Browsing by Author "959041aa-f78e-4786-baf7-a8f83013aa8b"
Now showing items 1-13 of 13
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García Beltrán, Olimpo; Mena, Natalia; Berríos, Tania A.; Castro, Enrique A.; Cassels Niven, Bruce; Núñez González, Marco; Aliaga, Margarita E. (2012)In this Letter we present a new probe, 2-amino-3-hydroxy-2-(hydroxymethyl) propyl 2-(7-hydroxy-2-oxo-2H-chromen-4-yl)acetate (PMR), which can reversibly detect mercuric ions (Hg 2+) in HEPES buffer under physiological ...
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Mena, Natalia P.; García Beltrán, Olimpo; Lourido, Fernanda; Urrutia, Pamela J.; Mena, Raúl; Castro Castillo, Vicente; Cassels Niven, Bruce; Núñez González, Marco (Elsevier, 2016)
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García Beltrán, Olimpo; Mena, Natalia; Friedrich, Leidi C.; Netto-Ferreira, José Carlos; Vargas, Víctor; Quina, Frank H.; Núñez González, Marco; Cassels Niven, Bruce (2012)The novel coumarin-based 'turn-on' fluorescent probe (E)-3-(2,5- dimethoxybenzylideneamino)-7-hydroxy-2H-chromen-2-one (MGM) was designed, synthesized, and characterized. This compound shows high selectivity for Cu +2, ...
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García Beltrán, Olimpo; Mena, Natalia; Yañez, Osvaldo; Caballero, Julio; Vargas, Víctor; Núñez González, Marco; Cassels Niven, Bruce (Elsevier Masson SAS, 2013)A new coumarin-based 'turn-off' fluorescent probe, 7-(diethylamino)-N-(1,3- dihydroxy-2-(hydroxymethyl) propan-2-yl)-2-oxo-2H-chromene-3-carboxamide (AGD) was synthesized. This compound is highly selective for ferrous ions ...
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Galdámez, Antonio; García Beltrán, Olimpo; Cassels Niven, Bruce (2011)
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Galdámez, Antonio; García Beltrán, Olimpo; Cassels Niven, Bruce (Sociedad Chilena de Quimica, 2011)The crystal structure of ethyl 7-hydroxy-2-oxo-2H-chromene-3-carboxylate monohydrate (1), C12H10O5.H2O, was established by X-ray crystallographic analysis. The molecule of the title compound is essentially planar except ...
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Romero, Néstor; Areche Medina, Carlos; Cubides Cárdenas, Jaime; Escobar, Natalia; García Beltrán, Olimpo; Simirgiotis, Mario J.; Céspedes, Ángel (MDPI, 2020)In the present work, the anthelmintic activity (AA) of ethanolic extracts obtained fromGliricidia sepium,Leucaena leucocephala, andPithecellobium dulcewas evaluated using the third-stage-larval (L-3) exsheathment inhibition ...
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Aguirre, Pabla; García Beltrán, Olimpo; Tapia, Victoria; Muñoz, Yorka; Cassels Niven, Bruce; Núñez González, Marco (American Chemical Society, 2017)© 2016 American Chemical Society.Disturbed iron homeostasis, often coupled to mitochondrial dysfunction, plays an important role in the progression of common neurodegenerative diseases such as Parkinson’s disease (PD). ...
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Salgado, Francisco; Albornoz, Laura; Cortez, Carmen; Stashenko, Elena; Urrea Vallejo, Kelly; Nagles, Edgar; Galicia Virviescas, Cesar; Cornejo, Alberto; Ardiles, Alejandro; Simirgiotis, Mario J.; García Beltrán, Olimpo; Areche Medina, Carlos (MDPI, 2018)Lichens are symbiotic associations of fungi with microalgae and/or cyanobacteria, which are considered among the slowest growing organisms, with strong tolerance to adverse environmental conditions. There are about 400 ...
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García Beltrán, Olimpo; Soto Delgado, Jorge; Iturriaga-Vásquez, Patricio; Areche, Carlos; Cassels Niven, Bruce (Sociedad Chilena de Quimica, 2012)The diene Erythrina alkaloids erysotrine (1), erysodine (2), erythraline (3), erytharbine (4), and erysotrine N-oxide (5), plus the hydroxylated dihydro derivative of 1, epierythratidine (6) were isolated from seeds of ...
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García Beltrán, Olimpo; Areche Medina, Carlos; Galdámez Silva, Antonio; Moris, Silvana (Walter de Gruyter GMBH, 2020)C14H19N2O2Cl, tetragonal, P41 (no. 76), a = 6.8614(8) Å, c = 29.820(5) Å, V = 1403.9(4) Å3 , Z = 4, Rgt(F) = 0.0311, wRref(F 2 ) = 0.0549, T = 150(2) K
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García Beltrán, Olimpo; Mena Jiménez, Natalia; Pérez, Edwin; Cassels Niven, Bruce; Núñez González, Marco; Werlinger, Francisca; Zavala, Daniel; Aliaga, Margarita E.; Pavez, Paulina (Elsevier, 2011)Two fluorescence probes for the detection of cysteine (Cys), glutathione (GSH) and other biothiols, such as homocysteine (Hcy) and cysteinyl-glycine (Cys-Gly), were developed. These molecular probes are coumarin-based ...
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Jiménez-González, Andrea; Quispe, Cristina; Bórquez, Jorge; Sepúlveda, Beatriz; Riveros, Felipe; Areche, Carlos; Nagles, Edgar; García Beltrán, Olimpo; Simirgiotis, Mario J. (Taylor & Francis, 2018)UHPLC/ESI/MS identification of organic compounds is the first step in the majority of screening techniques for the characterization of biologically active metabolites in natural sources. This paper describes a method for ...