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Two flavonoid glycosides 1 and 2 having the luteolin structure were iso- lated from flowers of the endemic plant species Cephalaria pastricensis .T hey were identified by 1 Ha nd 13 C NMR, as well as UV/Vis spectroscopy. The structures of 1 and 2 were also confirmed by the spectral data of aglycones and TLC of the sugars obtained after acid hydrolysis. Flavones 1 and 2 showed significant antiradical ac- tivity in the 1,1-diphenyl-2-picrylhydrazyl (DPPH) assay.

Flavonoids from flowers of Cephalaria pastricenis and their antiradical activity