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Ur Rahman H, Khan E, Muhammad M, Khan M, Ahmad Bhat M, Shahzada Khan G, Ali N. Antioxidant and Antibacterial Screening and Hg(II) Sensing, Activities of Cu(II)pyridine-2,6-dicarboxylate Complexes. ChemistryOpen 2024:e202400089. [PMID: 39051714 DOI: 10.1002/open.202400089] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2024] [Revised: 05/18/2024] [Indexed: 07/27/2024] Open
Abstract
In this study five different complexes of Cu(II) were synthesized for the purpose of environmentally notorious mercury sensing and preliminary biological screening. Pyridine-2,6-dicarboxylic acid (also known as dipicolinic acid, and abbreviated as H2DPA), 3-phenyl pyrazole (3-ppz), 4-iodo-1H-pyrazole (4-ipz), 4-nitropyrazole (4-npz), 4-bromopyrazole (4-bpz), and 4-chloropyrazole (4-cpz) were chosen as potential ligands. The synthesized complexes labelled as 1-5, namely [Cu(DPA)(3-ppz)], [Cu(DPA)(4-ipz)], [Cu(DPA)(4-npz)], [Cu(DPA)(4-bpz)], [Cu(DPA)(4-cpz)], were proposed based on spectroscopic data (FTIR, TGA, and UV-visible spectroscopy). These complexes feature C=O functionalities that are not involved in coordination and may be used for further applications. The isolated complexes were utilized for detecting Hg(II) ions in water samples. Various concentrations of Hg(II) ions were prepared for detection purposes, and changes in absorption concerning complexes 1-5 were determined using UV-Visible spectroscopy. It was found that complexes 3 and 4 exhibit efficient sensing abilities towards Hg(II) ions. The antibacterial activities of complexes 1-5 were assessed against S. typhi and E. coli. The complexes 1 and 3 displayed good antibacterial activities against S. typhi (13.67, and 13.56 mm, respectively) while complexes 1, 2 and 4 were found to be efficient against E. coli (11.6, 12.66, 11.31 mm, respectively). The absorption maxima of 2,2-diphenyl-1-picryhydrazyl (DPPH) at 517 nm, considerably shifted upon addition of complexes 1-5. The results reveal that the complexes possess potential free radical scavenging abilities.
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Affiliation(s)
- Hameed Ur Rahman
- Department of Chemistry, University of Malakand, 18800, Chakdara, Dir (Lower), Khyber, Pakhtunkhwa, Pakistan
| | - Ezzat Khan
- Department of Chemistry, University of Malakand, 18800, Chakdara, Dir (Lower), Khyber, Pakhtunkhwa, Pakistan
- Department of Chemistry, College of Science, University of Bahrain, Main Campus, 32038, Sakhir, Kingdom of Bahrain
| | - Mian Muhammad
- Department of Chemistry, University of Malakand, 18800, Chakdara, Dir (Lower), Khyber, Pakhtunkhwa, Pakistan
| | - Maaz Khan
- Department of Chemistry, University of Malakand, 18800, Chakdara, Dir (Lower), Khyber, Pakhtunkhwa, Pakistan
| | - Mashooq Ahmad Bhat
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, 11451, Riyadh, Saudi Arabia
| | - Gul Shahzada Khan
- Department of Chemistry, College of Science, University of Bahrain, Main Campus, 32038, Sakhir, Kingdom of Bahrain
| | - Nisar Ali
- Key Laboratory for Palygorskite Science and Applied Technology of Jiangsu Province, Faculty of Chemical Engineering, National and Local Joint Engineering Research Centre for Deep Utilization Technology of Rock-Salt Resource, Huaiyin Institute of Technology, 223003, Huaian, China
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Dutta D, Baishya T, Gomila RM, Frontera A, Barcelo-Oliver M, Verma AK, Bhattacharyya MK. Supramolecular Assemblies involving Energetically Significant Unconventional π(CN)-π and Anion-π(nitrile) Contacts in Zn(II) Coordination Compounds: Antiproliferative Evaluation and Theoretical Studies. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.134568] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Gul Z, Khan S, Khan E. Organic Molecules Containing N, S and O Heteroatoms as Sensors for the Detection of Hg(II) Ion; Coordination and Efficiency toward Detection. Crit Rev Anal Chem 2022:1-22. [PMID: 36122189 DOI: 10.1080/10408347.2022.2121600] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
Abstract
Rapid detection of potentially toxic heavy metals like Hg(II) has attracted great attention in the last few decades due to the importance to maintain a safe and sustainable environment for human beings. Coordination chemistry and concepts therein, play an important role in the detection of Hg(II). Size, charge, and nature of the donor atom and the respective cation (metal ion), are crucial in selective interactions between the sensor and metal ions. The sensors designed for the purpose, coordinate to Hg(II) ion through various donor sites, coordination causes a change in the electron density in organic molecules and results in either visible color change or enhancing/quenching fluorescence intensity. Since Hg(II) is soft metal, with d10 electron system, so majority of the sensors have soft donor sites which prefer to coordinate with Hg(II). Oxygen is also present in some chelating ligands which is least preferred coordination site, due to its hard nature. There are several reports of replacing other ligating sites by sulfur for enhanced mercury sensing. In some cases, desulfurization is being detected as clear change in spectral behavior during the sensing process. Efforts are still in progress to design and introduce a sensor with utmost sensitivity and selectivity. In this review, we made an attempt to explain the coordination aspects of Hg(II) detectors, reasons for poor efficiency and possible suggestions to improve the selection criterion of various compounds. It will help researchers to know about important concepts in designing more sensitive and selective sensors for detection of Hg(II) in environmental and biological samples.
