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Korać Jačić J, Bajuk-Bogdanović D, Savić S, Božić Cvijan B, Spasojević I, Milenković MR. Coordination of hydralazine with Cu 2+ at acidic pH promotes its oxidative degradation at neutral pH. J Inorg Biochem 2023; 243:112181. [PMID: 36931150 DOI: 10.1016/j.jinorgbio.2023.112181] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2023] [Revised: 02/22/2023] [Accepted: 03/06/2023] [Indexed: 03/12/2023]
Abstract
Hydralazine (HL), a frequently prescribed oral antihypertensive drug, shows redox interactions with transition metals such as copper that are not fully understood. Copper may be present at high concentrations in the digestive tract and can affect oral drugs. An important parameter for such interactions is pH, which changes from acidic in the gastric juice to neutral pH in intestines. In this study, we examined interactions of HL with Cu2+ ions in conditions that mimic pH shift in the digestive tract using UV-Vis, Raman and EPR spectroscopy, cyclic voltammetry and oximetry. In the acidic solution, Cu2+ formed a stable mononuclear complex with two bidentate coordinated HL molecules. On the other hand, at neutral pH, Cu2+ initiated oxidation and degradation of HL. The degradation was more rapid in the HL-Cu2+ system that was initially prepared at acidic pH and then shifted to neutral pH. The formation of the complex at acidic pH increases the availability of Cu2+ for redox reactions after the shift to neutral pH at which Cu2+ is poorly soluble. These results imply that the change of pH along the digestive tract may promote HL degradation by allowing the formation of the complex at gastric pH which makes Cu2+ available for subsequent oxidation of HL at neutral pH.
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Affiliation(s)
- Jelena Korać Jačić
- Life Sciences Department, University of Belgrade - Institute for Multidisciplinary Research, Kneza Višeslava 1, 11000 Belgrade, Serbia.
| | - Danica Bajuk-Bogdanović
- Faculty of Physical Chemistry, University of Belgrade, Studentski trg 12-16, 11000 Belgrade, Serbia
| | - Slađana Savić
- Faculty of Chemistry, University of Belgrade, Studentski trg 12-16, 11000 Belgrade, Serbia
| | - Bojana Božić Cvijan
- Department of Pharmacology, Clinical Pharmacology and Toxicology, Faculty of Medicine, University of Belgrade, P.O. Box 38, 11000 Belgrade, Serbia
| | - Ivan Spasojević
- Life Sciences Department, University of Belgrade - Institute for Multidisciplinary Research, Kneza Višeslava 1, 11000 Belgrade, Serbia
| | - Milica R Milenković
- Faculty of Chemistry, University of Belgrade, Studentski trg 12-16, 11000 Belgrade, Serbia.
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2
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Synthesis, structural characterization and DNA binding properties of phthalazinylhydrazone-furan and triazolophthalazine-ferrocene compounds. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.134471] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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3
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Pincer Complexes Derived from Tridentate Schiff Bases for Their Use as Antimicrobial Metallopharmaceuticals. INORGANICS 2022. [DOI: 10.3390/inorganics10090134] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Within the current challenges in medicinal chemistry, the development of new and better therapeutic agents effective against infectious diseases produced by bacteria, fungi, viruses, and parasites stands out. With chemotherapy as one of the main strategies against these diseases focusing on the administration of organic and inorganic drugs, the latter is generally based on the synergistic effect produced by the formation of metal complexes with biologically active organic compounds. In this sense, Schiff bases (SBs) represent and ideal ligand scaffold since they have demonstrated a broad spectrum of antitumor, antiviral, antimicrobial, and anti-inflammatory activities, among others. In addition, SBs are synthesized in an easy manner from one-step condensation reactions, being thus suitable for facile structural modifications, having the imine group as a coordination point found in most of their metal complexes, and promoting chelation when other donor atoms are three, four, or five bonds apart. However, despite the wide variety of metal complexes found in the literature using this type of ligands, only a handful of them include on their structures tridentate SBs ligands and their biological evaluation has been explored. Hence, this review summarizes the most important antimicrobial activity results reported this far for pincer-type complexes (main group and d-block) derived from SBs tridentate ligands.
