Abstract
A series of water soluble platinum(II) complexes of general formulae [Pt(en)(L)][NO3]2, [Pt(NH3)2(L)][NO3]2 [en=ethylenediamine; L=dmpzC6H4Se(CH2)nCOOH or dmpzCH2CH2Se(CH2)nCOOH (n=1 and 2)], [Pt(en)(L)][NO3][OH]·H2O [L=dmpzCH2CH2Se(CH2)nCOOH (n=1 and 2)] and [Pt(dmpzCH2CH2SeCH2CH2COOH)2][Cl]2·2H2O have been synthesized. They were characterized by microanalyses, IR, NMR (1H, 13C{1H}, 77Se{1H} and 195Pt{1H}) spectroscopy. Molecular structures of [Pt(en)(dmpzCH2CH2SeCH2COOH)][NO3][OH]·H2O and [Pt(dmpzCH2CH2SeCH2CH2COOH)2][Cl]2·2H2O were determined unambiguously by single crystal X-ray diffraction analyses. The cytotoxicity of these complexes has been evaluated against human colon (HT29, Colo205), ovarian (A2780) and bladder (T24) cancer cell lines and compared with the activity of cisplatin and adriamycin.
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