Abstract: Eight compounds were isolated from Pinellia ternate by utilizing various chromatographic methods. Their structures were identified as pinellactam (1),2(furan-2-yl)-5-(2,3,4-trihydroxy-butyl)-1,4-diazine (2),cyclo(Pro-Leu) (3),β-carboline (4),apigenin-6-C-arabinosyl-8-C-galactoside (5),apigenin-6-C-galactosyl-8-C-arabinoside (6), 6-O-angeloylprenolin (7) and 4-O-methyl-3′-O-demethyl-secoisolariciresinol (8),respectively,by spectroscopic data.Compound 1 is a new lactam and 2-8 were isolated from this material for the first time.

Key words: Pinellia ternata, Araceae, lactam