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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
biochemistry, genetics and molecular biology
Polyoxygenated sterols from the formosan soft coral Sinularia gibberosa
Journal of Natural Products, Volume 69, No. 9, Year 2006
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Description
Chemical investigation on the dichloromethane-soluble fraction from the EtOH extract of Sinularia gibberosa Tixier-Durivault has led to the isolation of three new polyoxygenated sterols, gibberoketosterols B (1) and C (2) and gibberoepoxysterol (3), along with two known steroids, gibberoketosterol (4) and 24-methylenecholest-5-en-3β-o1 (5). These cholestane-type sterols possessing a 22,24(28)-conjugated diene (1 and 2) in the side chain or a 5α,6α-epoxide in the B-ring (3) were isolated for the first time from marine sources. Compound 4 showed significant inhibition against the up-regulation of the pro-inflammatory iNOS and COX-2 proteins of LPS-stimulated RAW264.7 macrophage cells, while 1 was found to be inactive. The cytotoxicity of 1-4 toward a limited panel of cancer cell lines is also reported. © 2006 American Chemical Society and American Society of Pharmacognosy.
Authors & Co-Authors
Ahmed, Atallah F.
Taiwan, Kaohsiung
National Sun Yat-sen University
Egypt, Mansoura
Mansoura University
Hsieh, Yating
Taiwan, Kaohsiung
National Sun Yat-sen University
Wen, Zhihong Horng
Taiwan, Kaohsiung
National Sun Yat-sen University
Wu, Yangchang
Taiwan, Kaohsiung
Kaohsiung Medical University
Sheu, Jyh-Horng Horng
Taiwan, Kaohsiung
National Sun Yat-sen University
Statistics
Citations: 57
Authors: 5
Affiliations: 3
Identifiers
Doi:
10.1021/np0601509
ISSN:
01633864
Research Areas
Cancer