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Nassar DA, Ali OA, Shehata MR, Sayed AS. Spectroscopic investigation, thermal behavior, catalytic reduction, biological and computational studies of novel four transition metal complexes based on 5-methylthiophene Schiff base type. Heliyon 2023; 9:e16973. [PMID: 37332957 PMCID: PMC10272477 DOI: 10.1016/j.heliyon.2023.e16973] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Revised: 06/02/2023] [Accepted: 06/02/2023] [Indexed: 06/20/2023] Open
Abstract
Four new complexes prepared from 5-Methyl-2-carboxaldehyde-thiophene and 2,6-pyridinediamine with cobalt, nickel, copper and cadmium ions have been synthesized because of the significance of these complexes in pharmacological research and catalytic reduction. The prepared compounds were characterized using elemental analysis, mass, UV-visible, NMR and FTIR spectroscopy, as well as molar conductance, magnetic susceptibility measurements, fluorescence properties and TGA analysis. The stoichiometry mode was confirmed as 1:1 (metal: ligand) for Co, Ni and Cu complexes and 1:2 (metal: ligand) for Cd complex according to the results of the elemental and spectral studies. Furthermore, the thermal stability and luminescence properties of complexes have been studied. Thermal studies confirmed the presence of water molecules. The thermodynamic properties of the complexes were measured via the Coats-Redfern procedure. The geometric structures of the complexes were found to be octahedral around the metal ions. The optical energy gaps (Eopt) vary between 2.92 and 3.71 eV indicating that these compounds can be used as selective absorbing solar energy in photovoltaic applications. In the presence of NaBH4, the greatest reduction efficiency for the conversion of 2-NP to 2-AP was discovered to be 73-91% within 15-25 min. In vitro, high antifungal and antibacterial activity was shown by complexes than the ligand alone. The Cd(II) complex was shown to have greater activity than all of the examined microorganisms when compared to the reference drug in addition it had 4.94 μg/ml minimal inhibitory concentration against "S. aureus", "B. subtilis", and "E. coli". The bond angles, bond lengths, and quantum chemical factors of the ligand and complexes were shown in the molecular modeling using the DFT approach. The studied compounds' binding modes were confirmed using the Gaussian 09 program.
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Affiliation(s)
- Doaa A. Nassar
- Chemistry Department, Faculty of Women for Arts, Science and Education, Ain Shams University, Cairo, Egypt
| | - Omyma A.M. Ali
- Chemistry Department, Faculty of Women for Arts, Science and Education, Ain Shams University, Cairo, Egypt
| | | | - Abeer S.S. Sayed
- Chemistry Department, Faculty of Women for Arts, Science and Education, Ain Shams University, Cairo, Egypt
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2
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Effect of the substituted location on luminescent behaviors with Ambroxol moieties: synthesis, crystal structure and Hirshfeld surface. J Mol Struct 2023. [DOI: 10.1016/j.molstruc.2023.135328] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/17/2023]
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Comparative Study for Spectrofluorimetric Determination of Ambroxol Hydrochloride Using Aluminum Metal Transfer Chelation Complex and Biogenic Synthesis of Aluminum Oxide Nanoparticles Using Lavandula spica Flowers Extract. Molecules 2023; 28:molecules28052210. [PMID: 36903454 PMCID: PMC10004386 DOI: 10.3390/molecules28052210] [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: 01/28/2023] [Revised: 02/24/2023] [Accepted: 02/25/2023] [Indexed: 03/05/2023] Open
Abstract
The existing study pronounces two newly developed spectrofluorimetric probes for the assay of ambroxol hydrochloride in its authentic and commercial formulations using an aluminum chelating complex and a biogenically mediated and synthesized aluminum oxide nanoparticles (Al2O3NPs) from Lavandula spica flower extract. The first probe is based on the formation of an aluminum charge transfer complex. However, the second probe is based on the effect of the unique optical characteristics of Al2O3NPs in the enhancement of fluorescence detection. The biogenically synthesized Al2O3NPs were confirmed using various spectroscopic and microscopic investigations. The fluorescence detections in the two probes were measured at a λex of 260 and 244 and a λem of 460 and 369 nm for the two suggested probes, respectively. The findings showed that the fluorescence intensity (FI) covered linear concentration ranges of 0.1-200 ng mL-1 and 1.0-100 ng mL-1 with a regression of ˃0.999 for AMH-Al2O3NPs-SDS and AMH-Al(NO3)3-SDS, respectively. The lower detection and quantification limits were evaluated and found to be 0.04 and 0.1 ng mL-1 and 0.7 and 0.1 ng/mL-1 for the abovementioned fluorescence probes, respectively. The two suggested probes were successfully applied for the assay of ambroxol hydrochloride (AMH) with excellent percentage recoveries of 99.65% and 99.85%, respectively. Excipients such as glycerol and benzoic acid used as additives in pharmaceutical preparations, several common cations, and amino acids, as well as sugars, were all found to have no interference with the approach.
