Studies on the coumarins in the root of Zanthoxylum dimorphophyllum

Objective To study the chemical constituents of the dried roots of Zanthoxylum dimorphophyllumr. spinifolium and to find out the active constituents of the plant. Method Modern chromatography was used to purify chemical constituents, and their structures were identified by various spectral methods. Result Four compounds were isolated and identified as isopimpinellin (I), xanthoxyletin (II), 6-(2', 3'-dihydroxy-3'-methyl-butyl)-7-hydroxy-2H-1-benzopyran-2-one (III), 6-(2'-O-beta-D-glucopyranosyloxy, 3'-dihydroxy-3'-methybutyl)-7-hydroxy-2H-1-benzopyran-2-one (IV). Conclusion All of the above compounds were isolated from the above mentioned plant for the first time.