Synthesis and characterization of novel bis(carboxylato) dichloridobis(ethylamine)platinum(IV) complexes with higher cytotoxicity than cisplatin

Hristo Varbanov, Seied Mojtaba Valiahdi, Anton Legin, Michael Jakupec, Alexander Roller, Mathea Sophia Galanski (Corresponding author), Bernhard Keppler

Publications: Contribution to journalArticlePeer Reviewed

Abstract

A series of six novel bis(carboxylato)dichloridobis(ethylamine)platinum(IV) complexes was synthesized and characterized in detail by elemental analysis, FT-IR, ESI-MS, HPLC, multinuclear (1H, 13C, 15N, 195Pt) NMR spectroscopy and in one case by X-ray diffraction. Cytotoxic properties of the complexes were evaluated in four human tumor cell lines originating from ovarian carcinoma (CH1 and SK-OV-3), colon carcinoma (SW480) and non-small cell lung cancer (A549) by means of the MTT colorimetrical assay. In addition, their octanol/water partition coefficients (log P values) were determined. Remarkably the most active (and also most lipophilic) compounds, having 4-propyloxy-4-oxobutanoato and 4-(2-propyloxy)-4-oxobutanoato axial ligands, showed IC50 values down to the low nanomolar range.
Original languageEnglish
Pages (from-to)5456-5464
Number of pages9
JournalEuropean Journal of Medicinal Chemistry
Volume46
Issue number11
Publication statusPublished - 2011

Austrian Fields of Science 2012

  • 104003 Inorganic chemistry
  • 301305 Medical chemistry

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