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dc.contributor.author | Vayá Pérez, Ignacio | es_ES |
dc.contributor.author | Andreu Ros, María Inmaculada | es_ES |
dc.contributor.author | Jiménez Molero, María Consuelo | es_ES |
dc.contributor.author | Miranda Alonso, Miguel Ángel | es_ES |
dc.date.accessioned | 2015-06-11T12:08:21Z | |
dc.date.available | 2015-06-11T12:08:21Z | |
dc.date.issued | 2014 | |
dc.identifier.issn | 1474-905X | |
dc.identifier.uri | http://hdl.handle.net/10251/51552 | |
dc.description.abstract | The photooxygenation of model compounds containing the two enantiomers of naproxen (NPX) covalently linked to histidine (His), tryptophan (Trp) and tyrosine (Tyr) has been investigated by steady state irradiation, fluorescence spectroscopy and laser flash photolysis. The NPX–His systems presented the highest oxygen-mediated photoreactivity. Their fluorescence spectra matched that of isolated NPX and showed a clear quenching by oxygen, leading to a diminished production of the NPX triplet excited state ( 3 NPX*–His). Analysis of the NPX–His and NPX–Trp photolysates by UPLC-MS–MS revealed in both cases the formation of two photoproducts, arising from the reaction of singlet oxygen (1 O2) with the amino acid moiety. The most remarkable feature of NPX–Trp systems was a fast and stereoselective intramolecular fluorescence quenching, which prevented the efficient formation of 3 NPX*–Trp, thus explaining their lower reactivity towards photooxygenation. Finally, the NPX–Tyr systems were nearly unreactive and exhibited photophysical properties essentially coincident with those of the parent NPX. Overall, these results point to a type II photooxygenation mechanism, triggered by generation of 1 O2 from the 3 NPX* chromophore | es_ES |
dc.description.sponsorship | Financial support from the Spanish Government (CTQ2010-14882, JCI-2011-09926, Miguel Servet CP11/00154), from the EU (PCIG12-GA-2012-334257), from the Universitat Politecnica de Valencia (SP20120757) and from the Conselleria de Educacio, cultura i Esport (PROMETEOII/2013/005, GV/2013/051) is gratefully acknowledged. | en_EN |
dc.language | Inglés | es_ES |
dc.publisher | Royal Society of Chemistry | es_ES |
dc.relation.ispartof | Photochemical & Photobiological Sciences Photochemical and Photobiological Sciences | es_ES |
dc.rights | Reserva de todos los derechos | es_ES |
dc.subject | Amino acid | es_ES |
dc.subject | Naproxen | es_ES |
dc.subject | Oxygen | es_ES |
dc.subject | Absorption | es_ES |
dc.subject | Chemical structure | es_ES |
dc.subject | Chemistry | es_ES |
dc.subject | Conformation | es_ES |
dc.subject | Photolysis | es_ES |
dc.subject | Molecular Conformation | es_ES |
dc.subject.classification | QUIMICA ORGANICA | es_ES |
dc.subject.classification | QUIMICA ANALITICA | es_ES |
dc.title | Photooxygenation mechanisms in naproxen-amino acid linked systems | es_ES |
dc.type | Artículo | es_ES |
dc.identifier.doi | 10.1039/c3pp50252j | |
dc.relation.projectID | info:eu-repo/grantAgreement/MICINN//CTQ2010-14882/ES/DIADAS FOTOACTIVAS COMO SONDAS PARA LA GENERACION DE ESPECIES TRANSITORIAS EN SISTEMAS MICROHETEROGENEOS DE TIPO BIOMIMETICO/ | es_ES |
dc.relation.projectID | info:eu-repo/grantAgreement/GVA//GV%2F2013%2F051/ | es_ES |
dc.relation.projectID | info:eu-repo/grantAgreement/EC/FP7/334257/EU/EXCITED STATES AS PROBES TO INVESTIGATE DRUG-DNA AND DRUG-PROTEIN INTERACTIONS. PHOTOSENSITIZED PROCESSES LEADING TO DAMAGE TO BIOMOLECULES/ | |
dc.relation.projectID | info:eu-repo/grantAgreement/UPV//SP20120757/ | es_ES |
dc.relation.projectID | info:eu-repo/grantAgreement/GVA//PROMETEOII%2F2013%2F005/ES/ESPECIES FOTOACTIVAS Y SU INTERACCION CON BIOMOLECULAS/ | es_ES |
dc.relation.projectID | info:eu-repo/grantAgreement/MICINN//JCI-2011-09926/ES/JCI-2011-09926/ | es_ES |
dc.relation.projectID | info:eu-repo/grantAgreement/MICINN//CP11%2F00154/ES/CP11%2F00154/ / | es_ES |
dc.rights.accessRights | Abierto | es_ES |
dc.contributor.affiliation | Universitat Politècnica de València. Departamento de Química - Departament de Química | es_ES |
dc.contributor.affiliation | Universitat Politècnica de València. Instituto Universitario Mixto de Tecnología Química - Institut Universitari Mixt de Tecnologia Química | es_ES |
dc.description.bibliographicCitation | Vayá Pérez, I.; Andreu Ros, MI.; Jiménez Molero, MC.; Miranda Alonso, MÁ. (2014). Photooxygenation mechanisms in naproxen-amino acid linked systems. Photochemical & Photobiological Sciences Photochemical and Photobiological Sciences. 13:224-230. https://doi.org/10.1039/c3pp50252j | es_ES |
dc.description.accrualMethod | S | es_ES |
dc.relation.publisherversion | http://dx.doi.org/10.1039/c3pp50252j | es_ES |
dc.description.upvformatpinicio | 224 | es_ES |
dc.description.upvformatpfin | 230 | es_ES |
dc.type.version | info:eu-repo/semantics/publishedVersion | es_ES |
dc.description.volume | 13 | es_ES |
dc.relation.senia | 254956 | |
dc.identifier.eissn | 1474-9092 | |
dc.contributor.funder | Ministerio de Ciencia e Innovación | es_ES |
dc.contributor.funder | Generalitat Valenciana | es_ES |
dc.contributor.funder | Universitat Politècnica de València | es_ES |
dc.contributor.funder | European Commission | |
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