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Spectroscopic characterization, DFT modeling and antimicrobial studies of some novel nanoparticles mixed ligand complexes of NS bidentate ligand in presence of 2,2′-bipyridine. J Mol Liq 2023. [DOI: 10.1016/j.molliq.2023.121404] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/17/2023]
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Salem AE, Mohammed SF, Sadeek SA, Zordok WA, S. El‐Attar M. Synthesis, structural elucidation, molecular modeling and antimicrobial studies of some nanoparticles mixed ligands complexes of cetirizine in presence of 2,2′‐bipyridine. Appl Organomet Chem 2022. [DOI: 10.1002/aoc.6715] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Ahmed E. Salem
- Department of Chemistry, The Egyptian mineral resources authority (EMRA) Cairo Egypt
| | - Soha F. Mohammed
- Department of Chemistry, Faculty of Science Zagazig University Zagazig Egypt
| | - Sadeek A. Sadeek
- Department of Chemistry, Faculty of Science Zagazig University Zagazig Egypt
| | - Wael A. Zordok
- Department of Chemistry, Faculty of Science Zagazig University Zagazig Egypt
| | - Mohamed S. El‐Attar
- Department of Chemistry, Faculty of Science Zagazig University Zagazig Egypt
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Elshafie HS, Sadeek SA, Camele I, Mohamed AA. Biochemical Characterization of New Gemifloxacin Schiff Base (GMFX-o-phdn) Metal Complexes and Evaluation of Their Antimicrobial Activity against Some Phyto- or Human Pathogens. Int J Mol Sci 2022; 23:2110. [PMID: 35216223 PMCID: PMC8877648 DOI: 10.3390/ijms23042110] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2021] [Revised: 02/07/2022] [Accepted: 02/11/2022] [Indexed: 02/06/2023] Open
Abstract
Four novel ligand-metal complexes were synthesized through the reaction of Fe(III), pleaseCo(II), Zn(II), and Zr(IV) with Schiff base gemifloxacin reacted with ortho-phenylenediamine (GMFX-o-phdn) to investigate their biological activities. Elemental analysis, FT-IR, 1H NMR, UV-visible, molar conductance, melting points, magnetic susceptibility, and thermal analyses have been carried out for insuring the chelation process. The antimicrobial activity was carried out against Monilinia fructicola, Aspergillus flavus, Penicillium italicum, Botrytis cinerea, Escherichia coli, Bacillus cereus, Pseudomonas fluorescens, and P. aeruginosa. The radical scavenging activity (RSA%) was in vitro evaluated using ABTS method. FT-IR spectra indicated that GMFX-o-phdn chelated with metal ions as a tetradentate through oxygen of carboxylate group and nitrogen of azomethine group. The data of infrared, 1H NMR, and molar conductivity indicate that GMFX-o-phdn reacted as neutral tetra dentate ligand (N2O2) with metal ions through the two oxygen atoms of the carboxylic group (oxygen containing negative charge) and two nitrogen atoms of azomethine group (each nitrogen containing a lone pair of electrons) (the absent of peak corresponding to ν(COOH) at 1715 cm-1, the shift of azomethine group peak from 1633 cm-1 to around 1570 cm-1, the signal at 11 ppm of COOH and the presence of the chloride ions outside the complex sphere). Thermal analyses (TG-DTG/DTA) exhibited that the decaying of the metal complexes exists in three steps with the final residue metal oxide. The obtained data from DTA curves reflect that the degradation processes were exothermic or endothermic. Results showed that some of the studied complexes exhibited promising antifungal activity against most of the tested fungal pathogens, whereas they showed higher antibacterial activity against E. coli and B. cereus and low activity against P. fluorescens and P. aeruginosa. In addition, GMFX-o-phdn and its metal complexes showed strong antioxidant effect. In particular, the parent ligand and Fe(III) complex showed greater antioxidant capacity at low tested concentrations than that of other metal complexes where their IC50 were 169.7 and 164.6 µg/mL, respectively.
