Luteolin derivatives and antimicrobial activity of Achillea tenuifolia Lam. methanol extract

Two luteolin derivatives have been isolated from the aerial parts of Achillea tenuifolia and purified by column chromatography, TLC and preparative TLC techniques to yield compounds. The compounds were established as 5-hydroxy-3′,4′-dimethoxyflavone-7-O-(rhamnosyl) and 5-hydroxy-3′-methoxyflavone-4′-O-(penthenyl-4-one)-7-O-(2″-(rhamnosyl) rhamnoside).