Hydrogen atom abstraction from resveratrol and two lipophilic derivatives by tert-butoxyl radicals. A laser flash photolysis study (Articolo in rivista)

Type

• Prodotto della ricerca (Classe)
• Articolo in rivista (Classe)

Label

• Hydrogen atom abstraction from resveratrol and two lipophilic derivatives by tert-butoxyl radicals. A laser flash photolysis study (Articolo in rivista) (literal)

Anno

• 2004-01-01T00:00:00+01:00 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi

• 10.1039/B410802G (literal)

Alternative label

• Petralia S., Spatafora C., Tringali C., Foti M. C., Sortino S. (2004)
  Hydrogen atom abstraction from resveratrol and two lipophilic derivatives by tert-butoxyl radicals. A laser flash photolysis study
  in New journal of chemistry (1987)
  (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

• Petralia S., Spatafora C., Tringali C., Foti M. C., Sortino S. (literal)

Pagina inizio

• 1484 (literal)

Pagina fine

• 1487 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url

• http://pubs.rsc.org/en/content/articlepdf/2004/nj/b410802g (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume

• 28 (literal)

Rivista

• New journal of chemistry (Rivista)

Note

• ISI Web of Science (WOS) (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni

• Istituto di Chimica Biomolecolare del CNR, via Del Satuario 110 (CT) Dipartimento di Scienze Chimiche, Università degli Studi di Catania, Viale A. Doria 8 (CT) (literal)

Titolo

• Hydrogen atom abstraction from resveratrol and two lipophilic derivatives by tert-butoxyl radicals. A laser flash photolysis study (literal)

Abstract

• The reactions of tert-butoxyl radicals with resveratrol (1) and two acetylated derivatives (2 and 3) have been investigated by laser flash photolysis techniques in 1:2 (v/v) benzene-di-tert-butyl peroxide at room temperature. The transient absorption spectra of the phenoxyl radicals generated upon H atom abstraction by tert-butoxyl radicals from the phenols have been detected and assigned. The absolute rate constants for these reactions have been evaluated to be 45 × 107, 25 × 107 and 4 × 107 M-1 s-1 for 1, 2 and 3, respectively. The order of reactivity 1 >= 2 >> 3 has been rationalized in terms of the position and effect of the acetyl groups on the aromatic rings. Of the three OH groups present in resveratrol, the one in position 4? appears to be the most reactive due to the large stability of the corresponding phenoxyl radical by conjugation with the rings. However, in our system, the H-atom-donating ability of resveratrol turns out to be inferior to that of ?-tocopherol by ca. one order of magnitude. (literal)

Prodotto di

• Istituto di chimica biomolecolare (ICB) (Istituto)
• Antiossidanti per uso farmaceutico, cosmetico e alimentare (PM.P01.010.001) (Modulo)
• Studi molecolari e valorizzazione di risorse per il settore biomedico (PM.P01.009.001) (Modulo)

Autore CNR

• MARIO CONCETTO FOTI (Unità di personale interno)

Incoming links:

Autore CNR di

• MARIO CONCETTO FOTI (Unità di personale interno)

Prodotto

• Istituto di chimica biomolecolare (ICB) (Istituto)
• Studi molecolari e valorizzazione di risorse per il settore biomedico (PM.P01.009.001) (Modulo)
• Antiossidanti per uso farmaceutico, cosmetico e alimentare (PM.P01.010.001) (Modulo)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#rivistaDi

• New journal of chemistry (Rivista)