Journal
FITOTERAPIA
Volume 139, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.fitote.2019.104372
Keywords
Artemisia argyi; Compositae; Sesquiterpenoids; COX-1; COX-2
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Funding
- National Natural Science Foundation of China [31400305, 81773898]
- High educated talents fund of Xinxiang Medical University [505013]
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Four new sesquiterpene lactones, named artemargyinolides A-D (1-4), and seven known sesquiterpenoids (5-11) were isolated from Artemisia argyi. Their structures were elucidated based on the extensive analysis of spectroscopic data. The absolute configuration of 1 was assigned by X-ray crystallographic analysis. Compound 1 is an unprecedented sesquiterpene dimer-monoterpene lactone. The cyclooxygenases (COX-1 and COX-2) inhibitory activities of all isolated compounds were evaluated. Compounds 1, 2, 4, and 6-11 showed inhibitory activity against COX-2 with IC50 values ranging from 35.78 +/- 0.39 to 256.07 +/- 0.38 mu M. However, compounds 7, 9, and 10 exhibited weak inhibitory activity against COX-1 with IC50 values of 465.70 +/- 1.53, 281.43 +/- 3.56, and 490.45 +/- 6.07 mu M, respectively. Other compounds are inactive against COX-1. Therefore, compounds 1, 2, 4, 6, 8, and 11 displayed selective COX-2 inhibitory activity.
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