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Abd El Salam HA, Moustafa G, Zayed EM, Mohamed GG. Isophthaloylbis (Azanediyl) Dipeptide Ligand and Its Complexes: Structural Study, Spectroscopic, Molecular Orbital, Molecular Docking, and Biological Activity Properties. Polycycl Aromat Compd 2022. [DOI: 10.1080/10406638.2022.2097712] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
Affiliation(s)
| | - Gaber Moustafa
- Peptides Chemistry Department, National Research Centre, Dokki, Giza, Egypt
| | - Ehab M. Zayed
- Green Chemistry Department, National, Research Centre, Dokki, Giza, Egypt
| | - Gehad G. Mohamed
- Chemistry Department, Faculty of Science, Cairo University, Giza, Egypt
- Nanoscience Department, Basic and Applied Sciences Institute, Egypt-Japan University of Science and Technology, Alexandria, Egypt
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A new quinolinone-chalcone hybrid with potential antibacterial and herbicidal properties using in silico approaches. J Mol Model 2022; 28:176. [PMID: 35652956 DOI: 10.1007/s00894-022-05140-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Accepted: 04/25/2022] [Indexed: 01/28/2023]
Abstract
Quinolinone-chalcones are hybrid compounds consisting of chalcone and quinolone moieties with biological activity related to their hybrid structure. This work seeks to describe the structural and theoretical parameters related to the physicochemical properties and biological activity of a new quinolinone-chalcone. The synthesis, structural characterization by X-ray diffraction, molecular topology by Hirshfeld surfaces and QTAIM, molecular electronic calculations, and pharmacophore analysis were described. The weak interactions C-H…O, C-H…π, and C-H…Br were responsible for crystal growth and stabilized the crystalline state. The DFT analysis shows that the sulfonamide group region is susceptible to observed interactions, and the frontier molecular orbitals indicate high kinetic stability. Also, pharmacophore analysis revealed potential antibacterial and herbicidal activity; by docking within the active site of TtgR, a transcription regulator for the efflux pump TtgABC from the highly resistant Pseudomonas putida (P. putida) strain DOT-TIE, we showed that the activation of TtgR relies upon the binding of aromatic-harboring compounds, which plays a crucial role in bacterial evasion. In this context, a new quinolinone-chalcone has a higher binding affinity than tetracycline, which suggests it might be a better effector for TtgR.
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Moustafa G, Sabry E, Zayed EM, Mohamed GG. Structural characterization, spectroscopic studies, and molecular docking studies on metal complexes of new hexadentate cyclic peptide ligand. Appl Organomet Chem 2021. [DOI: 10.1002/aoc.6515] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Gaber Moustafa
- Peptides Chemistry Department National Research Centre Giza Egypt
| | - Eman Sabry
- Pesticide Chemistry Department National Research Centre Giza Egypt
| | - Ehab M. Zayed
- Green Chemistry Department National Research Centre Giza Egypt
| | - Gehad G. Mohamed
- Chemistry Department, Faculty of Science Cairo University Giza Egypt
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Effect of ortho- and para-chlorine substitution on hydroxychlorochalcone. J Mol Model 2021; 27:65. [PMID: 33532877 DOI: 10.1007/s00894-021-04670-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2020] [Accepted: 01/12/2021] [Indexed: 10/22/2022]
Abstract
This work describes a comparative molecular structure of two hydroxychlorochalcones with an emphasis on their planarity. Hirshfeld surface analysis investigates the effect of ortho- and para-chlorine substitution on supramolecular arrangement and physical chemical properties. The molecular conformation of 2'-hydroxy-4',6'-dimethyl-2-chlorochalcone and 2'-hydroxy-4',6'-dimethyl-4-chlorochalcone chalcones was obtained through DFT with the exchange-correlation functional M06-2X and the 6-311++G(2d,2p) basis set, and the results were compared with the experimental X-ray data in order to get insights on the effect of ortho- and para-chlorine substitution. The charge transfer into entire main carbon chain was also investigated using frontier molecular orbitals (HOMO and LUMO), NBO, and MEP map in order to describe the comparative conformational stability due to the resonance effect produced by π electron displacements. Finally, the intermolecular observed interactions were analyzed by QTAIM, with the M06-2X/6-311G++(d,p) theory level.
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Vaz WF, Michelini LJ, Oliveira GAR, Lião LM, Perez CN, Oliver AG, Napolitano HB. Structural comparison of five new halogenated dihydroquinoline-4(1 H)-ones. J Mol Struct 2020; 1219:128559. [PMID: 32536721 PMCID: PMC7264041 DOI: 10.1016/j.molstruc.2020.128559] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2020] [Revised: 05/16/2020] [Accepted: 05/28/2020] [Indexed: 11/28/2022]
Abstract
Compounds with dihydroquinoline-4(1H)-one nuclei have been reported in the literature for being important in the development of medicines due to their broad spectrum of activities. In this way, the structural knowledge of this class becomes relevant for obtaining new materials with desired biological properties. This study presents the structural elucidation of five halogenated dihydroquinolines, as well as the discussion about the effect on the molecular conformation of the type and position of halogen atom on aromatic rings. Compounds I and IV differ in halogen substitution on 2-phenyl ring, while compounds III and V differ in halogen substitution on the benzylidene ring. Moreover, compound II has a para-substituted 2-phenyl ring in their molecular structure. The crystal packing of all five molecules is mainly ruled by C–H⋯O and C–H···halogen interactions that form dimers and chains. The shift in position and the kind of the halogen in ring C shows a starring role in the conformation of the studied compounds, and the packaging of these compounds is more susceptible to variations when the halogen position changes. Five dihydroquinoline-4(1H)-ones have been synthesized by varying the halogenated substituents. Different substituents lead to distinct number of molecules at asymmetric unit. The Molecular packing is stabilized by C–H⋯O and C–H···Halogen hydrogen bonds. The change in position and the halogen atom attached in ring C play a significant role in the conformation.
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Affiliation(s)
- Wesley F Vaz
- Ciências Exatas e Tecnológicas, Universidade Estadual de Goiás, Anápolis, GO, 75001-970, Brazil.,Instituto Federal de Educação, Ciência e Tecnologia de Mato Grosso, Lucas do Rio Verde, MT, 78455-000, Brazil
| | - Lidiane J Michelini
- Instituto de Química, Universidade Federal de Goiás, Goiânia, GO, 74690-900, Brazil
| | - Gerlon A R Oliveira
- Instituto de Química, Universidade Federal de Goiás, Goiânia, GO, 74690-900, Brazil
| | - Luciano M Lião
- Instituto de Química, Universidade Federal de Goiás, Goiânia, GO, 74690-900, Brazil
| | - Caridad N Perez
- Instituto de Química, Universidade Federal de Goiás, Goiânia, GO, 74690-900, Brazil
| | - Allen G Oliver
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, IN, 46556, USA
| | - Hamilton B Napolitano
- Ciências Exatas e Tecnológicas, Universidade Estadual de Goiás, Anápolis, GO, 75001-970, Brazil.,Laboratório de Novos Materiais, Centro Universitário de Anápolis, Anápolis, GO, 75083-515, Brazil
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6
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Machine learning prediction of the potential pesticide applicability of three dihydroquinoline derivatives: Syntheses, crystal structures and physical properties. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2020.127732] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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