title: Isolation and identification of three new flavones from Achillea millefolium L.
abstract: Column chromatography on silica gel of a petroleum ether extract of the flowering heads of Achillea millefolium L. allowed three flavones to be separated and identified. Spectral studies (PMR, mass spectrometry, and UV) and a comparison with data for compounds reported in the literature established the flavones as 5-hydroxy-3,6,7,4'-tetramethoxyflavone, artemetin, and casticin. These compounds have not been reported previously as constituents of A. millefolium.
mesh_terms: D005419:Flavonoids / Q000032:analysis / Q000302:isolation & purification*; D013058:Mass Spectrometry; D010946:Plants, Medicinal / Q000032:analysis*; D013056:Spectrophotometry, Ultraviolet
chemical_list: D005419:Flavonoids