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Affiliation(s)
- Zarif Gul
- Department of Chemistry, University of Okara, Punjab, Pakistan
| | - Sikandar Khan
- Department of Chemistry, University of Malakand, Chakdara 18800, Khyber Pakhtunkhwa, Pakistan
| | - Ezzat Khan
- Department of Chemistry, University of Malakand, Chakdara 18800, Khyber Pakhtunkhwa, Pakistan
- Department of Chemistry, College of Science, University of Bahrain, Zallaq 32038, Kingdom of Bahrain
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Das A, Sharma P, Gomila RM, Frontera A, Verma AK, Sarma B, Bhattacharyya MK. Synthesis, structural topologies and anticancer evaluation of phenanthroline-based 2,6-pyridinedicarboxylato Cu(II) and Ni(II) compounds. Polyhedron 2022. [DOI: 10.1016/j.poly.2021.115632] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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Dutta D, Sharma P, Gomila RM, Frontera A, Barcelo-Oliver M, Verma AK, Gogoi M, Bhattacharyya MK. Solvent driven structural topologies involving unconventional O H(methanol)⋯π contact and anti-cooperative HB⋯anion-π⋯HB assemblies with unusual enclathration of dual guest (H2O)4 cores in Mn(II) and Ni(II) coordination compounds: Antiproliferative evaluation and theoretical studies. Polyhedron 2021. [DOI: 10.1016/j.poly.2021.115503] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Ultrasound-based synthesis, SC-XRD, NMR, DFT, HSA of new Schiff bases derived from 2-aminopyridine: Experimental and theoretical studies. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2021.130105] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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Khan E. Pyridine Derivatives as Biologically Active Precursors; Organics and Selected Coordination Complexes. ChemistrySelect 2021. [DOI: 10.1002/slct.202100332] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Ezzat Khan
- Department of Chemistry University of Malakand, Chakdara 18800, Lower Dir Khyber Pakhtunkhwa Pakistan
- Department of Chemistry, College of Science University of Bahrain Sakhir 32038 Bahrain
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Mohapatra RK, Saikishore VP, Azam M, Biswal SK. Synthesis and physicochemical studies of a series of mixed-ligand transition metal complexes and their molecular docking investigations against Coronavirus main protease. OPEN CHEM 2020. [DOI: 10.1515/chem-2020-0190] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
AbstractA novel series of mixed-ligand complexes of the type, [M(L1)(L2)Cl]·2H2O [L1 = 2-(α-methyl salicylidene hydrazine) benzimidazole (primary ligand), L2 = 2,2′-bipyridine (bipy; secondary ligand), M = Co(ii), Ni(ii), Cu(ii) and Zn(ii)], were based on the physicoanalytical studies. The spectroscopic findings revealed tridentate nature of the Schiff base ligand (L1) and its coordination to the metal ions via azomethine nitrogen, ring nitrogen and the deprotonated phenolic oxygen atoms. Furthermore, the synthesized compounds were evaluated for antimicrobial activity against Bacillus subtilis, Escherichia coli and Salmonella typhi microorganisms. In addition, molecular docking studies were carried out against Middle East respiratory syndrome coronavirus (PDB ID: 4ZS6) and severe acute respiratory syndrome coronavirus 2 main protease (PDB ID: 6W63).
