This paper describes a new series of four DNA-intercalating agents with promising anticancer activities, based on ruthenium(II) with the planar ligand dpqQX (dpqQX = dipyrido[3,2-a:2',3'-c]quinoxaline[2,3-b]quinoxaline). The complexes identified as trans-[RuCl2(dppb)(dpqQX)], cis-[RuCl2(dppb)(dpqQX)], ct-[RuCl(CO)(dppb)(dpqQX)]PF6 and ct-[RuCl2(PPh3)2(dpqQX)] (dppb = 1,4-bis(diphenylphosphine)butane and PPh3 = ...
Financiadora de Estudos e Projetos; In this thesis phosphinic ruthenium complexes coordinated to ligands of biological interest: folic acid, 6-mercaptopurine, 2-mercaptopyridine and 8-aminoquinoline, dpqQX, dppz and dpq (dipyridophenazine and derivatives) mainly, were synthesised from the precursor complexes [RuCl2(PPh3)3], [RuCl2(dppb)(PPh3)] and cis- [RuCl2(dppb)(bipy)] and characterized by the usual techniqu...
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior; This work describes the syntheses of tin(IV) complexes with dithiocarbimates derived from sulfonamides and their characterization by elemental analyses, Mössbauer, infrared, 1H and 13C NMR spectroscopies. Eight complexes of the general formula: [Sn(RSO2N=CS2)3]2- (R = CH3, CH3CH2, CH3(CH2)3, CH3(CH2)7, C6H5, o-CH3C6H4, p-CH3C6H4, p-ClC6H4), were synth...