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Get Free AccessThuwalallenes A-E (1-3, 5 and 8) and thuwalenynes A-C (4, 6, 7), new C15 acetogenins featuring uncommon ring systems, along with cis-maneonene D (9), thyrsiferol (10) and 23-acetyl-thyrsiferol (11) were isolated from the organic extract of a population of the red alga Laurencia sp., collected at Rose Reef off the village of Thuwal in the Red Sea waters of the Kingdom of Saudi Arabia. The structure elucidation of the isolated natural products was based on extensive analysis of their spectroscopic data. Compounds 1-6, 8, 10 and 11 were evaluated for their anti-inflammatory activity by quantifying nitric oxide (NO) release in response to TLR4 stimulation in macrophages. Besides compound 4 that did not exhibit any activity, all other tested metabolites inhibited NO production from activated macrophages. Among them, thyrsiferol (10) and 23-acetylthyrsiferol (11) displayed activity with IC50 values in the low nM scale without cytotoxicity.
Aikaterini Koutsaviti, Maria Daskalaki, Susana Agustı́, Sotirios C. Kampranis, Christos Tsatsanis, Carlos M. Duarte, Vassilios Roussis, Efstathia Ioannou (2019). Thuwalallenes A–E and Thuwalenynes A–C: New C15 Acetogenins with Anti-Inflammatory Activity from a Saudi Arabian Red Sea Laurencia sp.. , 17(11), DOI: https://doi.org/10.3390/md17110644.
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Type
Article
Year
2019
Authors
8
Datasets
0
Total Files
0
Language
en
DOI
https://doi.org/10.3390/md17110644
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