Reprint of: Pt(II) pyridinium amidate (PYA) complexes: Preparation and in vitro anticancer activity studies

作者：Muller Cheyenne M A; Babak Maria V; Kubanik Mario; Hanif Muhammad; Jamieson Stephen M F; Hartinger Christian G^*; Wright L James^*

来源：Inorganica Chimica Acta, 2017, 454: 247-253.

DOI：10.1016/j.ica.2016.09.045

• Anticancer activity
• Bioorganometallic chemistry
• Pt complexes
• Pyridinium amidates

N[1-Alkylpyridin-4(1H)-ylidenelamides (PYAs), also known as pyridinium amidates, are a class of recently introduced ligands for transition metal ions. Herein we report the synthesis of the Pt(PYA) complexes [PtCl(DMSO)(HL)]Cl-2 (1), [Pt(CH3)(DMSO)(L)]Cl (2) and [Pt(CH3)(PPh3)(L)]Cl (3)(L =N-(1-benzylpyridin-4(1H)-ylidene)picolinamide). L and [HL](+) act as bidentate ligands coordinating through the pendant pyridine and either the amidate oxygen or nitrogen atoms to give the corresponding N,O or N, N linkage isomers. DFT calculations were carried out to determine the most energetically favorable isomeric forms of these compounds. For 1 the N,O coordination mode was lower in energy, while for 2 and 3 hardly any difference was found. In vitro cytotoxicity studies of [HL]Cl and 1 in human colorectal carcinoma HCT116, non-small cell lung carcinoma NCl-H460, and cervical carcinoma SiHa cells showed that both compounds are cytotoxic in the low mu range.

• 出版日期2017-1-1