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Affiliation(s)
- Hazem S. Elshafie
- School of Agricultural, Forestry, Food and Environmental Sciences, University of Basilicata, 85100 Potenza, Italy;
| | - Sadeek A. Sadeek
- Department of Chemistry, Faculty of Science, Zagazig University, Zagazig 44519, Egypt;
| | - Ippolito Camele
- School of Agricultural, Forestry, Food and Environmental Sciences, University of Basilicata, 85100 Potenza, Italy;
| | - Amira A. Mohamed
- Department of Basic Science, Zagazig Higher Institute of Engineering and Technology, Zagazig 44519, Egypt;
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Meloxicam and Study of Their Antimicrobial Effects against Phyto- and Human Pathogens. Molecules 2021; 26:molecules26051480. [PMID: 33803210 PMCID: PMC7963159 DOI: 10.3390/molecules26051480] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2021] [Revised: 03/01/2021] [Accepted: 03/05/2021] [Indexed: 11/16/2022] Open
Abstract
Recently, the design of new biological metal-ligand complexes has gained a special interest all over the world. In this research, new series of mixed ligand complexes from meloxicam (H2mel) and glycine (Gly) were synthesized. Structures of the compounds were investigated employing elemental analyses, infrared, electronic absorption, 1H NMR, thermal analyses, effective magnetic moment and conductivity. The estimated molar conductivity of the compounds in 1 × 10-3 M DMF solution indicates the non-electrolyte existence of the examined complexes. Additionally, the effective magnetic moment values refer to the complexes found as octahedral molecular geometry. The data of the infrared spectra showed the chelation of H2mel and Gly with metal ions from amide oxygen and nitrogen of the thyizol groups of H2mel and through nitrogen of the amide group and oxygen of the carboxylic group for Gly. Thermal analyses indicated that the new complexes have good thermal stability and initially lose hydration water molecules followed by coordinated water molecules, Gly and H2mel. The kinetic parameters were calculated graphically using Coats-Redfern and Horowitz-Metzeger methods at n = 1 and n ≠ 1. The density functional theory (DFT) calculations were performed at B3LYP levels. The optimized geometry of the ligand and its complexes were obtained based on the optimized structures. The data indicated that the complexes are soft with η value in the range 0.114 to 0.086, while η = 0.140 for free H2mel. The new prepared complexes were investigated as antibacterial and antifungal agents against some phyto- and human pathogens and the minimum inhibitory concentration (MIC) data showed that complex (A) has the lowest MIC for Listeria and E. coli (10.8 µg/mL).
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Huang M, Xiang W, Zhou T, Mao J, Wu X, Guo X. The critical role of the surface iron-oxalate complexing species in determining photochemical degradation of norfloxacin using different iron oxides. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 697:134220. [PMID: 32380635 DOI: 10.1016/j.scitotenv.2019.134220] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2019] [Revised: 08/30/2019] [Accepted: 08/30/2019] [Indexed: 06/11/2023]
Abstract
In the past decades, in-situ generation of reactive oxygen species (ROS) in the photochemical iron oxides/oxalate system (UV/IOs/Ox) has drawn a lot of attentions, while understanding the reaction mechanism upon the solid-liquid surface complexing behaviors/species is still scarcely. In this study, comparative degradation of norfloxacin (NOR) was investigated in the UV/IOs/Ox systems adopting four different common iron oxides. It was found that the type of IOs would lead to rather different NOR degradation patterns following the order of goethite (α-FeOOH) > hematite (α-Fe2O3) > maghemite (γ-Fe2O3) ≈ magnetite (Fe3O4). •OH was the main ROS and effects of parameters (dosage of IOs, NOR and Ox, pH) on the pseudo-first-order kobs(NOR) were evaluated in the four systems. Results showed that the surface structures of IOs instead of catalyst amounts would be more responsible for the degradation efficiency. Evolutions of •OH, H2O2 and Fe2+ indicated the surface interfacial reactions would also contribute for the NOR degradation, but depended on the type of IOs. ATR-FTIR examinations demonstrated that catalytic activity of IOs correlated highly (R2 = 0.999) with the amounts of bidentate mononuclear iron-Ox surface complex but correlated poorly with the amounts of monodentate mononuclear and outer sphere complexes. Different intrinsic properties of IOs such as the species of surface hydroxyl groups (-OH) would result in changing the proportion of the three surface complexes. Besides, the minor reduction transformation of NOR by the carbon dioxide anion radical (CO2•-) was verified by density function theory (DFT) calculation, further confirmed the involvement of both •OH and CO2•- for NOR degradation.
