title: Diethanolamine Pd(II) complexes in bioorganic modeling as model systems of metallopeptidases and soybean lipoxygenase inhibitors.
abstract: The reaction of PdCl(2) with diethanolammonium chloride (DEAxHCl), in the molar ratio 1:2, affords the [HDEA](2)[PdCl(4)] complex (1). The hydrolytic activity of the novel Pd(II) complex 1 was tested in reaction with N-acetylated L-histidylglycine dipeptide (AcHis-Gly). Complex 1, as well as earlier prepared trans-[PdCl(2)(DEA)(2)] complex (2), and DEA, as their precursor, were tested for their in vitro free radical scavenging activity. UV absorbance-based enzyme assays were done in order to evaluate their inhibitory activity of soybean lipoxygenase (LOX). Also, assays with superoxide anion radical were done. The scavenging activities of the complexes were measured and compared with those of their precursors and caffeic acid. Complex 2 exhibits the highest antioxidant activity and the highest inhibitory effect against the soybean LOX.
authors.affiliation: Department of Chemistry, Faculty of Science, University of Kragujevac, R. Domanovića 12, 34000 Kragujevac, Serbia. zorica@kg.ac.rs
authors.forename: Zorica D
authors.initials: ZD
authors.lastname: Petrović
authors.forename: Dimitra
authors.initials: D
authors.lastname: Hadjipavlou-Litina
authors.forename: Eleni
authors.initials: E
authors.lastname: Pontiki
authors.forename: Dusica
authors.initials: D
authors.lastname: Simijonović
authors.forename: Vladimir P
authors.initials: VP
authors.lastname: Petrović
mesh_terms: D004983:Ethanolamines / Q000737:chemistry*; D016859:Lipoxygenase Inhibitors / Q000737:chemistry*; D045726:Metalloproteases / Q000737:chemistry*; D008958:Models, Molecular; D010165:Palladium / Q000737:chemistry*; D010455:Peptides / Q000737:chemistry*; D013025:Glycine max / Q000737:chemistry*
chemical_list: D004983:Ethanolamines; D016859:Lipoxygenase Inhibitors; D010455:Peptides; D010165:Palladium; C020283:diethanolamine; D045726:Metalloproteases