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Planta Med 2012; 78(17): 1881-1884
DOI: 10.1055/s-0032-1315384
Natural Product Chemistry
Letters
Georg Thieme Verlag KG Stuttgart · New York

Indole Alkaloids from Kopsia hainanensis and Evaluation of Their Antimicrobial Activity

Yong Yang
1   Hainan Key Laboratory for Research and Development of Natural Products from Li Folk Medicine, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou, Hainan, P. R. China
2   Horticultural and Garden College, Hainan University, Haikou, Hainan, P. R. China
,
Wen-Jian Zuo
1   Hainan Key Laboratory for Research and Development of Natural Products from Li Folk Medicine, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou, Hainan, P. R. China
,
You-Xing Zhao
1   Hainan Key Laboratory for Research and Development of Natural Products from Li Folk Medicine, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou, Hainan, P. R. China
,
Wen-Hua Dong
1   Hainan Key Laboratory for Research and Development of Natural Products from Li Folk Medicine, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou, Hainan, P. R. China
,
Wen-Li Mei
1   Hainan Key Laboratory for Research and Development of Natural Products from Li Folk Medicine, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou, Hainan, P. R. China
,
Hao-Fu Dai
1   Hainan Key Laboratory for Research and Development of Natural Products from Li Folk Medicine, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou, Hainan, P. R. China
› Author Affiliations
Further Information

Publication History

received 19 May 2012
revised 07 August 2012

accepted 22 August 2012

Publication Date:
21 September 2012 (online)

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Abstract

Three new indole alkaloids, named kopsihainin D (1), kopsihainin E (2), and kopsihainin F (3), along with nine known compounds (4–12) were isolated from the twigs of Kopsia hainanensis. The structures of the new compounds were elucidated by spectroscopic methods including HRESIMS, UV, IR, and NMR. Compounds 1 – 3 and 5 showed inhibitory activity against Staphylococcus aureus with an antibacterial circle diameter of 11.2, 9.1, 10.3 and 9.7 mm, respectively.

Key words

Kopsia hainanensis - Apocynaceae - indole alkaloids - antimicrobial activity

Supporting Information

 

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