The flavonoid 4’,5,7-trihydroxy-6,8-dimethylflavanone (farresol) and 3’,4’,-4trihydroxy chalcone (isoliquiritigenin) together with triterpenoid (friedelin) were isolated from the aerial parts of P. bracteata. The s...The flavonoid 4’,5,7-trihydroxy-6,8-dimethylflavanone (farresol) and 3’,4’,-4trihydroxy chalcone (isoliquiritigenin) together with triterpenoid (friedelin) were isolated from the aerial parts of P. bracteata. The structure of these compounds was determined on the basis of spectroscopic data including UV, IR, 1-D and 2-D, NMR and mass spectral analysis. This is the first report on the occurrence of these compounds in this plant.展开更多
文摘The flavonoid 4’,5,7-trihydroxy-6,8-dimethylflavanone (farresol) and 3’,4’,-4trihydroxy chalcone (isoliquiritigenin) together with triterpenoid (friedelin) were isolated from the aerial parts of P. bracteata. The structure of these compounds was determined on the basis of spectroscopic data including UV, IR, 1-D and 2-D, NMR and mass spectral analysis. This is the first report on the occurrence of these compounds in this plant.
