Browsing by Title Facultad de Ciencias Químicas y Farmacéuticas
Now showing items 3820-3839 of 4849
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(Universidad de Chile, 2017)En este trabajo se midió y evaluó la reactividad de los flavonoides Morina y Quercetina frente a oxígeno molecular singulete, en presencia de los iones metálicos Ca+2 y Cu+2, mediante determinaciones de las constantes de ...
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(Pergamon-Elsevier Science, 2020)Following previous studies where the metal-centered redox potentials of MN4 complexes are proposed as a reactivity descriptor for different electrochemical reactions, in the present work we expand this idea to a series of ...
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(AMER CHEMICAL SOC, 2003-02)A series of C4-substituted 1,4-dihydropyridines (DHP) with either secondary or tertiary nitrogen in the dihydropyridine ring were synthesized. All of these compounds together with some commercial DHP derivatives were tested ...
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(KLUWER ACADEMIC/PLENUM PUBL, 2004-10)Purpose. To study the reactivity of C4-substituted 1,4-dihydropyridines (1,4-DHP), with either secondary or tertiary nitrogen in the dihydropyridine ring, toward SIN-1-derived peroxynitrite in aqueous media at pH 7.4. Methods. ...
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(Elsevier, 2012)Volatile species with thiol functions are important contributors to the flavour of a wide variety of wine types. However, in spite of their importance, their fate during winemaking has not been fully elucidated. In this ...
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(2002)Complex [Mo(NHNPh2)(NNPh2)Br2(acac)], acac=acetylacetonate, reacts in acetonitrile with 1,10-phenanthroline, o-phen, and 2,2′-bipyridine, bpy, to afford complexes [Mo(NNPh2)2Br2(o-phen)], I, and [Mo(NNPh2)2Br2(bpy)], II. ...
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(JOHN WILEY & SONS LTD, 2009-06)Reactivity of two new C4-indolyl substituted 1,4-dihydropyridines (1,4-DHPs) toward superoxide anion (O-2) in dimethylsulfoxide (DMSO) is reported. Reactivity was followed by electrochemical and spectroscopic techniques. ...
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(2009)Reactivity of two new C4-indolyl substituted 1,4-dihydropyridines (1,4-DHPs) toward superoxide anion (O2-) in dimethylsulfoxide (DMSO) is reported. Reactivity was followed by electrochemical and spectroscopic techniques. ...
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(1971)A comparative study of the ligand reactivity at the 3-position in trisacetylacetonates of Cr(III) and Co(III), by means of nitration and Vilsmeier-Haack reactions, was attempted. The sequence Co > Cr in both reactions ...
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(Sociedad Chilena de Química, 1998)This paper reports the scavenging of the nitro radical anion of nisoldipine by N-acetylcysteine assessed by cyclic volatammetry (CV) and EPR spectroscopic techniques. Studies by CV on the reactivity of the radical were ...
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(Elsevier Ireland Ltd, 1996)The reactivity of the electrochemically generated nitro radical anion from nifedipine, a nitro aryl 1,4-dihydropyridine derivative, with relevant endobiotics and thiol-containing xenobiotics, was quantitatively assessed ...
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(1996)The reactivity of the electrochemically generated nitro radical anion from nicardipine, nitrendipine and nimodipine, all nitro aryl 1,4-dihydropyridine derivative, with relevant thiols, was quantitatively assessed by cyclic ...
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(Nature, 2015)Proliferation, differentiation and death of ovarian cells ensure orderly functioning of the female gonad during the reproductive phase, which ultimately ends with menopause in women. These processes are regulated by several ...
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(Nature, 2015)Proliferation, differentiation and death of ovarian cells ensure orderly functioning of the female gonad during the reproductive phase, which ultimately ends with menopause in women. These processes are regulated by several ...
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(American Chemical Society, 2020)In this article, we present a complementary analysis based on the reaction force F(xi)/reaction force constant kappa(xi) and noncovalent interactions (NCI) index to characterize the energetics (kinetic and thermodynamics) ...
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(2012)Photoisomerization of a protein bound chromophore is the basis of the light sensing and signaling responses of many photoreceptors. Z-to-E photoisomerization of the Pr Cph1Δ2 phytochrome has been investigated by polarization ...
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(Universidad de Chile, 2012)La presente práctica prolongada fue realizada en la Unidad de Farmacia del Centro de Referencia de Salud de Maipú, establecimiento de tipo experimental y descentralizado creado en el año 2000 por el D.F.L. N° 31, siendo ...
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(Universidad de Chile, 2006)El presente trabajo contiene las actividades desarrolladas en el laboratorio cosmético BEIERSDORF S.A. con el motivo del desarrollar una Práctica Profesional Prolongada como parte de la formación académica, para optar al ...
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(Magnolia Press, 2015)Copyright © 2015 Magnolia Press. The hairy long-nosed armadillo, currently referred as Dasypus (Cryptophractus) pilosus, is an enigmatic species endemic to montane cloud forests and subparamo of Peruvian Andes. Its strikingly ...
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(BENTHAM SCIENCE PUBL, 2005-04)The redox chemistry of different nitro compounds of biological significance is focused to understand how the reduction of the nitro group can play an active role in several aspects as: electroanalytical determinations, ...