Synthesis and cytotoxicity of diam(m)ineplatinum(II) complexes with 2,2-bis(hydroxymethyl)malonate as the leaving group

Bioorganic & Medicinal Chemistry Letters
Yingjuan XingWei-Ping Liu

Abstract

Six diam(m)ineplatinum(II) complexes with 2,2-bis(hydroxymethyl)malonate as the leaving group were synthesized and characterized by elemental analysis, FAB-MS, FT-IR, (1)H and (13)C NMR along with a single crystal X-ray diffraction for a representative compound. All the complexes were evaluated for the cytotoxicity against human cancer cell lines A549/ATCC, HT-29, SGC-7901. The activity is related to the nature of the am(m)ine ligand. cis-[Pt(II)(1R,2R-Diaminocyclohexane)·2,2-bis(hydroxymethyl)malonate] (complex 5) exhibits the greatest activity among those six complexes, and is even more active than its parent compound oxaliplatin. LD(50) was found to be 115 mg/kg by iv administration to ICR mice, much larger than that of oxaliplatin (LD(50)=19 mg/kg).

References

Jul 13, 2007·Nature Reviews. Cancer·Lloyd Kelland

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