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Prenylated xanthones from Garcinia xanthochymus.
Wisinee Chanmahasathien1, Yushan Li, Masayuki Satake
1Graduate School of Pharmaceutical Sciences, Tohoku University, Aoba, Aramaki, Aoba-ku, Sendai 980-8578, Japan.
Chemical & Pharmaceutical Bulletin
|November 6, 2003
Summary
A novel prenylated xanthone from Garcinia xanthochymus significantly enhanced nerve growth factor-mediated neurite outgrowth in PC12D cells. This discovery offers potential for neuroregeneration research.
Area of Science:
- Natural Product Chemistry
- Neuroscience
- Pharmacology
Background:
- Garcinia xanthochymus is a source of bioactive compounds.
- Xanthones are a class of natural products with diverse biological activities.
- Neurite outgrowth is crucial for neuronal development and repair.
Purpose of the Study:
- To isolate and characterize new prenylated xanthones from Garcinia xanthochymus.
- To evaluate the effect of isolated compounds on nerve growth factor-mediated neurite outgrowth.
Main Methods:
- Isolation of compounds from Garcinia xanthochymus wood.
- Structure elucidation using spectroscopic analysis (NMR, MS).
- Assessment of neurite outgrowth in PC12D cells stimulated by nerve growth factor.
Main Results:
- A new prenylated xanthone, 1,3,5,6-tetrahydroxy-4,7,8-tri(3-methyl-2-butenyl)xanthone, was identified.
- Garciniaxanthone E, a known xanthone, was also isolated.
- Both compounds demonstrated significant enhancement of nerve growth factor-induced neurite outgrowth at tested concentrations (3 µM and 10 µM, respectively).
Conclusions:
- The novel prenylated xanthone possesses neurotrophic properties.
- Garcinia xanthochymus compounds may serve as leads for developing agents to promote neuronal regeneration.
- Further investigation into the mechanism of action is warranted.