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4
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Ali Mohammed Al-Ahmed Z. Novel Cr(III), Ni(II), and Zn(II) complexes of thiocarbamide derivative: Synthesis, investigation, theoretical, catalytic, potentiometric, molecular docking and biological studies. ARAB J CHEM 2022. [DOI: 10.1016/j.arabjc.2022.104104] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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5
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Hegde PL, Bhat SS, Revankar VK, Shaikh SA, Kumara K, NK L. Syntheses, structural characterization and evaluation of the anti-tubercular activity of copper (II) complexes containing 3-methoxysalicylaldehyde-4-methylthiosemicarbazone. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.132589] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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6
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Abdelrahman MS, Omar FM, Saleh AA, El-ghamry MA. Synthesis, molecular modeling, and docking studies of a new pyridazinone-acid hydrazone ligand, and its nano metal complexes. Spectroscopy, thermal analysis, electrical properties, DNA cleavage, antitumor, and antimicrobial activities. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2021.131947] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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7
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Kargar H, Fallah-Mehrjardi M, Behjatmanesh-Ardakani R, Munawar KS, Ashfaq M, Tahir MN. Diverse coordination of isoniazid hydrazone Schiff base ligand towards iron(III): Synthesis, characterization, SC-XRD, HSA, QTAIM, MEP, NCI, NBO and DFT study. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2021.131691] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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8
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Deferasirox pyridine solvate and its Cu(II) complex: Synthesis, crystal structure, Hirshfeld surface analysis, antimicrobial assays and antioxidant activity. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2021.131525] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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9
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Khalil TE, Soliman SM, Khalil NA, El‐Faham A, Foro S, El‐Dissouky A. Synthesis, structure, X‐ray photoelectron spectroscopy (XPS), and antimicrobial, anticancer, and antioxidant activities of Co (III) complexes based on the antihypertensive hydralazine. Appl Organomet Chem 2022. [DOI: 10.1002/aoc.6565] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Tarek E. Khalil
- Chemistry Department, Faculty of Science Alexandria University Alexandria Egypt
| | - Saied M. Soliman
- Chemistry Department, Faculty of Science Alexandria University Alexandria Egypt
| | - Nessma A. Khalil
- Chemistry Department, Faculty of Science Alexandria University Alexandria Egypt
| | - Ayman El‐Faham
- Chemistry Department, Faculty of Science Alexandria University Alexandria Egypt
| | - Sabine Foro
- FB Material Wissenschaft, FG Strukturforschung Technische Universitaet Darmstadt Darmstadt Germany
| | - Ali El‐Dissouky
- Chemistry Department, Faculty of Science Alexandria University Alexandria Egypt
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10
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Akbari Z, Montazerozohori M, Hoseini SJ, Naghiha R, Hayati P, Bruno G, Santoro A, White JM. Synthesis, crystal structure, Hirshfeld surface analyses, antimicrobial activity, and thermal behavior of some novel nanostructure hexa‐coordinated Cd(II) complexes: Precursors for CdO nanostructure. Appl Organomet Chem 2021. [DOI: 10.1002/aoc.6181] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Zahra Akbari
- Department of Chemistry Yasouj University Yasouj Iran
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences University of Messina Messina Italy
| | | | | | - Reza Naghiha
- Department of Animal Sciences, Faculty of Agriculture Yasouj University Yasouj Iran
| | - Payam Hayati
- Persian Gulf Science and Technology Park Nano Gostaran Navabegh Fardaye Dashtestan Company Borazjan Iran
| | - Giuseppe Bruno
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences University of Messina Messina Italy
| | - Antonio Santoro
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences University of Messina Messina Italy
| | - Jonathan M. White
- School of Chemistry and BIO‐21 Institute University of Melbourne Parkville Victoria Australia
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11
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Aly SA, Elganzory HH, Mahross MH, Abdalla EM. Quantum chemical studies and effect of gamma irradiation on the spectral, thermal, X‐ray diffraction and DNA interaction with Pd (II), Cu(I), and Cd (II) of hydrazone derivatives. Appl Organomet Chem 2021. [DOI: 10.1002/aoc.6153] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Samar A. Aly
- Department of Environmental Biotechnology, Genetic Engineering and Biotechnology Research Institute University of Sadat City Sadat City Egypt
| | - Hussein H. Elganzory
- Chemistry Department, College of Science Qassim University Buraidah Saudi Arabia
| | - Mahmoud H. Mahross
- Chemistry Department Faculty of Science, Al‐Azhar University Assiut Egypt
| | - Ehab M. Abdalla
- Chemistry Department, Faculty of Science New Valley University Alkharga Egypt
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12
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Synthesis and Biological Evaluation of Novel Zn(II) and Cd(II) Schiff Base Complexes as Antimicrobial, Antifungal, and Antioxidant Agents. Bioinorg Chem Appl 2020. [DOI: 10.1155/2020/8866382] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
(E)-N,N-Dimethyl-2-((E-1-(2-(p-tolyl)hydrazono)propan-2-ylidene)hydrazine-1-carbothioamide (DMPTHP) and their Zn(II) and Cd(II) complexes have been synthesized and characterized. Different tools of analysis such as elemental analyses, IR, mass spectra, and 1H-NMR measurements were used to elucidate the structure of the synthesized compounds. According to these spectral results, the DMPTHP ligand behaved as a mononegatively charged tridentate anion. Modeling and docking studies were investigated and discussed. Novel Schiff base (DMPTHP) ligand protonation constants and their formation constants with Cd(II) and Zn(II) ions were measured in 50% DMSO solution at 15°C, 25°C, and 35°C at I = 0.1 mol·dm−3 NaNO3. The solution speciation of different species was measured in accordance with pH. Calculation and discussion of the thermodynamic parameters were achieved. Both log K1 and –ΔH1, for M(II)-thiosemicarbazone complexes were found to be somewhat larger than log K2 and –ΔH2, demonstrating a shift in the dentate character of DMPTHP from tridentate in 1 : 1 chelates to bidentate in 1 : 2; M : L chelates and steric hindrance were generated by addition of the 2nd molecule. The compounds prepared have significant activity as antioxidants, similar to ascorbic acid. It is hoped that the results will be beneficial to antimicrobial agent chemistry. The formed compounds acted as a potent antibacterial agent. Molecular docking studies were investigated and have proved that DMPTHP as antibacterial agents act on highly resistant strains of E. coli and also as an anticancer agent.
