Chemical constituents from the root bark of Formosan Zanthoxylum ailanthoides

Two new N-isobutylamides, hydroxy lanyuamide I (1) and hydroxy lanyuamide II (2), together with one hundred and ten known compounds, have been isolated from the root bark of Formosan Zanthoxylum ailanthoides. These known compounds include twenty coumarins, twenty-one benzo[c]phenanthridines, ten quinoline derivatives, one aporphine, one purine, seven amides, twelve benzenoids, one lactone, four flavonoids, nine lignans, eight steroids, two chlorophylls, eleven terpenoids and three other compounds, which were determined by means of spectral analyses.