Synthesis and Characterization of New Palladium(II) Thiosemicarbazone Complexes and Their Cytotoxic Activity against Various Human Tumor Cell Lines
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The palladium(II) bis-chelate complexes of the type [Pd(TSC1-5)2] (6–10), with their corresponding ligands 4-phenyl-1-(acetone)-thiosemicarbazone, HTSC1 (1), 4-phenyl-1-(2'-chloro-benzaldehyde)-thiosemicarbazone, HTSC2 (2), 4-phenyl-1-(3'-hydroxy-benzaldehyde)-thiosemicarbazone, HTSC3 (3), 4-phenyl-1-(2'-naphthaldehyde)-thiosemicarbazone, HTSC4 (4), and 4-phenyl-1-(1'-nitro-2'-naphthaldehyde)-thiosemicarbazone, HTSC5 (5), were synthesized and characterized by elemental analysis and spectroscopic techniques (IR and 1H- and 13C-NMR). The molecular structure of HTSC3, HTSC4, and [Pd(TSC1)2] (6) have been determined by single crystal X-ray crystallography. Complex 6 shows a square planar geometry with two deprotonated ligands coordinated to through the azomethine nitrogen and thione sulfur atoms in a cis arrangement. The in vitro cytotoxic activity measurements indicate that the palladium(II) complexes (–9.87¿M) exhibited higher antiproliferative activity than their free ligands (–70.86 and >250¿M) against different types of human tumor cell lines. Among all the studied palladium(II) complexes, the [Pd(TSC3)2] (8) complex exhibited high antitumor activity on the DU145 prostate carcinoma and K562 chronic myelogenous leukemia cells, with low values of the inhibitory concentration (0.01 and 0.02¿M, resp.).
How to citeHernández Gorritti, W., Paz Castillo-Berríos, J., Carrasco, F., Vaisberg, A., Spodine, E., Manzur, J., ...y Beyer, L. (2013). Synthesis and characterization of new palladium (ii) thiosemicarbazone complexes and their cytotoxic activity against various human tumor cell lines. Bioinorganic Chemistry and Applications, 2013, 12 p. Recuperado de https://www.hindawi.com/journals/bca/2013/524701/
PublisherHindawi Publishing Corporation
JournalBioinorganic Chemistry and Applications
Indexado en Scopus