[Studies on chemical constituents in stems of Zanthoxylum dissitum].

To study the chemical constituents from the stems of Zanthoxylum dissitum.Column chromatography on macroporous resin and silica gel, and spectral analysis were used to isolate and elucidate the constituents.Seven compounds were isolated and identified as 5,8-dimethoxyethane-3,4-epoxy-furanocoumarin (1), isoimpinellin (2), beta-sitosterol (3), lupeol (4), neohesperidin (5), beta-daucosterol (6), ursolic acid (7).All above the compounds were isolated from the plant for the first time and the compound 1 is a new compound.