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Monoterpenoid Indole Alkaloids from Inadequately Dried Leaves of Alstonia scholaris |
Xu-Jie Qin1,2, Yun-Li Zhao1, Chang-Wei Song1, Bei Wang1,2, Ying-Ying Chen1,2, Lu Liu1,2, Qiong Li1,2, Dan Li1,2, Ya-Ping Liu1, Xiao-Dong Luo1 |
1. State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, People's Republic of China; 2. State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, People's Republic of China |
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Abstract Six new indole alkaloids, named alstoniascholarines L-Q(1-6), together with nineteen known analogues were isolated from the inadequately dried leaves of Alstonia scholaris. Their structures were elucidated on the basis of extensive analysis of spectroscopic data and by comparison of their physical and spectroscopic data with the literature values. In addition, the new alkaloids were tested for their cytotoxic and neurite outgrowth-promoting activities.
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Keywords
Alstonia scholaris
Inadequately dried leaves
Indole alkaloids
Alstoniascholarine
Bioactivities
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Fund:The authors are grateful to the Natural Science Foundation of China(81225024), Collaborative Innovation Center of Southwest EthnicMedicine(Guangxi Normal University), (CICSEM 2013-A), the Ministry of Science and Technology of the People's Republic of China(2014ZX09301307-003), and the Chinese Academy of Sciences(KSZD-EW-Z-004-03) for partial financial support. |
Issue Date: 11 February 2018
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