Browsing by Author "Ortíz Yáñez, María Eugenia"
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Ortíz Yáñez, María Eugenia; Núñez Vergara, Luis; Squella Serrano, Juan (ELSEVIER SCIENCE, 2002-02-08)We have studied the O-2/O-2(.-) redox couple on the HMDE in DMSO aprotic media, obtaining optimal conditions of both oxygen concentration and scan rate in order to avoid oscillatory phenomena. By choosing the oxygen ...
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Ortíz Yáñez, María Eugenia; Núñez Vergara, Luis; Camargo Grandón, Rodrigo; Squella Serrano, Juan (KLUWER ACADEMIC/PLENUM PUBL, 2004-03)The final pyridine derivatives were separated and identified by gas chromatography/ mass spectrometry (GC-MS). The intermediates, anion dihydropyridine and the HO2./HO2- species, were observed from voltammetric studies and ...
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Ortíz Yáñez, María Eugenia; Núñez Vergara, Luis; Squella Serrano, Juan (KLUWER ACADEMIC/PLENUM PUBL, 2003-02)Purpose. To evaluate the reaction of a large series of pharmacologically significant 1,4-dihydropyridine (1,4-DHP) compounds with superoxide (O-2(.-)) in dimethylsulfoxide using differential pulse voltammetry and controlled ...
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Maya Arango, Juan; Morello Casté, Antonio; Repetto Scaramelli, Yolanda; Rodríguez, Andrés; Puebla, P.; Caballero S., Esther; Medarde, M.; Núñez Vergara, Luis; Squella Serrano, Juan; Ortíz Yáñez, María Eugenia; Fuentealba, J.; San Feliciano, Arturo (ACADEMIC PRESS INC, 2001-09)Chagas' disease constitutes a therapeutic challenge because presently available drugs have wide toxicity to the host and are generally ineffective in the chronic stages of the disease. A series of oxazolo(thiazolo)pyridene ...
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Ortíz Yáñez, María Eugenia; Núñez Vergara, Luis; Squella Serrano, Juan (ELSEVIER SCIENCE, 2003-06-05)A detailed investigation on the electrochemical reduction of oxygen was carried out using cyclic voltammetry at a glassy carbon electrode in dimethylsulphoxide (DMSO) containing 0.1 M tetrabutylammonium. perchlorate (TBAP) ...