Eight flavonoids were identified from the flowers of Inula britannica var. chinensis as luteolin, diosmetin, chrysoeriol, kaempferol, quercetin, 6-hydroxyluteolin-6-methyl ether, spinacetin and eupatin. Their structures were established by spectroscopic methods. All of the identified compounds exhibited considerable antioxidant activity in the 1,1-diphenyl-2-picrylhydrazyl (DPPH) assay. Diosmetin (2) showed a strong growth inhibitory effect against P-388 leukemia cells.
All Science Journal Classification (ASJC) codes
- Food Science