[Studies on the constituents of Leucoseptrum stellipillum]

Flavonoids, triterpenoids, and steroids were isolated from the leaves of Leucoseptrum stellipillum (MIQ). Kitamura et Murata and identified as apigenin, luteolin, chrysoeriol, ursolic acid, pomolic acid, tormentic acid, beta-sitosterol, and beta-sitosterol glucoside by comparison of their spectral data with those of authentic specimens. Among these compounds, the triterpenoids showed significant antibacterial activities against Streptococcus mutans.