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13
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Althobiti HA, Zabin SA. New Schiff bases of 2-(quinolin-8-yloxy)acetohydrazide and their Cu(ii), and Zn(ii) metal complexes: their in vitro antimicrobial potentials and in silico physicochemical and pharmacokinetics properties. OPEN CHEM 2020. [DOI: 10.1515/chem-2020-0085] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
AbstractThe purpose of this work was to prepare Schiff base ligands containing quinoline moiety and using them for preparing Cu(ii) and Zn(ii) complexes. Four bidentate Schiff base ligands (SL1–SL4) with quinoline hydrazine scaffold and a series of mononuclear Cu(ii) and Zn(ii) complexes were successfully prepared and characterized. The in vitro antibacterial and antifungal potential experimentation revealed that the ligands exhibited moderate antibacterial activity against the Gram-positive bacterial types and were inactive against the Gram-negative bacteria and the fungus strains. The metal complexes showed some enhancement in the activity against the Gram-positive bacterial strains and were inactive against the Gram-negative bacteria and the fungus strains similar to the parent ligands. The complex [Cu(SL1)2] was the most toxic compound against both Gram-positive S. aureus and E. faecalis bacteria. The in silico physicochemical investigation revealed that the ligand SL4 showed highest in silico absorption (82.61%) and the two complexes [Cu(SL4)2] and [Zn(SL4)2] showed highest in silico absorption with 56.23% for both compounds. The in silico pharmacokinetics predictions showed that the ligands have high gastrointestinal (GI) absorption and the complexes showed low GI absorption. The ligands showed a good bioavailability score of 0.55 where the complexes showed moderate to poor bioavailability.
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Affiliation(s)
- Hanan A. Althobiti
- Chemistry Department, Faculty of Science, Albaha University, Al-Baha, Saudi Arabia
| | - Sami A. Zabin
- Chemistry Department, Faculty of Science, Albaha University, Al-Baha, Saudi Arabia
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14
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Popov LD, Raspopova EA, Borodkin SA, Tupolova YP, Levchenkov SI, Shcherbakov IN. Synthesis and Selected Physico-Chemical Properties of 2-Aminopyridine-3-carbaldehyde and the Related Metal Complexes. RUSS J GEN CHEM+ 2020. [DOI: 10.1134/s1070363220030135] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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15
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Soliman SM, Albering JH, El‐Faham A. Cu(II)‐promoted cyclization of hydrazonophthalazine to triazolophthalazine; Synthesis and structure diversity of six novel Cu(II)‐triazolophthalazine complexes. Appl Organomet Chem 2019. [DOI: 10.1002/aoc.4992] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Saied M. Soliman
- Department of Chemistry, Faculty of ScienceAlexandria University P.O. Box 426, Ibrahimia Alexandria 21321 Egypt
- Department of Chemistry, Rabigh College of Science and ArtKing Abdulaziz University P.O. Box 344 Rabigh 21911 Saudi Arabia
| | - Jörg H. Albering
- Graz University of Technology Mandellstr. 11/III A‐8010 Graz Austria
| | - Ayman El‐Faham
- Department of Chemistry, Faculty of ScienceAlexandria University P.O. Box 426, Ibrahimia Alexandria 21321 Egypt
- Department of Chemistry, College of ScienceKing Saud University P. O. Box 2455 Riyadh 11451 Saudi Arabia
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16
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Aldulmani SAA, Alaghaz AMA. Synthesis, spectroscopic characterization, quantum chemical calculations, evaluation of biological and cytotoxic activities, and molecular docking studies of 2‐hydroxy‐N′‐(4,5,6‐trimethoxy‐2,3‐dihydro‐1H‐inden‐1‐ylidene) benzohydrazide and its Cu(II), Co(II), Ni(II), and Zn(II) complexes. J CHIN CHEM SOC-TAIP 2019. [DOI: 10.1002/jccs.201800465] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Sharah A. A. Aldulmani
- Department of Chemistry, Faculty of Science for GirlsKing Khalid University Abha Saudi Arabia
| | - Abdel‐Nasser M. A. Alaghaz
- Department of Chemistry, Faculty of ScienceJazan University Jazan Saudi Arabia
- Department of Chemistry, Faculty of Science (Boys)Al‐Azhar University Cairo Egypt
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17
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Synthesis and characterization of 5- and 7-donor Schiff base ligands and spectroscopic evidence for tautomerism: A crystal structure showing tautomeric forms within one ligand. J Mol Struct 2019. [DOI: 10.1016/j.molstruc.2019.02.054] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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18
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Xiao HM, Wang X, Yang X, Zheng F, Feng YQ. Hydralazine derivative of aldehyde: A new type of [M - H] + ion formed in electrospray ionization mass spectrometry. JOURNAL OF MASS SPECTROMETRY : JMS 2019; 54:239-249. [PMID: 30650224 DOI: 10.1002/jms.4330] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2018] [Revised: 12/19/2018] [Accepted: 01/08/2019] [Indexed: 06/09/2023]
Abstract
Hydralazine has been widely employed in the development of drugs, derivatization reagents, and ligands. In the present work, we reported a new type of dehydrogenated ion [M - H]+ that was produced from the hydralazine derivative of hexanal in electrospray ionization mass spectrometry (ESI-MS). The formation of [M - H]+ ions in the ESI-MS was found to be independent on the mobile phase composition of the liquid chromatography and ESI source parameters. A series of hydralazine derivatives of aldehyde were investigated to confirm this phenomenon. The results showed that hydralazine derivatives of aldehydes that contained an sp3 hybridization carbon with a hydrogen at the α-position of aldehydes could form the unexpected [M - H]+ ions, whereas hydralazine derivative of acetone could only generate [M + H]+ ion in the ESI-MS. We proposed the possible formation mechanism of [M - H]+ ion for the hydralazine derivatives of aldehydes: the [M - H]+ ion was possibly formed by the loss a hydrogen molecule (H2 ) from the protonated ion [M + H]+ . The results obtained from density functional theory (DFT) calculations supported this proposed formation mechanism of [M - H]+ ion.
