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Gavadia R, Rasgania J, Basil MV, Chauhan V, Kumar S, Jakhar K. Synthesis of Isoniazid analogs with Promising Antituberculosis Activity and Bioavailability: Biological Evaluation and Computational Studies. J Mol Struct 2023. [DOI: 10.1016/j.molstruc.2023.135325] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/12/2023]
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Zhang Y, Li G, Zhang X, Lin L. ROS-Scavenging Glyco-Nanoplatform for Synergistic Antibacteria and Wound-Healing Therapy of Bacterial Keratitis. J Mater Chem B 2022; 10:4575-4587. [DOI: 10.1039/d2tb00667g] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Infectious keratitis is a serious disease originating from a corneal trauma infected with bacteria, which is intractable to heal due to stubborn infection and persistent inflammation featured with high reactive...
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Kerbadou RM, Hadjadj Aoul R, Benmaati A, Taleb A, Hacini S, Habib Zahmani H. Identification of new biologically active synthetic molecules: comparative experimental and theoretical studies on the structure-antioxidant activity relationship of cyclic 1,3-ketoamides. J Mol Model 2021; 27:109. [PMID: 33742261 DOI: 10.1007/s00894-021-04705-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Accepted: 02/04/2021] [Indexed: 10/21/2022]
Abstract
Antioxidant agent is a chemical that prevents the oxidation of other chemical substances. Its use is the most effective means of protecting the organism by neutralizing the harmful effects of free radicals caused by oxidative stress. In the present work, a series of β-ketoamides containing a variety of monosubstituted amide groups were synthesized and tested as antioxidant agents. In order to establish a possible structure-antioxidant activity relationship, we are presenting a systematic theoretical study of these molecules with the aim of clarifying the active sites. In particular, we discuss the selectivity resulting from the choice of a free radical/antioxidant system. The theoretical study of these molecules was carried out using density functional theory (DFT) calculations at the B3LYP/6-311G (d,p) level of theory. In order to shed light on the antioxidant properties of β-ketoamides, O-H bond dissociation enthalpies (BDEs), ionization potentials (IPs), electron affinities (EAs), proton affinities (PAs), and electron transfer enthalpies (ETEs) are performed in the gas phase and in ethanol. The results obtained show that the HAT mechanism is thermodynamically more favored in the gas phase, while the SPLET is preferred in the polar solvent.
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Affiliation(s)
- Riad Mustapha Kerbadou
- Laboratoire de Chimie Fine LCF, Université Oran 1 Ahmed Ben Bella, BP-1524-Menouar, 31000, Oran, Algeria
| | - Ratiba Hadjadj Aoul
- Laboratoire de Chimie Fine LCF, Université Oran 1 Ahmed Ben Bella, BP-1524-Menouar, 31000, Oran, Algeria
| | - Aouicha Benmaati
- Laboratoire de Chimie Fine LCF, Université Oran 1 Ahmed Ben Bella, BP-1524-Menouar, 31000, Oran, Algeria.,Ecole Nationale Polytechnique d'Oran Maurice Audin, ENPO-MA, BP-1523-Menouar, 31000, Oran, Algeria
| | - Assya Taleb
- Laboratoire de Chimie Fine LCF, Université Oran 1 Ahmed Ben Bella, BP-1524-Menouar, 31000, Oran, Algeria
| | - Salih Hacini
- Laboratoire de Chimie Fine LCF, Université Oran 1 Ahmed Ben Bella, BP-1524-Menouar, 31000, Oran, Algeria
| | - Hadjira Habib Zahmani
- Laboratoire de Chimie Fine LCF, Université Oran 1 Ahmed Ben Bella, BP-1524-Menouar, 31000, Oran, Algeria.
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Synthesis and Characterization of New Fluoro/Trifluoromethyl-Substituted Acylthiourea Derivatives with Promising Activity against Planktonic and Biofilm-Embedded Microbial Cells. Processes (Basel) 2020. [DOI: 10.3390/pr8050503] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
The aim of this study was preparation of new derivatives based on 2-((4-chlorophenoxy)methyl)-N-(arylcarbamothioyl)benzamide structure; the new compounds were characterized by IR, NMR (1H, 13C) spectroscopy, and elemental analysis. The obtained compounds were evaluated for their in vitro antimicrobial activity against planktonic and biofilm-embedded microbial cells (Staphylococcus aureus, Enterococcus faecalis, Escherichia coli, Pseudomonas aeruginosa, Candida albicans), by qualitative and quantitative assays. Some of the compounds revealed promising antibacterial and antifungal activities, with low minimum inhibitory concentration values between 0.15 and 2.5 mg/mL and minimal biofilm eradication concentrations of 0.019–2.5 mg/mL. To investigate the potential target of their antibacterial activity, in silico drug-likeness and molecular docking screenings on Staphylococcus aureus DNA gyrase were performed. The compound with the best antibacterial activity (1g) was docked into topoisomerase II DNA gyrase enzymes (PDB ID: 2XCS) and showed valuable interactions with the target protein along with good docking scores, suggesting that it can act by the inhibition of DNA replication. The tested compounds exhibited only a poor antioxidant activity, as revealed by the in vitro assay using 1,1-diphenyl-2-picrylhydrazyl (DPPH) assay.
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