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New Mononuclear and Binuclear Cu(II), Co(II), Ni(II), and Zn(II) Thiosemicarbazone Complexes with Potential Biological Activity: Antimicrobial and Molecular Docking Study

Ahmed GaberCenter of Biomedical Sciences Research, Taif University, P.O. Box 11099, Taif 21944, Saudi ArabiaMoamen S. RefatDepartment of Chemistry, College of Science, Taif University, P.O. Box 11099, Taif 21944, Saudi ArabiaArafa BelalDepartment of Chemistry, Faculty of Science, Port Said University, Port Said 42511, EgyptIbrahim M. El‐DeenDepartment of Chemistry, Faculty of Science, Port Said University, Port Said 42511, EgyptNader HassanDepartment of Chemistry, Faculty of Science, Port Said University, Port Said 42511, EgyptRozan ZakariaDepartment of Chemistry, Faculty of Science, Port Said University, Port Said 42511, EgyptMajid AlhomraniCenter of Biomedical Sciences Research, Taif University, P.O. Box 11099, Taif 21944, Saudi ArabiaAbdulhakeem S. AlamriCenter of Biomedical Sciences Research, Taif University, P.O. Box 11099, Taif 21944, Saudi ArabiaWalaa F. AlsanieCenter of Biomedical Sciences Research, Taif University, P.O. Box 11099, Taif 21944, Saudi ArabiaEssa M. SaiedChemistry Department, Faculty of Science, Suez Canal University, P.O. Box 41522, Ismailia 42524, Egypt

2021en

ABI

Annotatsiya

Herein, we report the synthesis of eight new mononuclear and binuclear Co2+, Ni2+, Cu2+, and Zn2+ methoxy thiosemicarbazone (MTSC) complexes aiming at obtaining thiosemicarbazone complex with potent biological activity. The structure of the MTSC ligand and its metal complexes was fully characterized by elemental analysis, spectroscopic techniques (NMR, FTIR, UV-Vis), molar conductivity, thermogravimetric analysis (TG), and thermal differential analysis (DrTGA). The spectral and analytical data revealed that the obtained thiosemicarbazone-metal complexes have octahedral geometry around the metal center, except for the Zn2+-thiosemicarbazone complexes, which showed a tetrahedral geometry. The antibacterial and antifungal activities of the MTSC ligand and its (Co2+, Ni2+, Cu2+, and Zn2+) metal complexes were also investigated. Interestingly, the antibacterial activity of MTSC- metal complexes against examined bacteria was higher than that of the MTSC alone, which indicates that metal complexation improved the antibacterial activity of the parent ligand. Among different metal complexes, the MTSC- mono- and binuclear Cu2+ complexes showed significant antibacterial activity against Bacillus subtilis and Proteus vulgaris, better than that of the standard gentamycin drug. The in silico molecular docking study has revealed that the MTSC ligand could be a potential inhibitor for the oxidoreductase protein.

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Identifikatorlar

DOI: 10.3390/molecules26082288

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