Palladium(II) carbohydrate complexes of alkyl, aryl and ferrocenyl esters and their cytotoxic activities
作者:Sadanala Bhavya Deepthi、Rajiv Trivedi、Lingamallu Giribabu、Pombala Sujitha、C. Ganesh Kumar
DOI:10.1016/j.ica.2014.03.018
日期:2014.5
This article describes the synthesis and cytotoxic activities of palladium(II) carbohydrate complexes of methyl, phenyl and ferrocenyl ester derivatives. The 3-O-ferrocenoyl-1,2-O-isopropylidene-alpha-D-xylofuranose triazole (2c) was prepared by the Huisgen 1,3-dipolar cycloaddition reaction of 2-ethynyl pyridine and 5-azido-5-deoxy-3-O-ferrocenoyl-1,2-O-isopropylidene-alpha-D-xylofuranose (1c). The reaction of this conjugate with [Pd(COD)Cl-2] in anhydrous dichloromethane formed the corresponding palladium(II) complex (3c). The ligands and the complexes were characterised by H-1 NMR, ESI mass, IR and elemental analysis. The UV-Vis and CV studies were also performed for the metal complexes. The electronic absorption spectra of complexes 3a-c shows the presence of both triazole and ferrocene absorption bands. Electrochemical studies of complexes 3a-c show the presence of a reduction peak at around -0.84 V thereby indicating the conversion of Pd(II) to Pd(0). The in vitro cytotoxic activity was studied against a panel of four different cancer cell lines. It was observed that these compounds exhibited significant cytotoxicity specifically on A549 cancer cell line. (C) 2014 Elsevier B.V. All rights reserved.