Browsing by Author "Norambuena, Ester"

Now showing items 1-9 of 9

    • Antioxidant properties and free radical-scavenging reactivity of a family of hydroxynaphthalenones and ... 
      Rodríguez Borges, Jorge; Olea Azar, Claudio; Cavieres, C.; Norambuena, Ester; Delgado Castro, Tomás; Soto Delgado, Jorge; Araya Maturana, Ramiro (PERGAMON-ELSEVIER SCIENCE LTD, 2007-11-15)
      This study was undertaken to investigate the free radical -scavenging and antioxidant activities of various structurally related hydroquinones including hydroxynaplithalenones and dihydroxyanthracenones. Electron spin ...
    • Effect of ruthenium complexation on trypanocidal activity of 5-nitrofuryl containing thiosemicarbazones 
      Pagano, Mariana; Demoro, Bruno; Toloza, Jeannette; Boiani, Lucía; González, Mercedes; Cerecetto, Hugo; Olea Azar, Claudio; Norambuena, Ester; Gambino, Dinorah; Otero, Lucía (ELSEVIER FRANCE-EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER, 2009-12)
      In the search of new therapeutic tools for the treatment of American Trypanosomiasis, the largest parasitic disease burden in the American continent, three series of novel ruthenium complexes of the formula [RuCl2(HL)(2)], ...
    • ESR and electrochemical studies of 2-acylpyridines and 6,6 '-diacyl-2,2 '-bipyridines 
      Olea Azar, Claudio; Abarca, B.; Norambuena, Ester; Opazo, L.; Rigol, C.; Ballesteros, R.; Chadlaoui, M. (PERGAMON-ELSEVIER SCIENCE LTD, 2005-07)
      The ESR spectra of radicals obtained by electrolytic reduction of 2-acylpyridines and 6,6'-diacyl-2,2'-bipyridines were measured in dimethylsulfoxide (DMSO) and analyzed by quantum chemical calculations. The electrochemistry ...
    • ESR, electrochemical and cyclodextrin-inclusion studies of triazolopyridyl pyridyl ketones and dipyridyl ... 
      Olea Azar, Claudio; Abarca, B.; Norambuena, Ester; Opazo, L.; Jullian Matthaei, Carolina; Valencia, S.; Ballesteros, R.; Chadlaoui, M. (Elsevier B.V., 2008-11)
      The electron spin resonance (ESR) spectra of free radicals obtained by electrolytic reduction of triazolopyridyl pyridyl ketones and dipyridyl ketones derivatives were measured in dimethylsulfoxide (DMSO). The hyperfine ...
    • ESR, electrochemical and reactivity studies of antitrypanosomal palladium thiosemicarbazone complexes 
      Otero, Lucía; Folch, Christian; Barriga, Germán; Rigol Olsen, Carolina; Opazo, Lucía; Vieites, Marisol; Gambino, Dinorah; Cerecetto, Hugo; Norambuena, Ester; Olea Azar, Claudio (Elsevier B.V., 2008-08)
      Cyclic voltammetry (CV) and electron spin resonance (ESR) techniques were used in the investigation of novel palladium complexes with bioactive thiosemicarbazones derived from 5-nitrofurane or 5-nitrofurylacroleine. Sixteen ...
    • ESR, electrochemical, molecular modeling and biological evaluation of 4-substituted and 1,4-disubstituted ... 
      Aguilera, Benjamín; Olea Azar, Claudio; Norambuena, Ester; Arán, Vicente J.; Mendizábal Emaldía, Fernando; Lapier, Michel; Maya Arango, Juan; Kemmerling Weis, Ulrike; López Muñoz, Rodrigo (PERGAMON-ELSEVIER SCIENCE LTD, 2011-03)
      Electrochemical and ESR studies were carried out in this work with the aim of characterizing the reduction mechanisms of 4-substituted and 1,4-disubstituted 7-nitroquinoxalin-2-ones by means of cyclic voltammetry in DMSO ...
    • New heteroaryl nitrones with spin trap properties: Identification of a 4-furoxanyl derivative with excellent ... 
      Barriga, Germán; Olea Azar, Claudio; Norambuena, Ester; Castro, Ana; Porcal, Williams; Gerpe, Alejandra; González, Mercedes; Cerecetto, Hugo (ELSEVIER, 2010)
      A new series of heteroaryl nitrones, 1–7, bearing furoxanyl and thiadiazolyl moieties, were evaluated for their free radical-trapping properties. The physicochemical characterization by electron paramagnetic resonance ...
    • Platinum(II) metal complexes as potential anti-Trypanosoma cruzi agents 
      Vieites, Marisol; Otero, Lucía; Santos, Diego; Toloza, Jeannette; Figueroa, Roberto; Norambuena, Ester; Olea Azar, Claudio; Aguirre, Gabriela; Cerecetto, Hugo; González, Mercedes; Morello Casté, Antonio; Maya Arango, Juan; Garat, Beatriz; Gambino, Dinorah (ELSEVIER SCIENCE INC, 2008-05)
      In the search for new therapeutic tools against Chagas’ disease (American Trypanosomiasis) two series of new platinum(II) complexes with bioactive 5-nitrofuryl containing thiosemicarbazones as ligands were synthesized, ...
    • Stoichiometry and conditional stability constants of Cu(II) or Zn(II) clioquinol complexes; implications ... 
      Ferrada, Evandro; Arancibia, Verónica; Loeb, Bárbara; Norambuena, Ester; Olea Azar, Claudio; Huidobro Toro, Juan Pablo (ELSEVIER SCIENCE BV, 2007-05)
      Successful trials with 5-chloro-7-iodo-8-hydroxyquinoline (clioquinol, CQ) for Alzheimer’s disease treatment prompted renewed interest in assessing whether its therapeutic action is related to the coordination of ...