Chalcone-derived thiosemicarbazones and their zinc(II) and gallium(III) complexes: spectral studies and antimicrobial activity

被引:24
作者
Da Silva, Jeferson G. [1 ]
Perdigao, Camila C. H. [1 ]
Speziali, Nivaldo L. [2 ]
Beraldo, Heloisa [1 ]
机构
[1] Univ Fed Minas Gerais, Dept Quim, Belo Horizonte, MG, Brazil
[2] Univ Fed Minas Gerais, Dept Fis, BR-30161 Belo Horizonte, MG, Brazil
关键词
Chalcones; Thiosemicarbazone; Zinc(II) complexes; Gallium(III) complexes; Antimicrobial; METAL-COMPLEXES; ANTIFUNGAL ACTIVITY; CYTOTOXIC ACTIVITY; SALICYLALDEHYDE; NLO;
D O I
10.1080/00958972.2012.757762
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
Chalcone-derived 3-phenyl-1-pyridin-2-ylprop-2-en-1-one thiosemicarbazone (HPyCTPh) (1), 3-(4-chlorophenyl)-1-pyridin-2-ylprop-2-en-1-one thiosemicarbazone (HPyCT4ClPh) (2), 3-(4-bromophenyl)-1-pyridin-2-ylprop-2-en-1-one thiosemicarbazone (HPyCT4BrPh) (3), and 3-(4-nitrophenyl-1-pyridin-2-ylprop-2-en-1-one thiosemicarbazone (HPyCT4NO2Ph) (4) were obtained as well as their gallium(III) and zinc(II) complexes [Ga(PyCTPh)2]NO3 (Ga1), [Ga(PyCT4ClPh)2]NO3 (Ga2), [Ga(PyCT4BrPh)2]NO3 (Ga3), [Ga(PyCT4NO2Ph)2]NO3 (Ga4), [Zn(PyCTPh)2] (Zn1), [Zn(PyCT4ClPh)2] (Zn2), [Zn(PyCT4BrPh)2] (Zn3), and [Zn(PyCT4NO2Ph)2] (Zn4). The chalcones, thiosemicarbazones, and zinc(II) complexes were not active against Pseudomonas aeruginosa. The thiosemicarbazones proved to be more active than the parent chalcones against Staphylococcus aureus and Candida albicans. Coordination to zinc(II) resulted in activity improvement of most thiosemicarbazones against S. aureus. Coordination to gallium(III) significantly improved the antimicrobial activity of all thiosemicarbazones against the studied micro-organisms, suggesting this to be an effective strategy for antimicrobial activity enhancement.
引用
收藏
页码:385 / 401
页数:17
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