1
|
Cheng ZY, Sun X, Liu P, Lin B, Li LZ, Yao GD, Huang XX, Song SJ. Sesquiterpenes from Echinacea purpurea and their anti-inflammatory activities. Phytochemistry 2020; 179:112503. [PMID: 32919289 DOI: 10.1016/j.phytochem.2020.112503] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2020] [Revised: 08/15/2020] [Accepted: 08/23/2020] [Indexed: 06/11/2023]
Abstract
Six unreported sesquiterpenes, purpureaterpenes A‒F, together with six known sesquiterpenes, were isolated and identified from the aerial part of Echinacea purpurea. Their chemical structures were established by detailed analyses of 1D and 2D NMR data. The relative configurations were assigned on the basis of their NOESY spectra and the calculated 13C NMR spectra. Their absolute configurations were determined by X-ray crystallographic analyses and optical rotation calculations. All the isolated compounds were tested for their anti-inflammatory effects against NO production in LPS-induced RAW246.7 macrophages. Among these compounds, purpureaterpene E was the most active (IC50 value 13.27 μM), even better than the positive control, minocycline (IC50 value 34.81 μM). Further investigation found that purpureaterpene E might exert anti-inflammatory property via the NF-κB signaling pathway.
Collapse
Affiliation(s)
- Zhuo-Yang Cheng
- Key Laboratory of Computational Chemistry-Based Natural Antitumor Drug Research and Development, Liaoning Province, School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang, 110016, China
| | - Xue Sun
- Key Laboratory of Computational Chemistry-Based Natural Antitumor Drug Research and Development, Liaoning Province, School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang, 110016, China
| | - Ping Liu
- College of Pharmacy, Zunyi Medical College, Zunyi, 563003, People's Republic of China
| | - Bin Lin
- School of Pharmaceutical Engineering, Shenyang Pharmaceutical University, Shenyang, 110016, People's Republic of China
| | - Ling-Zhi Li
- Key Laboratory of Computational Chemistry-Based Natural Antitumor Drug Research and Development, Liaoning Province, School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang, 110016, China
| | - Guo-Dong Yao
- Key Laboratory of Computational Chemistry-Based Natural Antitumor Drug Research and Development, Liaoning Province, School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang, 110016, China
| | - Xiao-Xiao Huang
- Key Laboratory of Computational Chemistry-Based Natural Antitumor Drug Research and Development, Liaoning Province, School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang, 110016, China; Chinese People's Liberation Army 210 Hospital, Dalian, 116021, People's Republic of China
| | - Shao-Jiang Song
- Key Laboratory of Computational Chemistry-Based Natural Antitumor Drug Research and Development, Liaoning Province, School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang, 110016, China.
| |
Collapse
|