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Arulmozhi S, Sasikumar G, Subramani A, Mohammed MKA, Ali SJA, Ponnusamy S, Jabir MS, Elgorban AM, Zhang W, Natarajan H. Chemical, Pharmacological, and Theoretical Aspects of Some Transition Metal(II) Complexes Derived from Pyrrole Azine Schiff Base. ACS OMEGA 2023; 8:34458-34470. [PMID: 37779929 PMCID: PMC10536097 DOI: 10.1021/acsomega.3c02860] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/26/2023] [Accepted: 08/10/2023] [Indexed: 10/03/2023]
Abstract
Some new transition metal complexes were prepared by reacting metal(II) salts with Schiff base azines, which were prepared via condensation of 5-(diethylamino) salicylaldehyde and hydrazine with pyrrole-2-carbaldehyde. Their structures were confirmed based on CHN, UV-visible, FT-IR, and EPR measurements. The complexes were also assessed for their antibacterial, antioxidant, and anticancer properties. Some of these chemicals were said to be extraordinarily effective in this respect. The antibacterial activities of the complexes in vitro demonstrated their potential, although the [Cu(L)(bpy] complex was suggested to exhibit moderate activity against pathogens compared to all other in this series. The cytotoxic activity of the prepared analogues showed better cell viability compared with standard cisplatin. Moreover, there is a good agreement between the experimental and theoretical findings from docking and theoretical investigations done using DFT at the B3LYP level.
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Affiliation(s)
- Sivan Arulmozhi
- Post-Graduate
and Research Department of Chemistry, the
New College (Autonomous), Chennai 600014, India
| | | | - Annadurai Subramani
- Department
of Biochemistry, Dwaraka Doss Goverdhan
Doss Vaishnav College, Chennai 600106, Tamil Nadu, India
| | | | - Syed J. Askar Ali
- Post-Graduate
and Research Department of Chemistry, the
New College (Autonomous), Chennai 600014, India
| | - Sasikumar Ponnusamy
- Department
of Physics, Saveetha School of Engineering,
SIMATS, Chennai 602 701, India
| | - Majid S. Jabir
- Department
of Applied Sciences, University of Technology-Iraq, 10011 Baghdad, Iraq
| | - Abdallah M. Elgorban
- Department
of Botany and Microbiology, College of Science, King Saud University, P.O. 2455, Riyadh 11451, Saudi Arabia
| | - Wanli Zhang
- School
of Food Science and Engineering, Hainan
University, Haikou 570228, PR China
| | - Hema Natarajan
- Department
of Physics, Jerusalem College of Engineering, Narayanapuram, Pallikaranai, Chennai 600100, India
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Subhash, Chaudhary A, Mamta, Jyoti. Synthesis, structural characterization, thermal analysis, DFT, biocidal evaluation and molecular docking studies of amide-based Co(II) complexes. CHEMICKE ZVESTI 2023; 77:1-20. [PMID: 37362794 PMCID: PMC10154188 DOI: 10.1007/s11696-023-02843-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/20/2023] [Accepted: 04/21/2023] [Indexed: 06/28/2023]
Abstract
Abstract Many distinct amino acid and aromatic amine-derived transition metal complexes are used as physiologically active compounds. A few Cobalt (II) complexes have been synthesized by reacting cobalt (II) chloride with 1, 8-diaminonapthalene-based tetraamide macrocyclic ligands in an ethanolic media. These synthesized ligands (TAML1-3) and associated Co(II) complexes were fully characterized with various spectroscopic techniques, such as IR, NMR, CHN analysis, EPR, molar conductance, and magnetic susceptibility measurements, TGA, UV-visible spectra, powder X-ray diffraction and DFT analysis. The IR spectra reveal interactions between the core metal atom and ligands through N of 1, 8-diaminonapthalene. The distorted octahedral geometry of synthesized Co(II) macrocyclic complexes were confirmed by ESR, UV-Vis and DFT studies. The synthesized ligands (TAML1-TAML3) and their Co(II) complexes were tested for antimicrobial activity against A. niger, C. albicans, and F. oxysporum in addition to bacteria like S. aureus, B. subtilis, and Gram-negative bacteria like E. coli. The ligand TAML1 and complex [Co(TAML1)Cl2] showed an excellent antibacterial activity. The minimum inhibitory concentration of TAML1 and [Co(TAML1)Cl2] against S. aureus were found to be 7 mm and 10 mm zone of inhibition at 500 ppm, respectively, compared to drug ampicillin (3 mm). Additionally, each molecule exhibited notable antioxidant activity. The biological significance of the synthesized compounds was then evaluated by molecular docking experiments with the active site of the receptor protein such as Sars-Cov-2, C. Albicans, X. campestris and E. coli. The molecular docking assisted data strongly correlated to the experimental approach of antimicrobial activity. Graphical Abstract Supplementary Information The online version contains supplementary material available at 10.1007/s11696-023-02843-y.
