Chemical Constituents from Inula Japonica Thunb

OBJECTIVE To study the chemical constituents in Inula japonica Thunb. METHODS A variety of separation technologies were used for the isolation of compounds, and their structures were identified by physical properties and spectroscopic techniques (NMR, IR, UV and MS). RESULTS Eleven compounds, chrysoeriol(Ⅰ), patuletin(Ⅱ), quercetin(Ⅲ), luteolin(Ⅳ), kaempferol(Ⅴ), inuchinenolide C(Ⅵ), britannilactone(Ⅶ), daucosterol(Ⅷ), β-sitosterol(Ⅸ), britanin(Ⅹ) and ivangustin(Ⅺ), were obtained from Inula japonica Thunb. CONCLUSION Compound Ⅰ was isolated from this genus for the first time.