RESUMEN
Objective: To isolate and identify the chemical constituents from the seeds of Strychnos nux-vomica. Methods: Chromatographic separation techniques such as silica gel chromatography,ODS chromatography and Sephadex LH-20 chromatography were used for the isolation and purification. The structures of the chemical constituents were identified on the basis of mass spectrometry,NMR spectroscopy and so on. Results: 16 compounds were isolated and their structures were identified as: α-amyrin( 1), vomicine( 2), stearic acid( 3), ß-sitosterol( 4),vanillin( 5), ethyl gallate( 6),methyl gallate( 7),novacine( 8),strychnine( 9), daucosterol( 10),brucine chloromethochloride( 11),loganic acid( 12),strychnine chloromethochloride( 13),brucine( 14),geniposide( 15) and loganin( 16). Conclusion: Compounds 3,6,7 and 15 are isolated from this genus for the first time.