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Affiliation(s)
- Subhash
- Department of Chemistry, Kurukshetra University, Kurukshetra, Haryana 136119 India
| | - Ashu Chaudhary
- Department of Chemistry, Kurukshetra University, Kurukshetra, Haryana 136119 India
| | - Mamta
- Department of Chemistry, Kurukshetra University, Kurukshetra, Haryana 136119 India
| | - Jyoti
- Department of Applied Science, UIET, Kurukshetra University, Kurukshetra, Haryana 136119 India
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Sasikumar G, Subramani A, Tamilarasan R, Rajesh P, Sasikumar P, Albukhaty S, Mohammed MKA, Karthikeyan S, Al-aqbi ZT, Al-Doghachi FAJ, Taufiq-Yap YH. Catalytic, Theoretical, and Biological Investigations of Ternary Metal (II) Complexes Derived from L-Valine-Based Schiff Bases and Heterocyclic Bases. Molecules 2023; 28:molecules28072931. [PMID: 37049692 PMCID: PMC10095770 DOI: 10.3390/molecules28072931] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2023] [Revised: 02/25/2023] [Accepted: 03/20/2023] [Indexed: 03/29/2023] Open
Abstract
A new series of ternary metal complexes, including Co(II), Ni(II), Cu(II), and Zn(II), were synthesized and characterized by elemental analysis and diverse spectroscopic methods. The complexes were synthesized from respective metal salts with Schiff’s-base-containing amino acids, salicylaldehyde derivatives, and heterocyclic bases. The amino acids containing Schiff bases showed promising pharmacological properties upon complexation. Based on satisfactory elemental analyses and various spectroscopic techniques, these complexes revealed a distorted, square pyramidal geometry around metal ions. The molecular structures of the complexes were optimized by DFT calculations. Quantum calculations were performed with the density functional method for which the LACVP++ basis set was used to find the optimized molecular structure of the complexes. The metal complexes were subjected to an electrochemical investigation to determine the redox behavior and oxidation state of the metal ions. Furthermore, all complexes were utilized for catalytic assets of a multi-component Mannich reaction for the preparation of -amino carbonyl derivatives. The synthesized complexes were tested to determine their antibacterial activity against E. coli, K. pneumoniae, and S. aureus bacteria. To evaluate the cytotoxic effects of the Cu(II) complexes, lung cancer (A549), cervical cancer (HeLa), and breast cancer (MCF-7) cells compared to normal cells, cell lines such as human dermal fibroblasts (HDF) were used. Further, the docking study parameters were supported, for which it was observed that the metal complexes could be effective in anticancer applications.
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Affiliation(s)
- Gopalakrishnan Sasikumar
- Department of Chemistry, St. Joseph’s College of Engineering, Chennai 600 119, Tamil Nadu, India
| | - Annadurai Subramani
- Department of biochemistry, Dwaraka Doss Goverdhan Doss Vaishnav College, Chennai 600 106, Tamil Nadu, India
| | - Ramalingam Tamilarasan
- Department of Chemistry, Vel Tech Multi Tech Dr. Rangarajan Dr. Sakunthala Engineering College, Chennai 600 062, Tamil Nadu, India
| | - Punniyamurthy Rajesh
- Department of Physics, Vels Institute of Science, Technology and Advance Studies of Basic Science, Chennai 600 017, Tamil Nadu, India
| | - Ponnusamy Sasikumar
- Department of Physics, Saveetha School of Engineering, SIMATS, Chennai 602 701, Tamil Nadu, India
- Correspondence: (P.S.); (Y.H.T.-Y.)
