The synthesis and characterization of a series of picoplatin-based (picoplatin = [PtCl2(mpy)(NH3)], mpy = 2-methylpyridine), Pt(IV) complexes with axialcarboxylatoligands of increasing length are reported. The synthesis is based on the oxidation with hydrogen peroxide of picoplatin to give the cis,cis,trans-[PtCl2(mpy)(NH3)(OH)2] intermediate and then its transformation into the dicarboxylato complexes
Picoplatin-based complexes with the bioactive orotate and 5-fluoroorotate ligands: Synthesis, DFT calculations, structure, spectroscopic characterization and in vitro cytotoxicity
the DFT calculations with the PBE0 and B3LYP methods have revealed that the other isomer (B) with the intramolecular N H⋅⋅⋅O hydrogen bond is more stable than A, in the gas phase. It is concluded that during the synthesis the steric and kinetic effects of the 2-picoline ligand play the dominant role, therefore, the isomer A is formed. The antiproliferative activity of 1, 2 and 5-fluoroorotic acid (3)
An unexpected in-solution instability of diiodido analogue of picoplatin complicates its biological characterization
作者:Pavel Štarha、Bohuslav Drahoš、Radovan Herchel
DOI:10.1039/d1dt00740h
日期:——
Complex cis-[PtI2(NH3)(pic)] (pic = 2-methylpyridine), an iodido analogue of picoplatin, released the N-donor pic ligand in solution and isomerized, which complicates its subsequent testing for cytotoxicity.
Conjugation of a Pt(iv) pro-drug derivative of picoplatin to a tetrameric RGD-containing peptide leads to selective accumulation and antitumor activity in cancer cells overexpressing αVβ3 and αVβ5 integrins.