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Kumar R, Prakash V, Sankar M. Synthesis of Vanadyl Complexes of N-Confused Porphyrins and Their Bromoperoxidase-like Catalytic Activity. Inorg Chem 2024; 63:12506-12515. [PMID: 38912934 DOI: 10.1021/acs.inorgchem.4c01222] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/25/2024]
Abstract
Two new vanadyl complexes of N-confused porphyrins (NCPs), [VONCTPP] (V-1) and [VONCP(OMe)8] (V-2), have been synthesized for the first time and investigated as a catalyst for the oxidative bromination reaction of phenol and its derivatives. This article further delineates crystal structures, photophysical, and redox properties of both the vanadyl complexes. Complexes V-1 and V-2 exhibited a significant red shift in their absorption spectra compared with their respective free bases. The single-crystal structure of V-1 revealed that the complex is in the 2H tautomeric form, while EPR studies revealed the +4 oxidation state of vanadium metal having an axial compression with dxy1 configuration. Catalytic potential for bromoperoxidases-like activity has been explored for both complexes V-1 and V-2 for the first time in NCP chemistry with excellent TOF values (4.7-6.3 s-1 for V-1 and 7.3-8.7 s-1 for V-2) using KBr as a source of bromine and H2O2 as a green oxidant in aqueous acidic medium at 298 K. Notably, both catalysts show excellent recyclability over five cycles. The vanadyl-metalated NCPs exhibit excellent stability in the air.
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Affiliation(s)
- Rajesh Kumar
- Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee 247667, India
| | - Ved Prakash
- Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee 247667, India
| | - Muniappan Sankar
- Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee 247667, India
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2
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Canote CA, Kilyanek SM. Reactivity of metal dioxo complexes. Dalton Trans 2024; 53:4874-4889. [PMID: 38379444 DOI: 10.1039/d3dt04390h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/22/2024]
Abstract
Metal dioxo chemistry and its diverse reactivity are presented with an emphasis on the mechanisms of reactivity. Work from approximately the last decade is surveyed and organized by metal. In particular, the chemistry of cis-dioxo metal complexes is discussed at length. Reactions are grouped by generic type, including addition across a metal oxo bond, oxygen atom transfer, and radical atom transfer reactions. Attention is given to advances in deoxygenation chemistry, oxidation chemistry, and reductive transformations.
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Affiliation(s)
- Cody A Canote
- Department of Chemistry and Biochemistry, 1 University of Arkansas, Fayetteville, AR 72701, USA.
| | - Stefan M Kilyanek
- Department of Chemistry and Biochemistry, 1 University of Arkansas, Fayetteville, AR 72701, USA.
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3
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Ribeiro N, Farinha PF, Pinho JO, Luiz H, Mészáros JP, Galvão AM, Costa Pessoa J, Enyedy ÉA, Reis CP, Correia I, Gaspar MM. Metal Coordination and Biological Screening of a Schiff Base Derived from 8-Hydroxyquinoline and Benzothiazole. Pharmaceutics 2022; 14:pharmaceutics14122583. [PMID: 36559078 PMCID: PMC9785144 DOI: 10.3390/pharmaceutics14122583] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2022] [Revised: 11/20/2022] [Accepted: 11/22/2022] [Indexed: 11/25/2022] Open
Abstract
Designing new metallodrugs for anticancer therapy is a driving force in the scientific community. Aiming to contribute to this field, we hereby report the development of a Schiff base (H2L) derived from the condensation of 2-carbaldehyde-8-hydroxyquinoline with 2-hydrazinobenzothiazole and its complexation with transition metal ions. All compounds were characterised by analytical and spectroscopic techniques, which disclosed their structure: [Cu(HL)Cl], [Cu(HL)2], [Ni(HL)(acetate)], [Ni(HL)2], [Ru(HL)Cl(DMSO)], [VO(HL)2] and [Fe(HL)2Cl(H2O)]. Different binding modes were proposed, showing the ligand’s coordination versatility. The ligand proton dissociation constants were determined, and the tested compounds showed high lipophilicity and light sensitivity. The stability of all complexes in aqueous media and their ability to bind to albumin were screened. Based on an antiproliferative in vitro screening, [Ni(HL)(acetate)] and [Ru(HL)Cl(DMSO)] were selected for further studies aiming to investigate their mechanisms of action and therapeutic potential towards colon cancer. The complexes displayed IC50 < 21 μM towards murine (CT-26) and human (HCT-116) colon cancer cell lines. Importantly, both complexes exhibited superior antiproliferative properties compared to the clinically approved 5-fluorouracil. [Ni(HL)(acetate)] induced cell cycle arrest in S phase in CT-26 cells. For [Ru(HL)Cl(DMSO)] this effect was observed in both colon cancer cell lines. Additionally, both compounds significantly inhibited cell migration particularly in the human colon cancer cell line, HCT-116. Overall, the therapeutic potential of both metal complexes was demonstrated.