| | - Salim Albukhaty
- Department of Chemistry, College of Science, University of Misan, Maysan 62001, Misan, Iraq
| | - Mustafa K. A. Mohammed
- Radiological Techniques Department, Al-Mustaqbal University College, Hillah 51001, Babylon, Iraq
| | - Subramani Karthikeyan
- Department of Physics, Periyar University Centre for Post Graduate and Research Studies, Dharmapuri 636 701, Tamil Nadu, India
| | - Zaidon T. Al-aqbi
- College of Agriculture, University of Misan, Al-Amara, Amarah 62001, Misan, Iraq
| | - Faris A. J. Al-Doghachi
- Department of Chemistry, Faculty of Science, University of Basrah, Basra 61004, Basrah, Iraq
| | - Yun Hin Taufiq-Yap
- Catalysis Science and Technology Research Centre, Faculty of Science, Universiti Putra Malaysia, Serdang 43400, Selangor, Malaysia
- Faculty of Science and Natural Resources, University Malaysia Sabah, Kota Kinabalu 88400, Sabah, Malaysia
- Correspondence: (P.S.); (Y.H.T.-Y.)
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Archana B, Sreedaran S. Synthesis, Characterization, DNA Binding and Cleavage Studies, In-Vitro Antimicrobial, Cytotoxicity Assay of New Manganese(III) Complexes of N-Functionalized Macrocyclic Cyclam Based Schiff Base Ligands. Polyhedron 2022. [DOI: 10.1016/j.poly.2022.116269] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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New cyclam based Zn(II) complexes: effect of flexibility and para substitution on DNA binding, in vitro cytotoxic studies and antimicrobial activities. J CHEM SCI 2022. [DOI: 10.1007/s12039-022-02091-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Jayathuna MA, Ahmed S, Kim YG, Gajendiran M, Kim K, Rahiman AK. Ferrocenylimine-based homoleptic metal(II) complexes: Theoretical, biocompatibility, in vitro anti-proliferative, and in silico molecular docking and pharmacokinetics studies. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2021.131905] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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DNA interaction, anticancer, cytotoxicity and genotoxicity studies with potential pyrazine-bipyrazole dinuclear µ-oxo bridged Au(III) complexes. Mol Divers 2021; 26:2085-2101. [PMID: 34561737 DOI: 10.1007/s11030-021-10317-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2021] [Accepted: 09/06/2021] [Indexed: 10/20/2022]
Abstract
Pyrazine-bipyrazole-based µ-oxo bridged dinuclear Au(III) complexes were synthesized and characterized by various spectrometric (1H-NMR, 13C (APT) NMR, FT-IR, Mass spectrometry) and analytical techniques (elemental analysis and conductance measurement). The evaluation of DNA binding activity by UV-Vis absorption spectra and viscosity measurement demonstrated that all the compounds intercalate in between the stacks of DNA base pair and the binding constant values were observed in the range of 5.4 × 104-2.17 × 105 M-1. The molecular docking study also supports the intercalation mode of binding. The anti-proliferation activity of complexes on A549 (Lung adenocarcinoma) cells by MTT assay demonstrated IC50 values in the range of 47.46 -298.12 μg/mL. The genotoxicity of compounds was checked by smearing observed in the DNA of S. pombe cell under the influence of complexes. The in vivo cytotoxicity of compounds against brine shrimp demonstrated the LC50 values in the range of 4.59-27.22 μg/mL. The promising results of the Au(III) complexes received significant attention and make them suitable for the new metallodrugs after the detailed mechanistic biological study.
