Journal
JOURNAL OF NATURAL PRODUCTS
Volume 83, Issue 4, Pages 1005-1017Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.jnatprod.9b00929
Keywords
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Funding
- National Natural Science Foundation of China [81573310]
- Natural Science Foundation of Guangdong Province [2019A1515012138]
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Eighteen new jatrophane diterpenoids, euphoesulatins A-R (1-18), and three known diterpenoids (19-21) were isolated from Euphorbia esula. Compounds 1-7, 14, and 18 represent a rare type of jatrophane-type diterpenoid containing a nicotinoyloxy group. The absolute configuration of 1 was determined by X-ray crystallography. The compounds were assayed for their antiosteoporotic activity in a bone-marrow-derived macrophage cell line, and compounds 1, 8, and 10 significantly inhibited the formation of osteoclasts, with IC50 values of 1.2, 3.5, and 2.3 mu M, respectively. These three compounds also dosedependently reduced the activity of nuclear factor activated T-cell cytoplasmic 1. This study reveals the antiosteoporotic effects of jatrophane diterpenoids for the first time.
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