Structural characterization and radical scavenging activity of monomeric and dimeric cinnamoyl glucose esters from Petrorhagia velutina leaves

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• 作者：Brigida D’ ; Abrosca ; Antonio Fiorentino ; Andreina Ricci ; Monica Scognamiglio ; Severina Pacifico ; Simona Piccolella ; Pietro Monaco
• 关键词：Petrorhagia velutina ; Cariophyllaceae ; Cinnamoyl glucose esters ; Spectroscopic analysis ; Radical scavenging activity
• 刊名：Phytochemistry Letters
• 出版年：2010
• 出版时间：12 March 2010
• 年：2010
• 卷：3
• 期：1
• 页码：38-44
• 全文大小：258 K

文摘

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.