Isomeric platinum organometallics derived from pyrimidine, pyridazine or pyrazine and their potential as antitumor drugs
作者:Khushwant Singh、Achintya Jana、Petra Lippmann、Ingo Ott、Neeladri Das
DOI:10.1016/j.ica.2019.04.028
日期:2019.7
Two new organometallic compounds (1 and 2) containing multiple platinum(II) centers have been synthesized. 1 and 2 are structural isomers having the same molecular formula but they are different either in terms of the N-heterocycle present in the center or relative orientation of the two pendant arms bearing the alkynyl-Pt(PEt3)(2)I units. 1 and 2 have been characterized using FTIR, NMR, HAMS and elemental analyses, besides structural characterization of one of the complex (1) using single crystal XRD. The cytotoxic potential of 1 and 2 and a previously reported di-Pt-II organometallic molecule (3) have been studied against four cancer cell lines HT-29 (colon carcinoma), MCF-7, MDA-MB-231 (breast cancer) and SK-HEP-1 (human hepatic adenocarcinoma). Comparison of IC50 values suggests that these Pt(II) based organometallic compounds have antiproliferative activity that is comparable with that of cisplatin.