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- W1567192062 abstract "The syntheses of dichlorobis(cycloalkylamine)platinum(II) complexes withcis andtrans cycloalkylamine ligands [cis-PtCl2(C3H5NH2)2 tocis-PtCl2(C8H15NH2)2 (3–8) andtrans-PtCl2(C7H13NH2)2 (9) andtrans-PtCl2(C8H15NH2)2 (10)] are described. The distinction betweencis andtrans isomers was achieved by1H-NMR spectroscopy. The antitumor activity was determined on the cell proliferation of the human MDA-MB-231 breast cancer cell line during long-term drug exposure. The complexes with small cycloalkylamine ligands (3–6) were inferior, those with large cycloalkylamine ligands were comparable (7) or superior (8) to cisplatin. Surprisingly, thecis/trans isomers7/9 and8/10 were equally active. All cycloalkylamine ligands were inactive. IR-spectroscopic studies showed that the size of the cycloalkylamine ring does not lead to significant differences in the Pt-Cl binding strength. Therefore it is assumed that the markedly stronger antitumor activity of the higher homologues,7–10, is not the result of a faster reaction with bionucleophils such as DNA. A possible explanation of the high activity of7–10 is the strong lipophilicity of the complexes. This assumption was confirmed by toxicity tests against confluent cultures." @default.
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- W1567192062 date "1993-05-01" @default.
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- W1567192062 title "Dichlorobis(cycloalkylamine)platinum(II) complexes structure activity relationship on the human MDA-MB-231 breast cancer cell line" @default.
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- W1567192062 doi "https://doi.org/10.1007/bf00819526" @default.
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