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- Title
Synthesis, Structural Characterization and Biological Activity Evaluation of Novel Cu(II) Complexes with 3-(trifluoromethyl)phenylthiourea Derivatives.
- Authors
Drzewiecka-Antonik, Aleksandra; Struga, Marta; Głogowska, Agnieszka; Augustynowicz-Kopec, Ewa; Dobrzyńska, Katarzyna; Chrzanowska, Alicja; Wolska, Anna; Rejmak, Paweł; Klepka, Marcin T.; Wrzosek, Małgorzata; Bielenica, Anna
- Abstract
Copper complexes with 1,3-disubstituted thiourea derivatives, all containing 3-(trifluoromethyl)phenyl tail and 1-alkyl/halogen-phenyl substituent, were synthesized. The experimental spectroscopic studies and theoretical calculation revealed that two ligands coordinate to Cu(II) in a bidentate fashion via thiocarbonyl S and deprotonated N atoms of thiourea moiety. Such monomers are characteristic of alkylphenylthiourea complexes, whereas the formation of a sandwich-type dimer is observed for halogeno derivatives. For the first time, the structural identifications of CuN2S2-based complexes using experimental and theoretical X-ray absorption near edge structure are demonstrated. The dimeric halogeno derivatives showed higher antimicrobial activity in comparison with alkylphenylthiourea complexes. The Cu(II) complex of 1-(4-chloro-3-nitrophenyl)-3-[3-(trifluoromethyl)phenyl]thiourea was active against 19 strains of methicillin-resistant Staphylococci (MIC = 2 µg/mL). This derivative acted as a dual inhibitor of DNA gyrase and topoisomerase IV isolated from Staphylococcus aureus. Additionally, complexes of halogenphenylthiourea strongly inhibited the growth of mycobacteria isolated from tuberculosis patients, even fourfold stronger than the reference isoniazid. The complexes exerted weak to moderate antitumor activity (towards SW480, SW620, and PC3) being non-toxic towards normal HaCaT cells.
- Subjects
X-ray absorption near edge structure; ISONIAZID; DNA topoisomerase inhibitors; PYRAZINAMIDE; THIOUREA
- Publication
International Journal of Molecular Sciences, 2022, Vol 23, Issue 24, p15694
- ISSN
1661-6596
- Publication type
Article
- DOI
10.3390/ijms232415694