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Sesquiterpenoids from Ixeris sonchifolia and their neuroprotective activities.

Yan YuanZhuo-Fan HuFeng-Li WangLuo-Sheng WanYing GongJia-Chun Chen
Published in: Journal of Asian natural products research (2021)
The phytochemical investigation of the methanol extract of Ixeris sonchifolia led to the isolation and identification of nine analogs, including one new guaiane-type sesquiterpenoid, named ixerinoid A ( 1 ). The structure of 1 was determined by extensive analysis of the 1 D and 2 D nuclear magnetic resonance spectroscopic data, as well as quantum chemical calculations. Additionally, all the isolates were tested for their neuroprotective activity using the oxygen-glucose deprivation/reperfusion-induced SH-SY5Y cell injury model. Compounds 3 , 5 , 6 , 8 , and 9 displayed remarkable protective effects at concentrations of 1, 5, and 10  μ M, respectively.
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