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Anti-inflammatory 2-(2-phenylethyl)chromone derivatives from Chinese agarwood
- Huo, Hui-Xia, Gu, Yu-Fan, Sun, Hui, Zhang, Yun-Feng, Liu, Wen-Jing, Zhu, Zhi-Xiang, Shi, She-Po, Song, Yue-Lin, Jin, Hong-Wei, Zhao, Yun-Fang, Tu, Peng-Fei, Li, Jun
- Fitoterapia 2017 v.118 pp. 49-55
- circular dichroism spectroscopy, inhibitory concentration 50, nitric oxide, nuclear magnetic resonance spectroscopy, spectral analysis
- Five new 2-(2-phenylethyl)chromone derivatives (1–5), along with eleven known compounds (6–16) were isolated from Chinese agarwood. Their structures were elucidated by spectroscopic data (NMR, UV, IR, and MS) analyses and comparison of their spectroscopic and physical data with the literature values. The absolute configurations of 2–4 were determined by electronic circular dichroism (ECD) calculations. Compounds 2–4, 11, 12, and 15 exhibited significant inhibition of nitric oxide production in lipopolysaccharide-stimulated RAW 264.7 cells with IC50 values in the range 1.6–7.3μM.