Browsing by Author "Sobarzo Sánchez, Eduardo"
Now showing items 21-39 of 39
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Pérez Cruz, Fernanda; Aguilera Venegas, Benjamín; Lapier, Michel; Sobarzo Sánchez, Eduardo; Uriarte Villares, Eugenio; Olea Azar, Claudio (2013)A new nitrooxoisoaporphine derivative was synthetized and characterized by cyclic voltammetry and electron spin resonance. Its aqueous solubility was improved by complexes formation with β-cyclodextrin, heptakis(2,6-di-O- ...
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Pérez Cruz, Fernanda; Aguilera Venegas, Benjamín; Lapier, Michel; Sobarzo Sánchez, Eduardo; Uriarte Villares, Eugenio; Olea Azar, Claudio (Elsevier, 2012-10-26)A new nitrooxoisoaporphine derivative was synthetized and characterized by cyclic voltammetry and electron spin resonance. Its aqueous solubility was improved by complexes formation with b-cyclodextrin, heptakis(2,6-di ...
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Folch Cano, Christian; Olea Azar, Claudio; Sobarzo Sánchez, Eduardo; Alvarez-Lorenzo, Carmen; Concheiro, Angel; Otero, Francisco; Jullian Matthaei, Carolina (2011)The physicochemical properties of 4-hydroxy-7-methoxy-3-phenyl-2H-chromen- 2-one (4HC) and β-cyclodextrins (CDs) inclusion complexes were investigated. The phase solubility profile of 4HC with β-cyclodextrin derivatives ...
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Sobarzo Sánchez, Eduardo; Saitz Barría, Claudio; Jullian Matthaei, Carolina; Cassels Niven, Bruce (MARCEL DEKKER INC, 2002)The abundant aporphine alkaloid (S)-(+)-boldine (1) was selectively nitrosated with sodium nitrite in acetic acid affording 8-nitrosoboldine (2) which was hydrogenated catalytically to give 8-aminoboldine (3). The latter ...
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Sobarzo Sánchez, Eduardo; Cassels Niven, Bruce; Saitz Barría, Claudio; Jullian Matthaei, Carolina (JOHN WILEY & SONS LTD, 2001-06)The novel heterocycles 1,11-dimethoxy-2-hydroxy-6-methyloxazolo[4,5-k]-5,6,6a,7-tetrahydro-4H-dibenzo [de,g]quinoline, 1,12-dimethoxy-2-hydroxy-6-methyl-9-phenyl-10H-oxazin[5,6-k]-5,6,6a,7-tetrahydro-4H-dibenzo ...
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Aliaga, Christian; Cerón-Neculpán, Masiel; Saitz Barría, Claudio; Jullian Matthaei, Carolina; Sobarzo Sánchez, Eduardo; De la Fuente, Julio (2011)During the 1H NMR study of the photoreduction of aza-oxoisoaporphines, aza-OIAs, (7H-benzo[e]perimidin-7-ones) by amines we found an unexpected H/D isotopic exchange in the aromatic positions 4 and 6 of these molecules. ...
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Fuente, J. de la; Neira Pacheco, Verónica Alejandra; Saitz Barría, Claudio; Jullian Matthaei, Carolina; Sobarzo Sánchez, Eduardo (AMER CHEMICAL SOC, 2005-07-07)Photoreduction by amines of oxoisoaporphine dyes occurs via a stepwise mechanism of electron-proton electron transfer that leads to the metastable N-hydrogen oxoisoaporphine anion. During photoreduction that occurs from ...
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De la Fuente, Julio; Aliaga, Christian; Poblete, Cristian; Zapata, Gerald; Jullian Matthaei, Carolina; Saitz Barría, Claudio; Cañete, Alvaro; Kciuk, Gabriel; Sobarzo Sánchez, Eduardo; Bobrowski, Krzysztof (2009)Photoreduction of oxoisoaporphine (OIA) (l-aza-benzo-[de]anthracen-7-one) and its 5-methoxy (5-MeOOIA) derivative by selected amines (two non-a-hydrogen-donating amines (l,4-diaza[2.2.2]-bicyclooctane (DABCO) and ...
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Sobarzo Sánchez, Eduardo; Cassels Niven, Bruce; Castedo, Luis (John Wiley & Sons, Ltd., 2003-03-10)2,3,8,9,10,11-Hexahydro-7H-dibenzo[de,h]quinolin-7- one, 5-methoxy-2,3,8,9,10,11-hexahydro-7H-dibenzo[de,h] quinolin-7-one, 5-methoxy-6-hydroxy-1,2,3,7a,8,9,10,11, 11a,11b-decahydro-7H-dibenzo[de,h]quinolin-7-one, ...
