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Fandzloch, Marzena; Augustyniak, Adam W.; Dobrzańska, Liliana; Jędrzejewski, Tomasz; Sitkowski, Jerzy; Wypij, Magdalena; Golińska, Patrycja
Journal of inorganic biochemistry, September 2020, 2020-09-00, 20200901, Letnik: 210Journal Article
Five novel rhodium(II) complexes of general formula Rh2(μ-OOCCH3)4L2, where L is a triazolopyrimidine derivative, in particular dimethyl-1,2,4-triazolo1,5-apyrimidine (dmtp) for (1), 5,7-diethyl-1,2,4-triazolo1,5-apyrimidine (detp) for (2), 7-isobutyl-5-methyl-1,2,4-triazolo1,5-apyrimidine (ibmtp) for (3), 7-hydroxy-5-methyl-1,2,4-triazolo1,5-apyrimidine (HmtpO) for (4) and 5,7-ditertbutyl-1,2,4-triazolo1,5-apyrimidine (dbtp) for (5) are reported. These first representatives of paddle-wheel dirhodium complexes with triazolopyrimidines have been characterized by IR and NMR spectroscopy as well as by single-crystal X-ray diffraction studies. Three of the new complexes (1), (2) and (5) were thoroughly screened in vitro for their cytotoxicity against human breast cancer cell line MCF-7 and L929 murine fibroblast cells. Favorably, they show significantly less effective inhibition on the cell growth of L929 than cisplatin under identical conditions. Complexes (1) and (5) display moderate cytotoxic activity (IC50 = 16.3–21.5 μM) against MCF-7 cells which is induced via reactive oxygen species-independent pathways. Extensive studies of rhodium complexes (1), (2) and (5) against microorganisms have shown that the tested compounds exhibit antibacterial activity against Gram-positive bacteria (Staphylococcus aureus and Bacillus subtilis) while (5) significantly inhibited the growth of Malassezia furfur. The highest antibacterial, and antifungal activity, was observed for (5). The first representatives of paddle-wheel dirhodium complexes with triazolopyrimidines of general formula Rh2(μ-OOCCH3)4L2, where L = triazolopyrimidine derivatives, were synthesized and structurally characterized. The potential of their biological use has been determined by assays including anticancer activity against MCF-7 cancer cells, toxicity on normal L929 cells, antibacterial and antifungal activity. Display omitted •First representatives of paddle-wheel dirhodium complexes with triazolopyrimidines.•In vitro activity against human breast cancer cells MCF-7 and L929 murine fibroblasts.•Cytotoxicity on MCF-7 cells induced via reactive oxygen species-independent pathways.•Antibacterial activity against Staphylococcus aureus and Bacillus subtilis.•Antifungal activity against Malassezia furfur.
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