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Affiliation(s)
- Mingjie Huang
- School of Environmental Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, PR China
| | - Wei Xiang
- School of Environmental Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, PR China; Key Laboratory of Water and Wastewater Treatment (HUST), MOHURD, Wuhan 430074, PR China
| | - Tao Zhou
- School of Environmental Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, PR China.
| | - Juan Mao
- School of Environmental Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, PR China; Key Laboratory of Water and Wastewater Treatment (HUST), MOHURD, Wuhan 430074, PR China
| | - Xiaohui Wu
- School of Environmental Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, PR China; Key Laboratory of Water and Wastewater Treatment (HUST), MOHURD, Wuhan 430074, PR China.
| | - Xin Guo
- State Key Laboratory of Coal Combustion, Huazhong University of Science and Technology, Wuhan 430074, PR China
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Fluoroquinolones: A micro-species equilibrium in the protonation of amphoteric compounds. Eur J Pharm Sci 2016; 93:380-91. [DOI: 10.1016/j.ejps.2016.08.053] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2016] [Revised: 08/27/2016] [Accepted: 08/28/2016] [Indexed: 01/15/2023]
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Sadeek SA, Abd El-Hamid SM, El-Aasser MM. Synthesis, characterization, antimicrobial and cytotoxicity studies of some transition metal complexes with gemifloxacin. MONATSHEFTE FUR CHEMIE 2015. [DOI: 10.1007/s00706-015-1507-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Soayed AA, Refaat HM, Noor El-Din DA. Characterization and biological activity of Pefloxacin–imidazole mixed ligands complexes. Inorganica Chim Acta 2014. [DOI: 10.1016/j.ica.2014.05.020] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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9
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Soayed AA, Refaat HM, Noor El-Din DA. Metal complexes of moxifloxacin–imidazole mixed ligands: Characterization and biological studies. Inorganica Chim Acta 2013. [DOI: 10.1016/j.ica.2013.04.040] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Holstein JJ, Hübschle CB, Dittrich B. Electrostatic properties of nine fluoroquinoloneantibiotics derived directly from their crystal structure refinements. CrystEngComm 2012. [DOI: 10.1039/c1ce05966a] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Sadeek SA, El-Shwiniy WH, El-Attar MS. Synthesis, characterization and antimicrobial investigation of some moxifloxacin metal complexes. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2011; 84:99-110. [PMID: 21968206 DOI: 10.1016/j.saa.2011.09.010] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2011] [Revised: 09/05/2011] [Accepted: 09/07/2011] [Indexed: 05/31/2023]
Abstract
The new complexes of moxifloxacin (MOX), with Ti(IV), Y(III), Pd(II) and Ce(IV) have been synthesized. These complexes were then characterized by melting point, magnetic studies and spectroscopic techniques involving infrared spectra (IR), UV-Vis, (1)H NMR. C, H, N and halogen elemental analysis and thermal behavior of complexes also investigated. The results suggested that the molar ratio for all complexes is M: MOX=1:2 where moxifloxacin acts as a bidentate via one of the oxygen atoms of the carboxylate group and through the ring carbonyl group and the complexes have the following formula [Ti(MOX)(2)](SO(4))(2)·7H(2)O, [Y(MOX)(2)Cl(2)]Cl·12H(2)O, [Pd(MOX)(2)(H(2)O)(2)]Cl(2)·6H(2)O and [Ce(MOX)(2)](SO(4))(2)·2H(2)O. The activation energies, E*, enthalpies, ΔH*, entropies, ΔS* and Gibbs free energies, ΔG*, of the thermal decomposition reactions have been derived from thermogravimetric (TGA) and differential thermogravimetric (DrTG) curves, using Coats-Redfern (CR) and Horowitz-Metzger (HM) methods. The antimicrobial activity of these complexes has been evaluated against three Gram-positive and three Gram-negative bacteria and compared with the reference drug moxifloxacin. The antibacterial activity of Ti(IV) complex is significant for E. coli K32 and highly significant for S. aureus K1, B. subtilis K22, Br. otitidis K76, P. aeruginosa SW1 and K. oxytoca K42 compared with free moxifloxacin.
