D'Abrosca B.,Laboratorio Of Fitochimica |
Fiorentino A.,Laboratorio Of Fitochimica |
Ricci A.,Laboratorio Of Fitochimica |
Scognamiglio M.,Laboratorio Of Fitochimica |
And 3 more authors.
Phytochemistry Letters | Year: 2010
From the aerial parts of Petrorhagia velutina, a new dimeric p-coumaroyl glucose and two monomeric cis p-coumaroyl and feruloyl derivatives have been isolated along with three known related compounds. The structural characterization of these compounds has been elucidated by 1D and 2D NMR techniques. CAD mass spectra have allowed to confirm the spectroscopic structural analysis and to disclose the fragmentation pattern of the dimeric p-coumaroyl derivative. Radical scavenging efficacy of all the isolated metabolites was assessed by measuring their ability to scavenge DPPH radical and ABTS radical cation. The dimeric metabolite and the monomeric trans isomers showed an effective reducing power the oxidant probes. © 2009 Phytochemical Society of Europe. Source