Four flavonoids from Scutellaria baicalensis

Abstract A new flavonoid glycoside, viscidulin III-2′- O -β- d -glucoside and three known flavones, 5,7,2′,5′-tetrahydroxyflavone, (−)-eriodictyol and rivularin were isolated from the roots of Scutellaria baicalensis for the first time.