Journal
JOURNAL OF NATURAL PRODUCTS
Volume 72, Issue 6, Pages 994-1000Publisher
AMER CHEMICAL SOC
DOI: 10.1021/np900064a
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Funding
- Ministry of Education [96CO31702]
- National Science Council of Taiwan [NSC 95-2113-M-110-011-MY3]
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Nine new eunicellin-based diterpenoids, simplexins A-I (1-9), were isolated from a Dongsha Atoll soft coral, Klyxum simplex. The structures of these compounds were established by detailed spectroscopic analysis (IR, MS, 1D and 2D NMR) and by comparison with the physical and spectral data of related known compounds. The absolute configuration of 1 was determined by a modified Mosher's method. Compounds 1, 4, and 5 were found to be cytotoxic toward a limited panel of cancer cell fines. Compound 5 was shown to significantly inhibit the accumulation of the pro-inflammatory iNOS and COX-2 proteins in LPS-stimulated RAW264.7 macrophage cells.
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