A broad study of two new promising antimycobacterial drugs: Ag(I) and Au(I) complexes with 2-(2-thienyl)benzothiazole
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Data
2012-05-11
Autores
Pereira, Guilherme Alves
Massabni, Antonio Carlos [UNESP]
Castellano, Eduardo Ernesto
Sodre Costa, Luiz Antonio
Fugimura Leite, Clarice Queico [UNESP]
Pavan, Fernando Rogerio [UNESP]
Cuin, Alexandre
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Pergamon-Elsevier B.V. Ltd
Resumo
Synthesis, characterization, DFT simulation and biological assays of two new metal complexes of 2-(2-thienyl)benzothiazole - BTT are reported. The complexes [Ag(BTT)(2)NO3] - AgBTT2 and [Au(BTT)Cl]center dot 1/2H(2)O - AuBTT were obtained by mixing the ligand with silver (I) nitrate or gold(I) chloride in methanolic solution. Characterization of the complexes were based on elemental (C, H, N and S), thermal (TG-DTA) analysis, C-13 and H-1 NMR, FT-IR and UV-Vis spectroscopic measurements, as well as the X-ray structure determination for AgBTT2. Spectroscopic data predicted by DFT calculations were in agreement with the experimental data for both complexes. The ligand BTT was synthesized by the condensation of 2-thiophenecarboxaldehyde and 2-aminothiophenol in a microwave furnace. AgBTT2 has a monomeric structure. Both complexes show a good activity against Mycobacterium tuberculosis. Free BIT shows low antitubercular activity. (C) 2012 Elsevier Ltd. All rights reserved.
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Benzothiazole, Silver, Gold, Tuberculosis, Mycobacterium
Como citar
Polyhedron. Oxford: Pergamon-Elsevier B.V. Ltd, v. 38, n. 1, p. 291-296, 2012.