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Affiliation(s)
- Ranjan K. Mohapatra
- Department of Chemistry, Government College of Engineering, Keonjhar, Odisha, India
| | - V. P. Saikishore
- Department of Chemistry, Centurion University of Technology and Management, Odisha, India
| | - Mohammad Azam
- Department of Chemistry, College of Science, King Saud University, Riyadh PO BOX 2455, Riyadh 11451, Saudi Arabia
| | - Susanta K. Biswal
- Department of Chemistry, Centurion University of Technology and Management, Odisha, India
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Khan E, Khalid M, Gul Z, Shahzad A, Tahir MN, Asif HM, Asim S, Braga AAC. Molecular structure of 1,4-bis(substituted-carbonyl)benzene: A combined experimental and theoretical approach. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2019.127633] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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Ahmed A, Molvi KI, Patel HM, Ullah R, Bari A. Synthesis of novel 2, 3, 5-tri-substituted thiazoles with anti-inflammatory and antibacterial effect causing clinical pathogens. J Infect Public Health 2020; 13:472-479. [PMID: 32139293 DOI: 10.1016/j.jiph.2020.02.002] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2020] [Revised: 02/08/2020] [Accepted: 02/16/2020] [Indexed: 11/26/2022] Open
Abstract
BACKGROUND The present work is an extension of ongoing efforts toward the development and identification of new molecules as monotherapy displaying anti-inflammatory and anti-infective activities and a wide-range of gastrointestinal selectivity. A series of novel set of trisubstituted thiazole compounds (AR-17a to AR-27a) have synthesized and evaluated for their in-vitro and in-vivo anti-inflammatory activities. Synthesized trisubstituted thiazole compounds were also evaluated for their potential antibacterial activity against clinical pathogens causing infectious disease. MATERIAL AND METHOD The structures of synthesized compounds were characterized by FTIR, 1H NMR, Mass spectroscopic techniques and evaluated for their in-vitro and in-vivo anti-inflammatory effects using the human red blood cell (HRBC) membrane stabilization method and a carrageenan-induced rat paw oedema model, respectively, Diclofenac sodium and Ibuprofen were used as standard drugs. The synthesized compounds AR-17atoAR-27a screened for their in-vitro antibacterial activity against the gram-positive bacteria Staphylococcus aureus (ATCC25923) and Enterococcus faecalis (ATCC29212) and the gram-negative bacteria Escherichia coli (ATCC8739) and Pseudomonas aeruginosa (ATCC9027) using ciprofloxacin and cefdinir as standard drugs. RESULT Compounds AR-17a and AR-27a elicited maximum anti-inflammatory activity, providing 59% and 61% protection at 20mg/kg, respectively, in the inflamed paw model. Among the tested compounds, AR-17a (6.25), (54) and AR-27a (1.56), (52) had the least minimum inhibitory concentration values and the highest zone of inhibition, indicating their marked antibacterial activities. The lowest conc. were observed at 1.56, 6.25μg/mL for inhibition of bacteria by most of the compounds. CONCLUSION Novel set of trisubstituted thiazole compounds (AR-17a to AR-27a) have synthesized and characterized successfully. The preliminary screening revealed that these compounds possess promising anti-inflammatory and antibacterial activities. In addition, the objective of the study was achieved with few of the promising structures like AR-17a to AR-27a, which are prove to be potential monotherapy candidates for the treatment of chronic inflammatory diseases and bacterial infections.
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Affiliation(s)
- Aejaz Ahmed
- Department of Pharmaceutical Chemistry, Ali-Allana College of Pharmacy, Akkalkuwa, 425415, Nandurbar, Maharashtra, India.
| | - Khurshid I Molvi
- Department of Pharmaceutical Chemistry, Ali-Allana College of Pharmacy, Akkalkuwa, 425415, Nandurbar, Maharashtra, India
| | - Harun M Patel
- Department of Pharmaceutical Chemistry, R. C. Patel Institute of Pharmaceutical Education & Research, Karwand Naka, Taluka-Shirpur, Dist-Dhule, 425 405, Maharashtra, India
| | - Riaz Ullah
- Medicinal, Aromatic and Poisonous Plants Research Center (MAPRC), College of Pharmacy, King Saud University, P.O. Box. 2457, Riyadh 11451, Saudi Arabia
| | - Ahmed Bari
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, P. O. Box. 2457, Riyadh, 11451, Saudi Arabia; Research Center, College of Pharmacy, King Saud University, P.O. Box. 2457, Riyadh, 11451, Saudi Arabia
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