Antioxidant activity of sequential extracts obtained from Chaerophyllum hirsutum was tested using the reaction with the stable radical 1,1 diphenyl-2-picrylhydrazyl (DPPH). Activity-guided fractionation led to the isolation of 6-methylluteolin, luteolin-7-O-beta-D-glucopyranoside, chlorogenic acid,
Two new lignan derivatives (1 and 2), along with the known scopoletin (3), methyl caffeate (4), falcarindiol (5), 3,5-dicaffeoylquinic acid, 3,5-dicaffeoylquinic methyl ester, chlorogenic acid, p-hydroxyphenylethyl-trans-ferulate, and vanillin, were isolated from extracts of the roots of