<jats:p>The alkaloids chelerythrine, norchelerythrine, oxyavicine, canthine-6-one. 4,5-dihydrocanthin-6-one, and γ-fagarine were isolated from Zanthoxylum dimorphophyllum bark, together with two coumarins, scoparone and dimoxylin. This latter is a novel compound whose structure was elucidated on the basis of its spectral data