Studies on chemical constituents in fruits of Tibetan medicine Phyllanthus emblica
Zhang, L.-z.; Zhao, W.-h.; Guo, Y.-j.; Tu, G.-z.; Lin, S.; Xin, L.-g.
Zhongguo Zhong Yao Za Zhi 28(10): 940-943
2003
ISSN/ISBN: 1001-5302 PMID: 15620182 Document Number: 555076
To investigate the chemical constituents of Tibetan medicine Phyllanthus emblica. Various chromatographic techniques were employed for isolation and purification of the constituents, and the structures were elucidated by chemical and spectral analyses. 11 compounds were isolated and identified as gallic acid (I), ellagic acid (II), 1-O-galloyl-beta-D-glucose (III), 3,6-di-O-galloyl-D-glucose (IV), chebulinic acid (V), quercetin (VI), chebulagic acid (VII), corilagin (VIII), 3-ethylgallic acid (3-ethoxy-4,5-dihydroxy-benzoic acid, IX), isostrictiniin (X), 1,6-di-O-galloyl-beta-D-glucose (XI). 3-Ethylgallic acid (3-ethoxy-4,5-dihydroxy-benzoic acid) is a novel compound, and isostrictiniin was found from P. emblica for the first time.