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Affiliation(s)
- Hua-Ming Xiao
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), Department of Chemistry, Wuhan University, Wuhan, 430072, People's Republic of China
| | - Xian Wang
- Key Laboratory of Catalysis and Materials Science of the State Ethnic Affairs Commission and Ministry of Education, College of Chemistry and Materials Science, South-Central University for Nationalities, Wuhan, Hubei, 430074, People's Republic of China
| | - Xing Yang
- College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, People's Republic of China
| | - Feng Zheng
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), Department of Chemistry, Wuhan University, Wuhan, 430072, People's Republic of China
| | - Yu-Qi Feng
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), Department of Chemistry, Wuhan University, Wuhan, 430072, People's Republic of China
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19
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Xiao Y, Cao C. Influence of substituent effects on the coordination ability of salicylaldehyde Schiff bases. J COORD CHEM 2019. [DOI: 10.1080/00958972.2018.1540780] [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)
- Yan Xiao
- School of Resource Environment and Safety Engineering, School of Chemistry and Chemical Engineering, Key Laboratory of Theoretical Organic Chemistry and Function Molecule, Ministry of Education, Hunan University of Science and Technology, Xiangtan, China
| | - Chenzhong Cao
- School of Resource Environment and Safety Engineering, School of Chemistry and Chemical Engineering, Key Laboratory of Theoretical Organic Chemistry and Function Molecule, Ministry of Education, Hunan University of Science and Technology, Xiangtan, China
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20
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Utthra PP, Raman N. Probing the potency of triazole tethered Schiff base complexes and the effect of substituents on their biological attributes. Int J Biol Macromol 2018; 116:194-207. [DOI: 10.1016/j.ijbiomac.2018.05.009] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2018] [Revised: 04/21/2018] [Accepted: 05/02/2018] [Indexed: 01/14/2023]
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21
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Synthesis, structural characterization, DFT studies and biological activity of Cu(II) and Ni(II) complexes of novel hydrazone. Inorganica Chim Acta 2018. [DOI: 10.1016/j.ica.2018.04.038] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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22
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D'Acunto CW, Kaplánek R, Gbelcová H, Kejík Z, Bříza T, Vasina L, Havlík M, Ruml T, Král V. Metallomics for Alzheimer's disease treatment: Use of new generation of chelators combining metal-cation binding and transport properties. Eur J Med Chem 2018. [PMID: 29525434 DOI: 10.1016/j.ejmech.2018.02.084] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Alzheimer's disease (AD) is a progressive neurodegenerative disorder affecting tens of million people. Currently marketed drugs have limited therapeutic efficacy and only slowing down the neurodegenerative process. Interestingly, it has been suggested that biometal cations in the amyloid beta (Aβ) aggregate deposits contribute to neurotoxicity and degenerative changes in AD. Thus, chelation therapy could represent novel mode of therapeutic intervention. Here we describe the features of chelators with therapeutically relevant mechanism of action. We have found that the tested compounds effectively reduce the toxicity of exogenous Aβ and suppress its endogenous production as well as decrease oxidative stress. Cholyl hydrazones were found to be the most active compounds. In summary, our data show that cation complexation, together with improving transport efficacy may represent basis for eventual treatment strategy in AD.
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Affiliation(s)
| | - Robert Kaplánek
- University of Chemistry and Technology, Technická 5, 16628 Prague 6, Czech Republic; First Faculty of Medicine-BIOCEV, Charles University, Kateřinská 32, 12108 Prague 2, Czech Republic
| | - Helena Gbelcová
- University of Chemistry and Technology, Technická 5, 16628 Prague 6, Czech Republic; Institute of Medical Biology, Genetics and Clinical Genetics, Faculty of Medicine, Comenius University, Sasinkova 4, 81101 Bratislava, Slovakia
| | - Zdeněk Kejík
- First Faculty of Medicine-BIOCEV, Charles University, Kateřinská 32, 12108 Prague 2, Czech Republic
| | - Tomáš Bříza
- University of Chemistry and Technology, Technická 5, 16628 Prague 6, Czech Republic; First Faculty of Medicine-BIOCEV, Charles University, Kateřinská 32, 12108 Prague 2, Czech Republic
| | - Liudmila Vasina
- University of Chemistry and Technology, Technická 5, 16628 Prague 6, Czech Republic; First Faculty of Medicine-BIOCEV, Charles University, Kateřinská 32, 12108 Prague 2, Czech Republic
| | - Martin Havlík
- University of Chemistry and Technology, Technická 5, 16628 Prague 6, Czech Republic; First Faculty of Medicine-BIOCEV, Charles University, Kateřinská 32, 12108 Prague 2, Czech Republic
| | - Tomáš Ruml
- University of Chemistry and Technology, Technická 5, 16628 Prague 6, Czech Republic.
| | - Vladimír Král
- University of Chemistry and Technology, Technická 5, 16628 Prague 6, Czech Republic; First Faculty of Medicine-BIOCEV, Charles University, Kateřinská 32, 12108 Prague 2, Czech Republic.