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Affiliation(s)
- Sadeek A Sadeek
- Department of Chemistry, Faculty of Science, Zagazig University, Zagazig, Egypt.
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Spectroscopic studies, thermal analyses and biological evaluation of new V(IV), Zr(IV) and U(VI) moxifloxacin complexes. J Mol Struct 2011. [DOI: 10.1016/j.molstruc.2011.09.009] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Sadeek SA, El-Shwiniy WH. Preparation, structure and microbial evaluation of metal complexes of the second generation quinolone antibacterial drug lomefloxacin. J Mol Struct 2010. [DOI: 10.1016/j.molstruc.2010.07.041] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Schmidt B, Schumacher-Buffel R, Thiede B, Schäffer A. Synthesis of [1-15N,2-13C]-labeled difloxacin. MONATSHEFTE FUR CHEMIE 2009. [DOI: 10.1007/s00706-009-0158-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Li YX, Chen ZF, Xiong RG, Xue Z, Ju HX, You XZ. A mononuclear complex of norfloxacin with silver(I) and its properties. INORG CHEM COMMUN 2003. [DOI: 10.1016/s1387-7003(03)00115-1] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Chen ZF, Li BQ, Xie YR, Xiong RG, You XZ, Feng XL. Synthesis, crystal structure, and characterization of mixed-ligand complex of copper(I) with drug of norfloxacin and triphenyl phosphine: [Cu(PPh3)2(H-Norf)]ClO4. INORG CHEM COMMUN 2001. [DOI: 10.1016/s1387-7003(01)00207-6] [Citation(s) in RCA: 39] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Wallis SC, Gahan LR, Charles BG, Hambley TW, Duckworth PA. Copper(II) complexes of the fluoroquinolone antimicrobial ciprofloxacin. Synthesis, X-ray structural characterization, and potentiometric study. J Inorg Biochem 1996; 62:1-16. [PMID: 8936419 DOI: 10.1016/0162-0134(95)00082-8] [Citation(s) in RCA: 93] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Reaction of the fluoroquinolone antimicrobial ciprofloxacin with copper(II) nitrate in the presence of 2,2'-bipyridine resulted in the isolation of the complex [Cu(cip)(bipy) (Cl)0.7(NO3)0.3] (NO3).2H2O. Reaction of an aqueous solution of ciprofloxacin.HCl and NaCl with CuCl2 at pH 5.0 resulted in the isolation of [Cu(cip)2]Cl2.11H2O. The complex [Cu(cip) (bipy)(Cl)0.7(NO3)0.3] (NO3).2H2O crystallizes in the monoclinic space group P2(1)/n, with a = 13.955(8), b = 14.280(8), c = 14.192(6) A, beta = 93.10(4) degrees, Z = 4 with R = 0.046. The selective broadening of resonances in the 13C NMR spectrum of ciprofloxacin by the addition of Cu2+(aq) was employed to probe metal ion binding sites in the ligand. The protonation constants of norfloxacin and ciprofloxacin, and the formation constants with copper(II), were determined by potentiometric titrations at 25 degrees C. The additions of ciprofloxacin to metal to form ML and ML2 complexes exhibit stepwise formation constants of log K1 6.2(1) and log K2 11.1(3), respectively.
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Affiliation(s)
- S C Wallis
- Department of Chemistry, University of Queensland, Brisbane, Australia
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