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Jayakumar S, Mahendiran D, Arumai Selvan D, Kalilur Rahiman A. Bis(imidazol-1-yl)methane-based heteroscorpionate metal(II) complexes: Theoretical, antimicrobial, antioxidant, in vitro cytotoxicity and c-Met tyrosine kinase studies. J Mol Struct 2019. [DOI: 10.1016/j.molstruc.2019.06.088] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Khan Haleel A, Mahendiran D, Rafi UM, Veena V, Shobana S, Rahiman AK. Tetrazolo[1,5-a]pyrimidine-based metal(II) complexes as therapeutic agents: DNA interaction, targeting topoisomerase I and cyclin-dependent kinase studies. INORG NANO-MET CHEM 2019. [DOI: 10.1080/24701556.2019.1571514] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Azees Khan Haleel
- Post-Graduate and Research Department of Chemistry, The New College (Autonomous), Chennai, India
| | - Dharmasivam Mahendiran
- Post-Graduate and Research Department of Chemistry, The New College (Autonomous), Chennai, India
- Molecular Pharmacology and Pathology Program, Department of Pathology, Bosch Institute, University of Sydney, NSW, Australia
| | - Ummer Muhammed Rafi
- Post-Graduate and Research Department of Chemistry, The New College (Autonomous), Chennai, India
| | | | - Sugumar Shobana
- Department of Genetic Engineering, School of Bioengineering, SRM Institute of Science and Technology, Kattankulathur, India
| | - Aziz Kalilur Rahiman
- Post-Graduate and Research Department of Chemistry, The New College (Autonomous), Chennai, India
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Qian J, Qiao WW, Tian JL. Synthesis and crystal structure of the first dinuclear zinc complex containing 1,4,7-triazacyclononane and biological properties of the protonated ligand. J COORD CHEM 2018. [DOI: 10.1080/00958972.2018.1530768] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- Jing Qian
- College of Chemistry, Tianjin Normal University, Tianjin, People’s Republic of China
| | - Wei-Wei Qiao
- College of Chemistry, Tianjin Normal University, Tianjin, People’s Republic of China
| | - Jin-Lei Tian
- Department of Chemistry, Nankai University, Tianjin, People’s Republic of China
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Rafi UM, Mahendiran D, Devi VG, Doble M, Rahiman AK. Pyridazine-based heteroleptic copper(II) complexes as potent anticancer drugs by inducing apoptosis and S-phase arrest in breast cancer cell. Inorganica Chim Acta 2018. [DOI: 10.1016/j.ica.2018.06.007] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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12
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Mancha Madha K, Gurumoorthy P, Arul Antony S, Ramalakshmi N. Synthesis of mononuclear copper(II) complexes of N 3 O 2 and N 4 O 2 donors containing Schiff base ligands: Theoretical and biological observations. J Mol Struct 2017. [DOI: 10.1016/j.molstruc.2017.04.115] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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13
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El-Naggar AM, Abou-El-Regal MM, El-Metwally SA, Sherbiny FF, Eissa IH. Synthesis, characterization and molecular docking studies of thiouracil derivatives as potent thymidylate synthase inhibitors and potential anticancer agents. Mol Divers 2017; 21:967-983. [DOI: 10.1007/s11030-017-9776-1] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2017] [Accepted: 08/02/2017] [Indexed: 11/27/2022]
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Jayakumar S, Mahendiran D, Rehana D, Kalilur Rahiman A. Heteroleptic metal(II) complexes of hydrotris(methimazolyl)borate and diimines: Synthesis, theoretical calculations, antimicrobial, antioxidant, in vitro cytotoxicity and molecular docking studies. Microb Pathog 2017; 109:120-130. [PMID: 28546116 DOI: 10.1016/j.micpath.2017.05.024] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2016] [Revised: 01/21/2017] [Accepted: 05/19/2017] [Indexed: 11/18/2022]
Abstract
A series of heteroleptic metal(II) complexes of formulation [M(Tm)(diimine)](ClO4) (1-8), [Tm = hydrotris(methimazolyl)borate, diimine = 2,2'-bipyridyl or 1,10-phenanthroline and M = Mn(II), Ni(II), Cu(II) or Zn(II)] have been synthesized and characterized by spectroscopic methods. The geometric parameters of the complexes were determined using UV-Vis spectroscopy and DFT calculations. The analyses of HOMO and LUMO have been used to explain the charge transfer within the molecule. Antimicrobial activity of the synthesized heteroleptic complexes were evaluated against two Gram (-ve) (Escherichia coli and Klebsiella pneumoniae) and two Gram (+ve) (Bacillus cereus and Staphylococcus aureus) bacterial, and three fungal (Candida albicans, Candida glabrata and Candida krusei) strains with respect to the standard drugs erythromycin and amphotericin-B. The copper(II) complex 6 showed better scavenging activity against DPPH when compared to other complexes. The cytotoxic activity of copper(II) complexes 5 and 6 against MCF-7 cell line was assessed by MTT assay, which showed exponential responses toward increasing concentration of complexes. In the molecular docking studies, the complexes showed π-π, σ-π, hydrogen bonding, van der Waals and electrostatic interactions with FGFR kinase receptor.