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Kumaravel G, Ponya Utthra P, Raman N. Exploiting the biological efficacy of benzimidazole based Schiff base complexes with l-Histidine as a co-ligand: Combined molecular docking, DNA interaction, antimicrobial and cytotoxic studies. Bioorg Chem 2018; 77:269-279. [PMID: 29421702 DOI: 10.1016/j.bioorg.2018.01.024] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2017] [Revised: 01/03/2018] [Accepted: 01/14/2018] [Indexed: 10/18/2022]
Abstract
Four new metal complexes were synthesized and screened for their cytotoxic activity after sufficient assertion from the preliminary DNA binding studies. The metal complexes could bind to CT-DNA through intercalation binding mode. This has also been confirmed by the molecular docking studies. The DNA cleavage efficiencies of these complexes with pBR322 DNA were investigated by gel electrophoresis. The complexes were found to promote the cleavage of pBR322 DNA from the supercoiled form I to the open circular form II in the presence of an oxidizing agent (H2O2). The in vitro chemosensitivity of the studied complexes exhibits significant cytotoxic effects, compared to those reported for cisplatin. These findings represent a prompting to search for the probable interaction of these complexes with other cellular elements of fundamental consequence in cell proliferation. The in vitro anticancer activities indicate that the Cu(II) complex is active against the selected human tumor cell lines, and the order of in vitro anticancer activities is consistent with the DNA-binding affinities. Towards noncancerous cell line, Cu(II) complex exhibits very low toxicity. On the other hand all the complexes have been found to exhibit cytotoxic effects against cancerous cell lines with potency more than that of the widely used drug cisplatin and hence they have the potential to act as promising anticancer agents. Captivatingly, they are non-toxic to normal cell lymphocytes revealing that they are selective in killing only the cancer cells.
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Affiliation(s)
- Ganesan Kumaravel
- Research Department of Chemistry, VHNSN College, Virudhunagar 626 001, India
| | | | - Natarajan Raman
- Research Department of Chemistry, VHNSN College, Virudhunagar 626 001, India.
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24
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Synthesis, characterization and photophysical studies of zinc(II) complexes derived from a hydralazine hydrazone. J Photochem Photobiol A Chem 2018. [DOI: 10.1016/j.jphotochem.2017.10.024] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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25
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Iqbal S, Yun JI. Decontamination of radionuclides by functionalized mesoporous silica under gamma irradiation. RSC Adv 2018; 8:32211-32220. [PMID: 35547485 PMCID: PMC9086197 DOI: 10.1039/c8ra05939j] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2018] [Accepted: 09/11/2018] [Indexed: 11/21/2022] Open
Abstract
Schiff base functionalized mesoporous silica (SA-SBA-15) was synthesized by the co-condensation method to remove the radioactive corrosion products from contaminated water coming from nuclear installations.
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Affiliation(s)
- Sajid Iqbal
- Department of Nuclear and Quantum Engineering
- KAIST
- Daejeon 34141
- Republic of Korea
- Chemistry Division
| | - Jong-Il Yun
- Department of Nuclear and Quantum Engineering
- KAIST
- Daejeon 34141
- Republic of Korea
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Transition metal complexes of a hydrazone derived from hydralazine hydrochloride and 3,5-di-tert-butylsalicylaldehyde. TRANSIT METAL CHEM 2017. [DOI: 10.1007/s11243-017-0194-0] [Citation(s) in RCA: 3] [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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27
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Kumaravel G, Utthra PP, Raman N. DNA fastening and scission actions of Cu(II), Co(II), Ni(II) and Zn(II) complexes: synthesis, spectral characterization and cytotoxic study. Appl Organomet Chem 2017. [DOI: 10.1002/aoc.4010] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Ganesan Kumaravel
- Research Department of ChemistryVHNSN College Virudhunagar 626 001 Tamil Nadu India
| | | | - Natarajan Raman
- Research Department of ChemistryVHNSN College Virudhunagar 626 001 Tamil Nadu India
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28
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Gull P, Hashmi AA. Synthesis, XRD and spectroscopic characterization of pharmacologically active Cu(II) and Zn(II) complexes. J Mol Struct 2017. [DOI: 10.1016/j.molstruc.2017.03.053] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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29
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Biologically Active Cu(II), Co(II), Ni(II) and Zn(II) Complexes of Pyrimidine Derivative Schiff Base: DNA Binding, Antioxidant, Antibacterial and In Vitro Anticancer Studies. J Fluoresc 2017; 27:1801-1814. [DOI: 10.1007/s10895-017-2118-y] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2016] [Accepted: 05/14/2017] [Indexed: 10/19/2022]
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30
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El-Faham A, Ghabbour HA. Crystal structure of ( E)-1-(2-(thiophen-2-ylmethylene)hydrazinyl)phthalazine hydrochloride–ethanol (1/1), C 15H 17ClN 4OS. Z KRIST-NEW CRYST ST 2017. [DOI: 10.1515/ncrs-2016-0168] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
C15H17ClN4OS, triclinic, P1̅ (no. 2), a = 7.5069(2) Å, b = 9.4329(3) Å, c = 11.9723(4) Å, α = 81.6963(11)°, β = 78.2307(9)°, γ = 86.700(1)°, V = 820.91(4) Å3, Z = 2, R
gt(F) = 0.0621, wR
ref(F
2) = 0.1923, T = 100 K.
