Phenolic compounds from Jatropha curcas

Objective: To determine the chemical constituents of Jatropha curcas.Method: Chemical constituents were obtained using various chromatography methods including silica gel column chromatography and HPLC.The structures of isolated compounds were determined by spectroscopic methods including 1H-NMR,13C-NMR and MS.Result and Conclusion: Fourteen phenolic compounds were obtained from the stems of J.curcas and their structures were identified to be 5,4′-dihydroxy-3,7,3′-trimethoxyflavone(1),5,3′,4′-trihydroxy-3,7-dimethoxyflavone(2),3-O-methylquercetin(3),5,6,7-trimethoxycoumarin(4),tomentin(5),isoscopoletin(6),ω-hydroxypropioquaiacone(7),coniferaldehyde(8),3,5-dihydroxy-4-methoxybenzaldehyde(9),vanillic acid(10),isovanillin(11),4-hydroxybenzaldehyde(12),cimifugin(13) and(E)-3-hydroxy-5-methoxy-stilbene(14).Among them,compounds 1-4 and 6-14 were isolated from the genus of Jatropha for the first time.