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Chemical constituents from Qianliang tea

Qian Liu, Jun Li, Xingyun Chai, Yong Jiang, Pengfei Tu*   

  1. 1. State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University Health Science Center, Beijing 100191, China
    2. Modern Research Center for Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing 100029, China
  • Received:2012-12-28 Revised:2013-02-26 Online:2013-09-15 Published:2013-09-15
  • Contact: Pengfei Tu*

Abstract:

Ten compounds were isolated from Qianliang tea, a kind of dark tea fully fermented from the leaves of Camellia sinensis (L.) O. Kuntze var. sinensis, and identified as N-(2-hydroxyphenyl)-2-pyrrolidinone (1), p-hydroxyacetophenone (2), salicifoliol (3), (-)-3-hydroxy-β-ionone (4), p-hydroxy ethyl cinnamate (5), ethyl 4-(sulfooxy)benzoate (6), (+)-matairesinol (7), (-)-pinoresinol (8), (+)-lirioresinol-A (9), and caffeine (10), among which compound 1 was isolated as a new natural product, and compound 6 was isolated from Theaceae family for the first time. Compounds 3, 4, 5, 7, 8, and 9 were isolated from this species for the first time.

Key words: Qianliang tea, Camellia sinensis, Alkaloids, Phenolic derivatives, Lignans

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