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Sobarzo Sánchez, Eduardo; Cassels Niven, Bruce; Jullian Matthaei, Carolina; Castedo, Luis (John Wiley & Sons, Ltd., 2003-01-07)inolin- 7-one, 2,3-dihydro-5-methoxy-7H-dibenzo [de,h] quinolin-7-one, 5-methoxy-6-hydroxy-2,3-dihydro-7Hdibenzo[ de,h]quinolin-7-one, 5,6-dimethoxy-2,3-dihydro- 7H-dibenzo[de,h]quinolin-7-one and 5,6-methylenedioxy- ...
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Hidalgo, María E.; Alarcón, Myriam G.; Ojeda, Juan R.; Fernández, Ernesto C.; Sobarzo Sánchez, Eduardo; Fuente, Julio de la (Sociedade Brasileira de Quimica, 2010)The aim of this study was to determine the influence of the substituent groups on the photostability of eight boldine derivatives, including some oxazole and oxazinone derivatives, in order to increase the sunscreen ...
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Sobarzo Sánchez, Eduardo; Castedo, Luis; Fuente, J. de la (SPRINGER/PLENUM PUBLISHERS, 2006-10)5,6-Dimethoxy-2,3-dihydro-7H-dibenzo[de,h] quinolin-7-one has been synthesized by cyclization of phenylethylaminophtalides with polyphosphoric acid and characterized by X-ray diffraction and NMR assignments. A theoretical ...
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Sobarzo Sánchez, Eduardo; Castedo, Luis; Fuente, Julio R. de la (SPRINGER/PLENUM PUBLISHERS, 2006-10)5,6-Dimethoxy-2,3-dihydro-7H-dibenzo[de,h] quinolin-7-one has been synthesized by cyclization of phenylethylaminophtalides with polyphosphoric acid and characterized by X-ray diffraction and NMR assignments. A theoretical ...
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Sobarzo Sánchez, Eduardo; Fuente, Julio de la; Castedo, Luis (2005)The new oxoisoaporphines 7H-dibenzo[de,h]quinolin-7-one, 5-methoxy-7H-dibenzo[de,h]quinolin-7-one, 5-methoxy-6-hydroxy-7H-dibenzo[de,h] quinolin-7-one, 5-hydroxy-7H-dibenzo[de,h]quinolin-7-one and 5-methoxy-6H-dibenzo[de ...
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Sobarzo Sánchez, Eduardo; Castedo, Luis; Fuente, Julio de la (2007)Coupling nicotinoyl chloride with 3,4-dimetoxyphenethylamine under Bischler-Napieralski cyclization afforded the isoquinoline (4) in good yield. This latter was used as starting material to obtain with only hydrobromic ...
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Gómez Jeria, Juan; Lagos Arancibia, Luis; Sobarzo Sánchez, Eduardo (Sociedad Chilena de Química, 2002-12-02)AZINDO/1 quantum-chemical structure-affinity relationship study is presented for the interaction of a group of 7-arylidenenaltrexones with !l, Kand O opioid receptors. From this work it is concluded tha!: 1. The internal ...
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Gómez Jeria, Juan; Lagos Arancibia, Luis; Sobarzo Sánchez, Eduardo (Sociedad Chilena de Química, 2002-12-02)A ZINDO/1 quantum-chemical structure-affinity relationship study is presented for the interaction of a group of 7-arylidenenaltrexones with m , k and d opioid receptors. From this work it is concluded that: 1. The ...
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Fuente, J. de la; Kciuk, G.; Sobarzo Sánchez, Eduardo; Bobrowski, Krzysztof (AMER CHEMICAL SOC, 2008-10-16)The absorption-spectral and kinetic behavior of radical ions and triplet states of two oxoisoaporphine derivatives, 2,3-dihydrooxoisoaporphine (2,3-DHOA) and 5-methoxy-2,3-dihydrooxoisoaporphine (5-MeO-2,3-DHOA), have been ...
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Fuente, J. de la; Jullian Matthaei, Carolina; Saitz Barría, Claudio; Neira Pacheco, Verónica Alejandra; Poblete, Oscar.; Sobarzo Sánchez, Eduardo (AMER CHEMICAL SOC, 2005-10-28)Photoreduction of oxoisoaporphine dyes occurs via a stepwise mechanism of electron-protonelectron transfer that leads to the N-hydrogen oxoisoaporphine anion. When triethylamine, TEA, was used as the electron donor in ...