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Affiliation(s)
- S Jayakumar
- Post-Graduate and Research Department of Chemistry, The New College (Autonomous), Chennai 600 014, India; Department of Chemistry, Misrimal Navajee Munoth Jain Engineering College, Thoraipakkam, Chennai 600 097, India
| | - D Mahendiran
- Post-Graduate and Research Department of Chemistry, The New College (Autonomous), Chennai 600 014, India
| | - Dilaveez Rehana
- Post-Graduate and Research Department of Chemistry, The New College (Autonomous), Chennai 600 014, India; Department of Chemistry, Justice Basheer Ahmed Sayeed College for Women (Autonomous), Chennai 600 018, India
| | - A Kalilur Rahiman
- Post-Graduate and Research Department of Chemistry, The New College (Autonomous), Chennai 600 014, India.
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Kumari S, Mahato AK, Maurya A, Singh VK, Kesharwani N, Kachhap P, Koshevoy IO, Haldar C. Syntheses and characterization of monobasic tridentate Cu(ii) Schiff-base complexes for efficient oxidation of 3,5-di-tert-butylcatechol and oxidative bromination of organic substrates. NEW J CHEM 2017. [DOI: 10.1039/c7nj00957g] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Enhanced bifunctional catalytic activities are shown by monobasic tridentate Cu(ii) Schiff-base complexes.
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Affiliation(s)
- Sweta Kumari
- Department of Applied Chemistry
- Indian Institute of Technology (Indian School of Mines)
- Dhanbad 826004
- India
| | - Arun Kumar Mahato
- Department of Applied Chemistry
- Indian Institute of Technology (Indian School of Mines)
- Dhanbad 826004
- India
| | - Abhishek Maurya
- Department of Applied Chemistry
- Indian Institute of Technology (Indian School of Mines)
- Dhanbad 826004
- India
| | - Vijay Kumar Singh
- Department of Applied Chemistry
- Indian Institute of Technology (Indian School of Mines)
- Dhanbad 826004
- India
| | - Neha Kesharwani
- Department of Applied Chemistry
- Indian Institute of Technology (Indian School of Mines)
- Dhanbad 826004
- India
| | - Payal Kachhap
- Department of Applied Chemistry
- Indian Institute of Technology (Indian School of Mines)
- Dhanbad 826004
- India
| | - Igor O. Koshevoy
- Department of Chemistry
- University of Eastern Finland
- Joensuu
- Finland
| | - Chanchal Haldar
- Department of Applied Chemistry
- Indian Institute of Technology (Indian School of Mines)
- Dhanbad 826004
- India
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Synthesis, crystal structures and biological evaluation of three ternary copper(II) complexes with fluorinated anthranilic acid derivatives. TRANSIT METAL CHEM 2016. [DOI: 10.1007/s11243-016-0092-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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17
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Current and future potential of metallo drugs: Revisiting DNA-binding of metal containing molecules and their diverse mechanism of action. Inorganica Chim Acta 2016. [DOI: 10.1016/j.ica.2016.01.006] [Citation(s) in RCA: 67] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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Gurumoorthy P, Mahendiran D, Kalilur Rahiman A. Theoretical calculations, DNA interaction, topoisomerase I and phosphatidylinositol-3-kinase studies of water soluble mixed-ligand nickel(II) complexes. Chem Biol Interact 2016; 248:21-35. [DOI: 10.1016/j.cbi.2016.02.002] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2015] [Revised: 01/14/2016] [Accepted: 02/07/2016] [Indexed: 10/22/2022]
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Jayakumar S, Mahendiran D, Srinivasan T, Mohanraj G, Kalilur Rahiman A. Theoretical investigation, biological evaluation and VEGFR2 kinase studies of metal(II) complexes derived from hydrotris(methimazolyl)borate. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2015; 155:66-77. [PMID: 26735002 DOI: 10.1016/j.jphotobiol.2015.11.013] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/22/2015] [Accepted: 11/23/2015] [Indexed: 11/16/2022]
Abstract
