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

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 structures have been elucidated by NMR experiments and CAD mass spectra. Radical scavenging efficacy of the metabolites was assessed by DPPH and ABTS methods.