摘要
The fruiting bodies of Ganoderma sinensis are used as food raw materials of marketed healthcare products. To gain an insight into the chemical and biological profling of G. sinensis, twenty-five compounds including eleven undescribed ones (ganodermasines A-K) and fourteen known ones were isolated. Among them, ganodermasines A-D are undescribed diketopiperazine alkaloids, ganodermasines E and F are alkaloids containing a pyridine. The structures of undescribed compounds were identified by spectroscopic, computational, and crystallographic methods. The results of acetylcholinesterase (AchE) inhibitory activity show that ganodermasines I and J could inhibit AchE with IC50 values of 26.05 and 20.40 mu M, respectively. In addition, neurotrophic assay in PC-12 cells showed that (+)-ganodermasine E, (-)-ganodermasine E, and ganodermasine I could stimulate neurite outgrowth at 10 mu M, while the other isolates are inactive. The present findings will lend a hand for further utilization of G. sinensis.
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单位南方医科大学; 韩山师范学院