The reaction of soft tripodal scorpionate ligand, sodium hydrotris(methimazolyl)borate with M(ClO4)2·6H2O [MMn(II), Ni(II), Cu(II) or Zn(II)] in methanol leads to the cleavage of B-N bond followed by the formation of complexes of the type [M(MeimzH)4](ClO4)2·H2O (1-4), where MeimzH=methimazole. All the complexes were fully characterized by spectro-analytical techniques. The molecular structure of the zinc(II) complex (4) was determined by X-ray crystallography, which supports the observed deboronation reaction in the scorpionate ligand with tetrahedral geometry around zinc(II) ion. The electronic spectra of complexes suggested tetrahedral geometry for manganese(II) and nickel(II) complexes, and square-planar geometry for copper(II) complex. Frontier molecular orbital analysis (HOMO-LUMO) was carried out by B3LYP/6-31G(d) to understand the charge transfer occurring in the molecules. All the complexes exhibit significant antimicrobial activity against Gram (-ve) and Gram (+ve) bacterial as well as fungal strains, which are quite comparable to standard drugs streptomycin and clotrimazole. The copper(II) complex (3) showed excellent free radical scavenging activity against DPPH in all concentration with IC50 value of 30μg/mL, when compared to the other complexes. In the molecular docking studies, all the complexes showed hydrophobic, π-π and hydrogen bonding interactions with BSA. The cytotoxic activity of the complexes against human hepatocellular liver carcinoma (HepG2) cells was assessed by MTT assay, which showed exponential responses toward increasing concentration of complexes.
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Affiliation(s)
- S Jayakumar
- Post-Graduate and Research Department of Chemistry, The New College (Autonomous), Chennai 600 014, India
| | - D Mahendiran
- Post-Graduate and Research Department of Chemistry, The New College (Autonomous), Chennai 600 014, India
| | - T Srinivasan
- Department of Physics, Vel Tech University, Chennai 600 062, India
| | - G Mohanraj
- Post-Graduate and Research Department of Botany, Pachaiyappa's College, Chennai 600 030, India
| | - A Kalilur Rahiman
- Post-Graduate and Research Department of Chemistry, The New College (Autonomous), Chennai 600 014, India.
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Arthi P, Shobana S, Srinivasan P, Mitu L, Kalilur Rahiman A. Synthesis, characterization, biological evaluation and docking studies of macrocyclic binuclear manganese(II) complexes containing 3,5-dinitrobenzoyl pendant arms. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2015; 143:49-58. [PMID: 25710114 DOI: 10.1016/j.saa.2015.01.122] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/13/2014] [Revised: 12/15/2014] [Accepted: 01/31/2015] [Indexed: 06/04/2023]
Abstract
A series of bis(phenoxo) bridged binuclear manganese(II) complexes of the type [Mn2L(1-3)](ClO4)2 (1-3) containing 3,5-dinitrobenzoyl pendant-arms have been synthesized by cyclocondensation of 2,6-diformyl-4-R-phenols (where R=CH3, C(CH3)3 or Br) with 2,2'-3,5-dinitrobenzoyliminodi(ethylamine) trihydrochloride in the presence of manganese(II) perchlorate. The IR spectra of complexes indicate the presence of uncoordinated perchlorate anions. The UV-Vis spectra of complexes suggest the distorted octahedral geometry around manganese(II) nuclei. The EPR spectra of Mn(II) complexes show a broad signal with g value 2.03-2.04, which is characteristic for octahedral high spin Mn(2+) complex. The observed room temperature magnetic moment values of the Mn(II) complexes (5.60-5.62B.M.) are less than the normal value (5.92B.M.), indicating weak antiferromagnetic coupling interaction between the two metal ions. Electrochemical studies of the complexes show two distinct quasi-reversible one electron transfer processes in the cathodic (E(1)pc=-0.73 to -0.76V, E(2)pc=-1.30 to -1.36V), and anodic (E(1)pa=1.02-1.11V, E(2)pa=1.32-1.79V) potential regions. Antibacterial efficacy of complexes have been screened against four Gram (-ve) and two Gram (+ve) bacterial strains. The DNA interaction studies suggest that these complexes bind with CT-DNA by intercalation, giving the binding affinity in the order 1>2>3. All the complexes display significant cleavage activity against circular plasmid pBR322 DNA. Docking simulation was performed to insert complexes into the crystal structure of EGFR tyrosine kinase and B-DNA at active site to determine the probable binding mode.
