agestricin A dimethyl ether;2',3',4',6'-tetramethoxy-3,4-methylenedioxy-trans-chalcone;2',3',4',6'-Tetramethoxy-3,4-methylendioxy-trans-chalkon;(E)-3-(1,3-benzodioxol-5-yl)-1-(2,3,4,6-tetramethoxyphenyl)prop-2-en-1-one
Abstract Four new flavonoids, three flavanones and one chalcone, were isolated from aerial parts of Ageratumstrictum. Their structures were establised as 3′6′-dihydroxy-2′, 4′-dimethoxy- 3, 4-methylenedioxy-chalcone, 6-hydroxy-5,7-dimethoxy-3′,4′-methylenedioxyflavanone, 6-hydroxy- 5,7,3′,4′-tetramethoxyflavanone and 6,4′-dihydroxy-5,7,3′-trimethoxyflavanone on the basis of spectral data and chemical