Graphical abstract
Four new indole alkaloids, plasiaticines A-D (1–4), together with two known ones, were isolated from the seeds of Plantago asiatica. The structures of the new compounds were elucidated on the basis of comprehensive analysis of spectroscopic data. All compounds were tested for their cytotoxic activity, and all compounds except 4 were tested for their acetylcholinesterase (AChE) inhibitory activities.

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Supplementary material is available for this article at 10.1007/s13659-012-0082-4 and is accessible for authorized users.
Keywords: Plantago asiatica, indole alkaloid, AChE inhibitory activity, cytotoxic activity
Electronic supplementary material
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Contributor Information
Wei-Lie Xiao, Email: xwl@mail.kib.ac.cn.
Han-Dong Sun, Email: hdsun@mail.kib.ac.cn.
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