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Affiliation(s)
- Ayman El-Faham
- Department of Chemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia ; and Department of Chemistry, Faculty of Science, Alexandria University, P.O. Box 426, Ibrahimia, Alexandria 21321, Egypt
| | - Hazem A. Ghabbour
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, P. O. Box 2457, Riyadh 11451, Saudi Arabia ; and Department of Medicinal Chemistry, Faculty of Pharmacy, University of Mansoura, Mansoura 35516, Egypt
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31
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Mixed-ligand complex formation of tenoxicam drug with some transition metal ions in presence of valine: Synthesis, characterization, molecular docking, potentiometric and evaluation of the humeral immune response of calves. J Mol Liq 2016. [DOI: 10.1016/j.molliq.2016.09.065] [Citation(s) in RCA: 64] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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32
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Metal-based biologically active azoles and β-lactams derived from sulfa drugs. Bioorg Med Chem 2016; 24:1121-31. [DOI: 10.1016/j.bmc.2016.01.041] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2015] [Revised: 01/13/2016] [Accepted: 01/20/2016] [Indexed: 11/23/2022]
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33
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Selvaganapathy M, Pravin N, Muniyandi V, Nazeer M, Raman N. Exploring the photochemosensitivity by novel cysteine-based mixed ligand complexes. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2016; 157:77-88. [PMID: 26894848 DOI: 10.1016/j.jphotobiol.2016.02.008] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2015] [Accepted: 02/03/2016] [Indexed: 11/25/2022]
Abstract
A new series of cysteine-based metal(II) complexes with 2,2'-bipyridine or 1,10-phenanthroline as co-ligand have been prepared and characterized. Their DNA binding and cleavage properties have been studied. The analytical and spectroscopic data of complexes 1-18 reveal that the complexes adopt an octahedral geometry around the central metal ion in which the cysteine is coordinated through NS and NN atoms, respectively. Spectroscopic titration and viscosity measurements reveal that the complexes bind to DNA through an intercalative mode. Electrophoresis measurements exhibit that they cleave pBR322 DNA efficiently in the presence of 3-mercaptopropionic acid (MPA), probably via hydrolytic mechanism with the involvement of (•)OH. The in vitro anticancer activities indicate that the Cu(II) complexes are active against four selected human tumor cell lines. Furthermore, it is remarkable that all the complexes exhibit significant photocytotoxicity against human breast cancer cell lines (MCF-7) with a potency more than the widely used drugs photofrin and cisplatin indicating that they have the potential to act as effective anticancer drugs in a dose-dependent manner.
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Affiliation(s)
| | - Narayanaperumal Pravin
- Research Department of Chemistry, VHNSN College, Virudhunagar 626 001, Tamil Nadu, India
| | - Vellaichamy Muniyandi
- Research Department of Chemistry, VHNSN College, Virudhunagar 626 001, Tamil Nadu, India
| | - Mohammed Nazeer
- Research Department of Chemistry, VHNSN College, Virudhunagar 626 001, Tamil Nadu, India
| | - Natarajan Raman
- Research Department of Chemistry, VHNSN College, Virudhunagar 626 001, Tamil Nadu, India.
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34
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Arun T, Subramanian R, Raman N. Novel bio-essential metal based complexes linked by heterocyclic ligand: Synthesis, structural elucidation, biological investigation and docking analysis. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2015; 154:67-76. [PMID: 26690017 DOI: 10.1016/j.jphotobiol.2015.11.011] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/07/2015] [Revised: 11/06/2015] [Accepted: 11/10/2015] [Indexed: 11/30/2022]
Abstract
New series of bio-essential metal based complexes linked by Schiff base ligand (L) and 2,2'-bipyridine (bpy) have been synthesized and characterized by diverse spectral techniques such as elemental analysis, magnetic susceptibility, molar conductivity measurements, FT-IR, UV-Vis., (1)H NMR, (13)C NMR, EPR and Mass. The spectral data suggest that the metal complexes espouse octahedral geometry around the metal ions. Interactions of the complexes with CT DNA have been explored by electronic absorption, ethidium bromide displacement assay, viscosity measurements, cyclic voltammetry and differential pulse voltammetry in order to evaluate the possible DNA-binding mode and to calculate the corresponding DNA-binding constants. The DNA interaction studies propose that the intercalative mode of interaction and the complexes exhibit oxidative cleavage of pUC19 DNA in the presence of hydrogen peroxide as activator. The synthesized Schiff base ligand and its metal complexes have been screened for anti-microbial activity by micro dilution method against two Gram-positive bacteria (Staphylococcus aureus and Bacillus subtilis), two Gram-negative bacteria (Escherichia coli and Salmonella typhi) and three fungi strains (Fusarium solani, Aspergillus niger and Candida albicans) revealing that the complexes are good anti-pathogenic agents than the ligand. Moreover, molecular docking analysis has been performed to confirm the nature of binding of the complexes with DNA.
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Affiliation(s)
- T Arun
- Research Department of Chemistry, VHNSN College, Virudhunagar 626 001, Tamilnadu, India
| | - R Subramanian
- Centre for Scientific and Applied Research, PSN College of Engineering and Technology, Tirunelveli 627152, Tamilnadu, India
| | - N Raman
- Research Department of Chemistry, VHNSN College, Virudhunagar 626 001, Tamilnadu, India.
