: 19424441 PMCID: PMC2677728 DOI: 10.1016/j.ijms.2008.05.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Here we report on the reaction of rhenate anions (ReO(3) (-)) with multiply protonated peptide cations in a quadrupole linear ion trap mass spectrometer. These reactions effect the formation of an anion-cation complex that, upon collisional activation, dissociates along the peptide backbone rather than by displacement of the anion. Cleavage of the peptide backbone, with anion retention, leads us to conclude the anion-cationcomplexmust be tightly bound, most probably through coordination chemistry. We describe this chemistry and detail the possible application of such ion attachment reactions to the characterization of intact proteins.
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Affiliation(s)
- Graeme C. McAlister
- Department of Chemistry, University of Wisconsin, Madison, WI 53706, United States
| | - Sharon E.B. Kiessel
- Department of Chemistry, University of Wisconsin, Madison, WI 53706, United States
| | - Joshua J. Coon
- Department of Chemistry, University of Wisconsin, Madison, WI 53706, United States
- Department of Biomolecular Chemistry, University of Wisconsin, Madison, WI 53706, United States
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Hong J, Miao R, Zhao C, Jiang J, Tang H, Guo Z, Zhu L. Mass spectrometry assisted assignments of binding and cleavage sites of copper(II) and platinum(II) complexes towards oxidized insulin B chain. JOURNAL OF MASS SPECTROMETRY : JMS 2006; 41:1061-72. [PMID: 16888713 DOI: 10.1002/jms.1065] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
Interaction of cis-[Pt(en)(H2O)2]2+ and [CuL(H2O)]2+, where L is 2-[bis(2-aminoethyl)amino]ethanol, with oxidized insulin B chain in molar ratio of 1 : 1, 1 : 2 and 1 : 3 at pH 2.5 and 40 degrees C has been investigated by electrospray ionization mass spectrometry (ESI-MS) and tandem mass spectrometry (MS/MS). The results show that the binding sites of the two complexes with oxidized insulin B chain are terminal NH2, imidazole groups of His5 and His10. The hydrolytic cleavage studies show that the [CuL(H2O)]2+, upon a pendant hydroxyl group of the ligand, selectively cleaves the peptide bonds at Gly8-Ser9, Asn3-Gln4 and Phe1-Val2, and the cis-[Pt(en)(H2O)2]2+ only cleaves the peptide bond at His10-Leu11. This is the first report of cis-[Pt(en)(H2O)2]2+-promoted cleavage of His-X peptide bond.
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Affiliation(s)
- Jin Hong
- State Key Laboratory of Coordination Chemistry, Coordination Chemistry Institute, Nanjing University, Nanjing 210093, P R China
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