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New Schiff bases with a 2,6-bis(2-aminophenylthio)pyridine moiety acting as glutathione reductase activator and inhibitors: Synthesis and molecular docking studies       
Yazarlar
Doç. Dr. Turgay TUNÇ
Kırşehir Ahi Evran Üniversitesi, Türkiye
Ahmet Bugra Ortaakarsu
Seda Muhsir Hatipoglu
Serdar Karaböcek
Türkiye
Nevin Karaböcek
Türkiye
Necmi Dege
Türkiye
Nurcan Karacan
Türkiye
Uğur Kazancı
Özet
2,6-bis(2-aminophenylthio)pyridine was synthesized and identified by x-ray diffraction method. Its new Schiffbases (H2L1, H2L2, L-3 and L-4) were synthesized and characterized by elemental analysis, FT-IR, LC-MS, H-1 NMR and C-13 NMR techniques. in vitro glutathione reductase activities of the compounds were tested on yeast and human glutathione reductase. L-4 enhanced both glutathione reductase activities, resulting in AC(50) values of 15.06 mu M and 15.89 mu M, respectively. H2L1, H2L2 and L-3 were found to be the inhibitors in the range of 50.09 - 55.23 mu M for yeast glutathione reductase, and in the range of 56.12-66.87 mu M for human glutathione reductase. According to molecular docking analysis at the xanthine binding site in human glutathione reductase (PDB: 1XAN), 2,6-bis(2-aminophenylthio)pyridine is predicted to have antimalarial property due to having a higher XP docking score than the malaria drug Chloroquine. Also, five binding pockets at the human glutathione reductase (PDB:1GRA) were identified using Sitemap analysis for Schiffbases which are non-competitive inhibitors. IFD-Docking scores were found to correlate with experimental IC50 value of H2L1, H2L2 and L-3. Based on the fact that Schiffbases have higher IFD docking scores at binding pocket-1 than at the active site, it can be predicted that Schiffbases prefer to bind to binding pocket-1 in the presence of natural substrate. The difference in glutathione reductase activities of Schiffbases was attributed to the fact that the conformation of the activator L-4-human GR complex was different from that of other inhibitor Schiffbases-human glutathione reductase complexes. ADMET calculations predicted that synthesized ligands obey the Lipinski Rule (rule of five) and Jorgensen Rule (rule of three). (C) 2022 Elsevier B.V. All rights reserved.
Anahtar Kelimeler
Schiffbases, Glutathione reductase inhibitor, Glutathione reductase activator, Molecular docking
Makale Türü Özgün Makale
Makale Alt Türü SSCI, AHCI, SCI, SCI-Exp dergilerinde yayımlanan tam makale
Dergi Adı Journal of Molecular Structure
Dergi ISSN 0022-2860
Dergi Tarandığı Indeksler SCI-Expanded
Dergi Grubu Q2
Makale Dili Türkçe
Basım Tarihi 01-2022
Doi Numarası 10.1016/j.molstruc.2021.132299
Makale Linki http://dx.doi.org/10.1016/j.molstruc.2021.132299