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Affiliation(s)
- Nádia Ribeiro
- Centro de Química Estrutural, Institute of Molecular Sciences and Departamento de Engenharia Química, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1, 1049-001 Lisboa, Portugal
| | - Pedro F. Farinha
- Research Institute for Medicines, iMed.ULisboa, Faculty of Pharmacy, Universidade de Lisboa, 1649-003 Lisboa, Portugal
| | - Jacinta O. Pinho
- Research Institute for Medicines, iMed.ULisboa, Faculty of Pharmacy, Universidade de Lisboa, 1649-003 Lisboa, Portugal
| | - Hugo Luiz
- Research Institute for Medicines, iMed.ULisboa, Faculty of Pharmacy, Universidade de Lisboa, 1649-003 Lisboa, Portugal
| | - János P. Mészáros
- MTA-SZTE Lendület Functional Metal Complexes Research Group, Department of Inorganic and Analytical Chemistry, University of Szeged, Dóm tér 7, H-6720 Szeged, Hungary
| | - Adelino M. Galvão
- Centro de Química Estrutural, Institute of Molecular Sciences and Departamento de Engenharia Química, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1, 1049-001 Lisboa, Portugal
| | - João Costa Pessoa
- Centro de Química Estrutural, Institute of Molecular Sciences and Departamento de Engenharia Química, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1, 1049-001 Lisboa, Portugal
| | - Éva A. Enyedy
- MTA-SZTE Lendület Functional Metal Complexes Research Group, Department of Inorganic and Analytical Chemistry, University of Szeged, Dóm tér 7, H-6720 Szeged, Hungary
| | - Catarina Pinto Reis
- Research Institute for Medicines, iMed.ULisboa, Faculty of Pharmacy, Universidade de Lisboa, 1649-003 Lisboa, Portugal
| | - Isabel Correia
- Centro de Química Estrutural, Institute of Molecular Sciences and Departamento de Engenharia Química, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1, 1049-001 Lisboa, Portugal
- Correspondence: (I.C.); (M.M.G.)
| | - Maria Manuela Gaspar
- Research Institute for Medicines, iMed.ULisboa, Faculty of Pharmacy, Universidade de Lisboa, 1649-003 Lisboa, Portugal
- Correspondence: (I.C.); (M.M.G.)
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Maurya MR, Chauhan A, Avecilla F. Synthesis, Characterization and Biomimetic Activity of Heterogenized Dioxidomolybdenum(VI) and Analogous Homogeneous Complexes. ChemistrySelect 2022. [DOI: 10.1002/slct.202202327] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Mannar R. Maurya
- Department of Chemistry Indian Institute of Technology Roorkee Roorkee 247667 India
| | - Abhilasha Chauhan
- Department of Chemistry Indian Institute of Technology Roorkee Roorkee 247667 India
| | - Fernando Avecilla
- Grupo NanoToxGen Centro de Investigacións Científicas Avanzadas (CICA) Departamento de Química, Facultade de Ciencias Universidade da Coruña Campus de A Coruña 15071 A Coruña Spain
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Alajrawy OI, Tuleab SF, Alshammary ET. Vanadium(IV) and Vanadium(V) Complexes: Syntheses, Structural Characterization, DFT Studies and Impact of Oral Uptake on Enhancing Insulin Activity of Diabetic Albino Rats. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.133821] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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Borah R, Lahkar S, Deori N, Brahma S. Synthesis, characterization and application of oxovanadium( iv) complexes with [NNO] donor ligands: X-ray structures of their corresponding dioxovanadium( v) complexes. RSC Adv 2022; 12:13740-13748. [PMID: 35541435 PMCID: PMC9076100 DOI: 10.1039/d2ra01448c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Accepted: 04/13/2022] [Indexed: 11/21/2022] Open
Abstract