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35
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Antimicrobial activity, DNA cleavage, thermal analysis data and crystal structure of some new CdLX2 complexes: A supramolecular network. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2015; 55:462-70. [DOI: 10.1016/j.msec.2015.05.061] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/22/2014] [Revised: 04/22/2015] [Accepted: 05/20/2015] [Indexed: 11/24/2022]
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36
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Abdelkarim AT, Al-Shomrani MM, Rayan AM, El-Sherif AA. Mixed Ligand Complex Formation of Cetirizine Drug with Bivalent Transition Metal(II) Ions in the Presence of 2-Aminomethylbenzimidazole: Synthesis, Structural, Biological, pH-Metric and Thermodynamic Studies. J SOLUTION CHEM 2015. [DOI: 10.1007/s10953-015-0362-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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37
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Popov LD, Levchenkov SI, Shcherbakov IN, Aleksandrov GG, Starikova ZA, Lukov VV, Kogan VA. Molecular and crystal structure of iron(III) and nickel(II) complexes with 1′-phthalazinylhydrazones of heterocyclic carbonyl compounds. J STRUCT CHEM+ 2015. [DOI: 10.1134/s002247661501014x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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38
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Alaghaz ANM, Zayed ME, Alharbi SA. Synthesis, spectral characterization, molecular modeling and antimicrobial studies of tridentate azo-dye Schiff base metal complexes. J Mol Struct 2015. [DOI: 10.1016/j.molstruc.2014.12.013] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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39
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Thermodynamics, Chemical Speciation and Complex Formation Equilibria Studies of Binary and Mixed Ligand Complexes of Cu(II) with 2,2′-Bipyridyl and Some Aromatic Diamines. J SOLUTION CHEM 2015. [DOI: 10.1007/s10953-015-0293-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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40
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Levchenkov SI, Popov LD, Shcherbakov IN, Vlasenko VG, Tsaturyan AA, Beloborodov SS, Ionov AM, Kogan VA. Binuclear complexes of copper(II) with 1′-phthalazinylhydrazones of substituted salicylic aldehydes: Physico-chemical study and quantum-chemical simulation. RUSS J GEN CHEM+ 2014. [DOI: 10.1134/s1070363214100193] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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41
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Alaghaz ANM, Ammar YA, Bayoumi HA, Aldhlmani SA. Synthesis, spectral characterization, thermal analysis, molecular modeling and antimicrobial activity of new potentially N2O2 azo-dye Schiff base complexes. J Mol Struct 2014. [DOI: 10.1016/j.molstruc.2014.05.078] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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42
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Holló B, Magyari J, Živković-Radovanović V, Vučković G, Tomić ZD, Szilágyi IM, Pokol G, Mészáros Szécsényi K. Synthesis, characterisation and antimicrobial activity of bis(phthalazine-1-hydrazone)-2,6-diacetylpyridine and its complexes with CoIII, NiII, CuII and ZnII. Polyhedron 2014. [DOI: 10.1016/j.poly.2014.03.007] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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43
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Aljahdali MS, Elmalik YH, El-Reash GMA. Synthesis of some transition metal complexes of novel 1-methylpyrazole-3-aldehyde-4-(2-pyridyl) thiosemicarbazone: Spectroscopic and in vitro biological activity studies. ACTA ACUST UNITED AC 2014. [DOI: 10.5155/eurjchem.5.2.201-208.952] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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44
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Aljahdali MS, Abedelkarim AT, El-Sherif AA, Ahmed MM. Synthesis, characterization, equilibrium studies, and biological activity of complexes involving copper(II), 2-aminomethylthiophenyl-4-bromosalicylaldehyde Schiff base, and selected amino acids. J COORD CHEM 2014. [DOI: 10.1080/00958972.2014.900549] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Mutlaq S. Aljahdali
- Faculty of Science, Department of Chemistry, King Abdulaziz University, Jeddah, Kingdom of Saudi Arabia
| | | | - Ahmed A. El-Sherif
- Faculty of Science, Department of Chemistry, Cairo University, Cairo, Egypt
- Faculty of Arts and Science, Department of Chemistry, Northern Border University, Rafha, Kingdom of Saudi Arabia
| | - Mahmoud M. Ahmed
- New-Valley Faculty of Education, Department of Sciences and Mathematics, Assiut University, Assiut, Egypt
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45
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Aljahdali MS, El-Sherif AA, Hilal RH, Abdel-Karim AT. Mixed bivalent transition metal complexes of 1,10-phenanthroline and 2-aminomethylthiophenyl-4-bromosalicylaldehyde Schiff base: Spectroscopic, molecular modeling and biological activities. ACTA ACUST UNITED AC 2013. [DOI: 10.5155/eurjchem.4.4.370-378.803] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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46
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Levchenkov SI, Popov LD, Shcherbakov IN, Aleksandrov GG, Zubenko AA, Kogan VA. Tautomerism of substituted salicylaldehyde and 2-diphenylphosphinebenzaldehyde 1′-phthalazinylhydrazones: X-ray crystallography and quantum chemical modeling. J STRUCT CHEM+ 2013. [DOI: 10.1134/s0022476613050168] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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47