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Affiliation(s)
- P Arthi
- Post-Graduate and Research Department of Chemistry, The New College (Autonomous), Chennai 600 014, India
| | - S Shobana
- Department of Bioinformatics, School of Bioengineering, SRM University, Kattankulathur 603 203, India
| | - P Srinivasan
- Department of Bioinformatics, Alagappa University, Karaikudi 630 003, India
| | - L Mitu
- Department of Chemistry, Faculty of Science, University of Pitesti, Pitesti 110 040, Romania
| | - A Kalilur Rahiman
- Post-Graduate and Research Department of Chemistry, The New College (Autonomous), Chennai 600 014, India.
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Ravichandran J, Gurumoorthy P, Imran Musthafa MA, Kalilur Rahiman A. Antioxidant, DNA binding and nuclease activities of heteroleptic copper(II) complexes derived from 2-((2-(piperazin-1-yl)ethylimino)methyl)-4-substituted phenols and diimines. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2014; 133:785-793. [PMID: 24998685 DOI: 10.1016/j.saa.2014.06.045] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/15/2014] [Revised: 05/27/2014] [Accepted: 06/03/2014] [Indexed: 06/03/2023]
Abstract
A series of heteroleptic copper(II) complexes of the type [CuL(1-4)(diimine)](ClO4)2 (1-8) [L(1-4)=2-((2-(piperazin-1-yl)ethylimino)methyl)-4-substituted phenols, and diimine=2,2'-bipyridyl (bpy) or 1,10-phenanthroline (phen)], have been synthesized and characterized by spectroscopic methods. The IR spectra of complexes indicate the presence of uncoordinated perchlorate anions and the electronic spectra revealed the square pyramidal geometry with N4O coordination environment around copper(II) nuclei. Electrochemical studies of the mononuclear complexes evidenced one-electron irreversible reduction wave in the cathodic region. The EPR spectra of complexes with g|| (2.206-2.214) and A|| (154-172×10(-)(4)cm(-)(1)) values support the square-based CuN3O coordination chromophore and the presence of unpaired electron localized in [Formula: see text] ground state. Antioxidant studies against DPPH revealed effective radical scavenging properties of the synthesized complexes. Binding studies suggest that the heteroleptic copper(II) complexes interact with calf thymus DNA (CT-DNA) through minor-groove and electrostatic interaction, and all the complexes display pronounced nuclease activity against supercoiled pBR322 DNA.
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Affiliation(s)
- J Ravichandran
- Post-Graduate and Research Department of Chemistry, The New College (Autonomous), Chennai 600 014, India; Research and Development Department, Amrutanjan Healthcare Limited, Mylapore, Chennai 600 004, India
| | - P Gurumoorthy
- Post-Graduate and Research Department of Chemistry, The New College (Autonomous), Chennai 600 014, India
| | - M A Imran Musthafa
- Post-Graduate and Research Department of Chemistry, The New College (Autonomous), Chennai 600 014, India
| | - A Kalilur Rahiman
- Post-Graduate and Research Department of Chemistry, The New College (Autonomous), Chennai 600 014, India.
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Gurumoorthy P, Mahendiran D, Prabhu D, Arulvasu C, Rahiman AK. Magneto-structural correlation, antioxidant, DNA interaction and growth inhibition activities of new chloro-bridged phenolate complexes. RSC Adv 2014. [DOI: 10.1039/c4ra06941b] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The consistent stability constants as well as antioxidant, DNA interaction and cytotoxicity efficacy of chloro-bridged complexes have been established.
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Affiliation(s)
- Perumal Gurumoorthy
- Post-Graduate and Research Department of Chemistry
- The New College (Autonomous)
- Chennai-600 014, India
| | - Dharmasivam Mahendiran
- Post-Graduate and Research Department of Chemistry
- The New College (Autonomous)
- Chennai-600 014, India
| | - Durai Prabhu
- Department of Zoology
- University of Madras
- Chennai-600 025, India
| | | | - Aziz Kalilur Rahiman
- Post-Graduate and Research Department of Chemistry
- The New College (Autonomous)
- Chennai-600 014, India
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