Two oxovanadium(iv) complexes ligated by [NNO] donor ligands have been synthesized and characterized by ESI-HRMS, elemental (CHN) analysis and spectroscopic (UV-Vis, IR and EPR) techniques. Block shaped brown crystals from the methanolic solutions of these oxovanadium(iv) complexes were obtained during the crystallization process. Crystallographic structures of the resulting crystals revealed that the original oxovanadium(iv) complexes have been transformed into new dioxovanadium(v) complexes with concomitant oxidation of VIV to VV. The original oxovanadium(iv) complexes have been identified to be an efficient catalyst for the CO2 cycloaddition reaction with epoxides resulting up to 100% cyclic carbonate products. The geometries of oxovanadium(iv) complexes are optimized by the density functional theory (DFT) calculations at the uB3LYP/6-31G**/LANL2DZ level of theory. The geometry and structural parameters of optimized structures of oxovanadium(iv) complexes are in excellent agreement with the parameters of X-ray structures of their dioxovanadium(v) counterparts. Further, TD-DFT and Spin Density Plots for the oxovanadium(iv) complexes are performed in order to get more insights about their electronic absorption and EPR spectroscopies, respectively. Oxovanadium(iv) complexes catalysed CO2 cycloaddition resulting up to 100% conversion of epoxides to cyclic carbonates under relatively benign condition. Transformation of oxovanadium(iv) to dioxovanadium(v) in the process of crystallization.![]()
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Affiliation(s)
- Rakhimoni Borah
- Department of Chemistry, Gauhati University, Guwahati 781014, Assam, India
| | - Surabhi Lahkar
- Department of Chemistry, Gauhati University, Guwahati 781014, Assam, India
| | - Naranarayan Deori
- Department of Chemistry, Gauhati University, Guwahati 781014, Assam, India
| | - Sanfaori Brahma
- Department of Chemistry, Gauhati University, Guwahati 781014, Assam, India
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Maurya MR, Prakash V, Avecilla F, Sankar M. Selective Bromination of
β
‐Positions of Porphyrin by Self‐Catalytic Behaviour of VOTPP: Facile Synthesis, Electrochemical Redox Properties and Catalytic Application. Eur J Inorg Chem 2021. [DOI: 10.1002/ejic.202100116] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Mannar R. Maurya
- Department of Chemistry Indian Institute of Technology Roorkee Roorkee 247667 India
| | - Ved Prakash
- Department of Chemistry Indian Institute of Technology Roorkee Roorkee 247667 India
| | - Fernando Avecilla
- Grupo Xenomar, Centro de Investigacións Científicas Avanzadas (CICA), Departamento de Química, Facultade de Ciencias Universidade da Coruña Campus de A Coruña 15071 A Coruña Spain
| | - Muniappan Sankar
- Department of Chemistry Indian Institute of Technology Roorkee Roorkee 247667 India
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8
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Topić E, Landripet I, Duguin M, Pisk J, Đilović I, Vrdoljak V, Rubčić M. Coordinating and supramolecular prospects of unsymmetrically substituted carbohydrazides. NEW J CHEM 2020. [DOI: 10.1039/d0nj03106b] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Unsymmetrically substituted carbohydrazides serve as multifunctional ligands, practicing their chelating and supramolecular roles with cis-dioxomolybdenum(vi) cationic core and the Lindqvist anion.
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Affiliation(s)
- Edi Topić
- University of Zagreb
- Faculty of Science
- Department of Chemistry
- 10000 Zagreb
- Croatia
| | - Ivana Landripet
- Ruđer Bošković Institute
- Division of Materials Chemistry
- 10000 Zagreb
- Croatia
| | - Maëlle Duguin
- INP-ENSIACET
- 31030 Toulouse
- France
- Sleever Technologies
- ZA Gabor
| | - Jana Pisk
- University of Zagreb
- Faculty of Science
- Department of Chemistry
- 10000 Zagreb
- Croatia
| | - Ivica Đilović
- University of Zagreb
- Faculty of Science
- Department of Chemistry
- 10000 Zagreb
- Croatia
| | - Višnja Vrdoljak
- University of Zagreb
- Faculty of Science
- Department of Chemistry
- 10000 Zagreb
- Croatia
| | - Mirta Rubčić
- University of Zagreb
- Faculty of Science
- Department of Chemistry
- 10000 Zagreb
- Croatia
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