Synthesis, chemical identification, antioxidant capacities and immunological evaluation studies of a novel silver(I) carbocysteine complex

A new silver-carbocysteine (Ccy-Ag) complex [Ag-2(Ccy)(2)(H2O)(2)] has been synthesized and characterized by using a combination of FTIR, Raman, molar conductivity, H-1 NMR, electronic spectra, thermal analyses, X-ray powder diffraction (XRD) and scanning electron microscopy (SEM). The infrared spectrum of Ccy-Ag complex in comparison with carbocysteine ligand prove that Ccy behaves as monobasic bidentate chelate to the silver metal ions via the deprotonated carboxylate O atom. The assessments of Ccy and its complexation with Ag+ in treating COPD, evaluating immune activities through measuring IL-8, TGF-beta 1, VEGF and TNF-alpha, antioxidant activities of (Ccy-Ag) complex by measuring SOD, MDA and GPX and bronchial asthma were discussed. (C) 2014 Elsevier Ireland Ltd. All rights reserved.