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Indole alkaloids from Ervatamia chinensis.
Ling-Li Guo1, Hong-Ping He, Ying-Tong Di
1State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650204, People's Republic of China.
Phytochemistry
|November 29, 2011
Summary
Four new bisindole alkaloids from Ervatamia chinensis showed significant anticancer activity. These compounds, ervachinines A-D, demonstrated cytotoxicity comparable to cisplatin against various human cancer cell lines.
Area of Science:
- Natural Product Chemistry
- Medicinal Chemistry
- Pharmacology
Background:
- Ervaatmia chinensis is a plant source of bioactive compounds.
- Bisindole alkaloids represent a class of natural products with potential therapeutic applications.
- Cytotoxicity of natural products against cancer cell lines is an active area of research.
Purpose of the Study:
- To isolate and characterize novel bisindole alkaloids from Ervatamia chinensis.
- To evaluate the in vitro cytotoxic activity of isolated compounds against human cancer cell lines.
Main Methods:
- Isolation of alkaloids using chromatographic techniques.
- Structure elucidation using 1D and 2D NMR spectroscopy.
- Determination of absolute configurations via CD exciton chirality.
- In vitro cytotoxicity assays against HL-60, SMMC-7721, A-549, MCF-7, and SW480 cell lines.
Main Results:
- Four new vobasinyl-ibogan type bisindole alkaloids, ervachinines A-D (1-4), were isolated.
- Twelve known terpenoid indole alkaloids were also identified.
- Compounds 1-6 displayed significant in vitro cytotoxicity.
- IC(50) values for active compounds were comparable to cisplatin.
Conclusions:
- Ervaatmia chinensis is a valuable source of bisindole alkaloids with potent anticancer properties.
- Ervinachines A-D represent a promising new class of cytotoxic agents.
- Further investigation into the mechanism of action and in vivo efficacy is warranted.
