Cyclopentanoid monoterpenes from the whole plant of Rehmannia piasezkii maxim
2022
Zhou, Jie | Shi, Guoru | Zhang, Wanqi | Li, Li | Chen, Ruoyun | Liu, Yanfei | Yu, Dequan
Twelve undescribed cyclopentanoid monoterpenes, Jiopiasins A–K and 6-epi-rehmaglutin A, and 19 known compounds were isolated from the whole plant of Rehmannia piasezkii Maxim. The structures of these compounds, especially their absolute stereochemistry, were established by extensive spectroscopic analysis, various quantum chemical calculations, and/or X-ray diffraction analyses. Furthermore, in vitro assays, some compounds exhibited moderate hepatoprotective activities against N-acetyl-p-aminophenol (APAP)-induced HepG2 cell damage.
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