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El-Sherif AA, Aljahdali MS. Review: protonation, complex-formation equilibria, and metal–ligand interaction of salicylaldehyde Schiff bases. J COORD CHEM 2013. [DOI: 10.1080/00958972.2013.839027] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Ahmed A. El-Sherif
- Faculty of Science, Department of Chemistry, Cairo University, Cairo, Egypt
- Faculty of Arts and Science, Department of Chemistry, Northern Border University, Rafha, Saudi Arabia
| | - Mutlaq S. Aljahdali
- Faculty of Science, Department of Chemistry, King Abd Al-Aziz University, Jeddah, Saudi Arabia
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48
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Aljahdali M, EL-Sherif AA. Synthesis, characterization, molecular modeling and biological activity of mixed ligand complexes of Cu(II), Ni(II) and Co(II) based on 1,10-phenanthroline and novel thiosemicarbazone. Inorganica Chim Acta 2013. [DOI: 10.1016/j.ica.2013.06.040] [Citation(s) in RCA: 66] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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49
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Al-Mogren MM, Alaghaz ANMA, Ebrahem EA. Synthesis, spectroscopic, molecular orbital calculation, cytotoxic, molecular docking of DNA binding and DNA cleavage studies of transition metal complexes with N-benzylidene-N'-salicylidene-1,1-diaminopropane. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2013; 114:695-707. [PMID: 23831943 DOI: 10.1016/j.saa.2013.05.079] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2013] [Revised: 05/16/2013] [Accepted: 05/23/2013] [Indexed: 06/02/2023]
Abstract
Eight mononuclear chromium(III), manganese(II), iron(III), cobalt(II), nickel(II), copper(II), zinc(II) and cadmium(II) complexes of Schiff's base ligand were synthesized and determined by different physical techniques. The complexes are insoluble in common organic solvents but soluble in DMF and DMSO. The measured molar conductance values in DMSO indicate that the complexes are non-electrolytic in nature. All the eight metal complexes have been fully characterized with the help of elemental analyses, molecular weights, molar conductance values, magnetic moments and spectroscopic data. The analytical data helped to elucidate the structure of the metal complexes. The Schiff base is found to act as tridentate ligand using N2O donor set of atoms leading to an octahedral geometry for the complexes around all the metal ions. Quantum chemical calculations were performed with semi-empirical method to find the optimum geometry of the ligand and its complexes. Additionally in silico, the docking studies and the calculated pharmacokinetic parameters show promising futures for application of the ligand and complexes as high potency agents for DNA binding activity. The interaction of the complexes with calf thymus DNA (CT-DNA) has been investigated by UV absorption method, and the mode of CT-DNA binding to the complexes has been explored. Furthermore, the DNA cleavage activity by the complexes was performed. The Schiff base and their complexes have been screened for their antibacterial activity against bacterial strains [Staphylococcus aureus (RCMB010027), Staphylococcus epidermidis (RCMB010024), Bacillis subtilis (RCMB010063), Proteous vulgaris (RCMB 010085), Klebsiella pneumonia (RCMB 010093) and Shigella flexneri (RCMB 0100542)] and fungi [(Aspergillus fumigates (RCMB 02564), Aspergillus clavatus (RCMB 02593) and Candida albicans (RCMB05035)] by disk diffusion method. All the metal complexes have potent biocidal activity than the free ligand.
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50
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Prasanna MK, Sithambaresan M, Pradeepkumar K, Kurup MRP. 2-{(E)-[(2Z)-2-(1,2-Di-hydro-phthalazin-1-yl-idene)hydrazinyl-idene]meth-yl}phenol. Acta Crystallogr Sect E Struct Rep Online 2013; 69:o1522-3. [PMID: 24098212 PMCID: PMC3790393 DOI: 10.1107/s1600536813024203] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2013] [Accepted: 08/29/2013] [Indexed: 06/02/2023]
Abstract
The title compound, C15H12N4O, adopts an E conformation with respect to the azomethine bond and crystallizes in its hydrazinyl-idene tautomeric form. The dihedral angle between the ring systems is 15.98 (7)°. The phenol O-H group forms an intra-molecular O-H⋯N hydrogen bond. In the crystal, pairs of N-H⋯N and C-H⋯O hydrogen bonds link neighbouring mol-ecules into centrosymmetric dimers. These dimers are inter-connected by means of three types of π-π stacking inter-actions. One, with a centroid-centroid distance of 3.577 (1) Å [inter-planar separation = 3.4673 (6) Å], connects adjacent mol-ecules into centrosymmetric dimers. The other two inter-actions, on the outward facing sides of the dimers, are between phenol rings of neighboring mol-ecules [centroid-centroid separation = 3.7907 (13) Å and inter-planar separation = 3.5071 (8) Å], and between phthalazin units [centroid-centroid separation = 3.6001 (12) Å and inter-planar separation = 3.4891 (7) Å]. In combination, the π-π inter-actions lead to the formation of infinite layers with mol-ecules stacked along [0-11]. These layers are, in turn, connected with neighbouring layers through the N-H⋯N and C-H⋯O hydrogen bonds, yielding a three-dimensional supra-molecular architecture.
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Affiliation(s)
- M. K. Prasanna
- Department of Chemistry and Research Centre, PRNSS College, Mattanur 670 702, Kannur, Kerala, India
| | - M. Sithambaresan
- Department of Chemistry, Faculty of Science, Eastern University, Sri Lanka, Chenkalady, Sri Lanka
| | - K. Pradeepkumar
- Department of Chemistry and Research Centre, PRNSS College, Mattanur 670 702, Kannur, Kerala, India
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