A New Prenylated Xanthone from Root Barks of Cudrania cochinchinensis

作     者：LIU Zhi-ping WEI Wan-xing ZHOU Min GAN Chun-fang LIU Sheng 

作者机构：College of Chemistry and Chemical EngineeringGuangxi University College of Chemistry and Life ScienceGuangxi Teachers Education University 

出 版 物：《Chinese Herbal Medicines》 (中草药（英文版）)

年 卷 期：2013年第5卷第2期

页      面：101-103页

学科分类：1008[医学-中药学(可授医学、理学学位)] 1006[医学-中西医结合] 100602[医学-中西医结合临床] 10[医学] 

基　　金：National Natural Science Foundation of China(81060261) Guangxi Natural Science Foundation(2012GXNSFAA053021) Guangxi Teachers Education University Science Research Funds(2011-4) 

主　　题：Cudrania cochinchinensis isocudraniaxanthone B prenylated xanthone 1,5,6-trihydroxy-4-(1,1-dimethylallyl)-3-methoxyxanthone 1,6,7-trihydroxy-4-(1,1-dimethylallyl)-3-methoxyxanthone 

摘      要：Objective To study the chemical constituents from the root barks of Cudrania cochinchinensis. Methods The chemical constituents were isolated and purified by silica gel column chromatography. The structures of the compounds were identified on the basis of spectral data(MS,1H-NMR,13C-NMR, and 2D NMR) and by the comparison of spectroscopic data with the reported values in the literatures. Results A new xanthone, 1,6,7-trihydroxy-4-(1,1-dimethylallyl)-3-methoxyxanthone(1) and a known prenylated xanthone 1,5,6-trihydroxy-4-(1,1-dimethylallyl)-3-methoxyxanthone(isocudraniaxanthone B, 2) were isolated from the root barks of C. cochinchinensis. Conclusion Compound 1 is a new prenylated xanthone. Isomers 1 and 2 are obtained from this plant for the first time.