Abstract:In order to understand the chemical constituents of dregs of Brucea javanica, ten compounds were isolated and purified by column chromatography. On the basis of spectral data, their structures were identified as p-hydroxybenzoic acid (1), p-hydroxy-benzaldehyde (2), 3,4-dihydroxybenzoic acid (3), 3,4-dihydroxy- benzaldehyde (4), coniferaldehyde (5), sinapaldehyde (6), 1H-indole-3-carbaldehyde (7), 1H-indole-3-carboxylic acid (8), β-sitosterol (9), and brusatol (10). Compounds 4-6 and 8 were obtained from B. javanica for the first time.