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Muleta F, Desalegn T, Demissie TB, Eswaramoorthy R, Murthy HA, Chan KY, Davids BL, Ngwira KJ. Synthesis, molecular docking, and biological studies of novel heteroleptic Cu(II) and Zn(II) complexes of natural product-based semicarbazone derivatives. J Mol Struct 2023. [DOI: 10.1016/j.molstruc.2022.134405] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Damena T, Alem MB, Zeleke D, Demissie TB, Desalegn T. Synthesis and Computational Studies of Novel Cobalt(II) and Oxovanadium(IV) Complexes of Quinoline Carbaldehyde Derivative Ligand for Antibacterial and Antioxidant Applications. J Mol Struct 2023. [DOI: 10.1016/j.molstruc.2023.134994] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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Zhang HR, Liu L, Zheng LY, Song YQ, Chen XM, Tang GM, Wang YT. The luminescent behaviors based on Ambroxol: Syntheses, crystal structure and Hirshfeld surface analysis. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.133344] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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DPPH and Nitric Oxide Free Radical Scavenging Potential of Phenyl Quinoline Derivatives and Their Transition Metal Complexes. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.134058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Zhang HR, Song YQ, Kang MH, Gong ZQ, Wang R, Tang GM, Wang YT. Tunable Ambroxol-based luminescent materials: Syntheses, crystal structure and Hirshfeld surface analysis. J SOLID STATE CHEM 2022. [DOI: 10.1016/j.jssc.2022.123308] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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9
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Damena T, Alem MB, Zeleke D, Desalegn T, Eswaramoorthy R, Demissie TB. Novel Zinc(II) and Copper(II) Complexes of 2-((2-Hydroxyethyl)amino)quinoline-3-carbaldehyde for Antibacterial and Antioxidant Activities: A Combined Experimental, DFT, and Docking Studies. ACS OMEGA 2022; 7:26336-26352. [PMID: 35936450 PMCID: PMC9352163 DOI: 10.1021/acsomega.2c02205] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Accepted: 07/07/2022] [Indexed: 05/06/2023]
Abstract
In the present work, two novel complexes of zinc(II) and copper(II) were synthesized from the ligand 2-((2-hydroxyethyl)amino)quinoline-3-carbaldehyde (H 2 L) in a 1:2 metal-to-ligand ratio in methanol. The complexes were characterized by UV-visible spectroscopy, fluorescence spectroscopy, Fourier transform infrared (FT-IR) spectroscopy, powder X-ray diffraction (XRD), scanning electron microscopy-energy-dispersive X-ray spectroscopy (SEM-EDX), mass spectrometry (MS), nuclear magnetic resonance (NMR) spectroscopy, and thermogravimetric analysis (TGA) experimental techniques and density functional theory (DFT) calculations. The spectral data revealed that the mono-deprotonated (HL) ligand acted as a bidentate ligand, which bound to both Zn(II) and Cu(II) ions via the nitrogen atom of the amine (N-H) and the hydroxyl (O-H) groups through the deprotonated oxygen atom. Formation constants and thermal analysis indicated that both metal complexes are stable up to 100 °C with thermodynamically favored chemical reactions. The Cu(II) complex showed antibacterial activities with the zones of inhibition of 20.90 ± 2.00 mm against Pseudomonas aeruginosa, 19.69 ± 0.71 mm against Staphylococcus aureus, and 18.58 ± 1.04 mm against Streptococcus pyogenes. These results are relatively higher compared with the Zn(II) complex at the same concentration. The minimum inhibitory concentration (MIC) results for the complexes also showed similar trends against the three bacteria. On the other hand, radical scavenging activities of both Cu(II) and Zn(II) complexes showed half-maximal inhibitory concentrations (IC50) of 4.72 and 8.2 μg/mL, respectively, while ascorbic acid (a positive control) has a value of 4.28 μg/mL. The Cu(II) complex exhibited better communication with the positive control, indicating its potential use for biological activities. The calculated and in silico molecular docking results also strongly support the experimental results.
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Affiliation(s)
- Tadewos Damena
- Department
of Applied Chemistry, Adama Science and
Technology University, P.O. Box 1888 Adama, Ethiopia
| | - Mamaru Bitew Alem
- Department
of Applied Chemistry, Adama Science and
Technology University, P.O. Box 1888 Adama, Ethiopia
| | - Digafie Zeleke
- Department
of Chemistry, Salale University, P.O. Box 245 Fitche, Ethiopia
| | - Tegene Desalegn
- Department
of Applied Chemistry, Adama Science and
Technology University, P.O. Box 1888 Adama, Ethiopia
| | - Rajalakshmanan Eswaramoorthy
- Department
of Biomaterials, Saveetha Dental College and Hospitals, Saveetha Institute
of Medical and Technical Sciences, Saveetha
University, Chennai 600077, India
| | - Taye B. Demissie
- Department
of Chemistry, University of Botswana, Notwane Rd, P/bag UB 00704, Gaborone, Botswana
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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: 3] [Impact Index Per Article: 1.5] [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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Ismail BA, Nassar DA, Abd El–Wahab ZH, Ali OA. Synthesis, characterization, thermal, DFT computational studies and anticancer activity of furfural-type schiff base complexes. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2020.129393] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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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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Zayed EM, Zayed MA, Hindy AM, Mohamed GG. Coordination behaviour and biological activity studies involving theoretical docking of bis-Schiff base ligand and some of its transition metal complexes. Appl Organomet Chem 2018. [DOI: 10.1002/aoc.4603] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Ehab M. Zayed
- Green Chemistry Department; National Research Centre; 33 El Bohouth str. (former El Tahrir str.), Dokki, PO 12622 Giza Egypt
| | - Mohamed A. Zayed
- Chemistry Department, Faculty of Science; Cairo University; Giza 12613 Egypt
| | - Ahmed M.M. Hindy
- Chemistry Department, Faculty of Science; Cairo University; Giza 12613 Egypt
| | - Gehad G. Mohamed
- Chemistry Department, Faculty of Science; Cairo University; Giza 12613 Egypt
- Egypt Nanotechnology Center; Cairo University; El-Sheikh Zayed 12588 6th October, Giza Egypt
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