Two new sterols, columnaristerols B () and C (), along with two known analogues, 5,6-epoxylitosterol () and litosterol (), were obtained from the octocoral . The structures of new sterols and were elucidated by using spectroscopic methods and comparing the spectroscopic data with those of known related metabolites. Sterol was found to suppress superoxide anion production and elastase secretion by human neutrophils.
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http://dx.doi.org/10.3390/md15070212 | DOI Listing |
Mar Drugs
July 2017
Graduate Institute of Marine Biology, National Dong Hwa University, Pingtung 944, Taiwan.
Two new sterols, columnaristerols B () and C (), along with two known analogues, 5,6-epoxylitosterol () and litosterol (), were obtained from the octocoral . The structures of new sterols and were elucidated by using spectroscopic methods and comparing the spectroscopic data with those of known related metabolites. Sterol was found to suppress superoxide anion production and elastase secretion by human neutrophils.
View Article and Find Full Text PDFA new marine sterol, 4a-methylergosta-22(E),24(28)-dien-3 P-ol (1), was isolated from the octocoral Nephthea columnaris. The structure of I was elucidated on the basis of spectroscopic and mass spectrometric methods.
View Article and Find Full Text PDFBioorg Med Chem Lett
October 2016
Graduate Institute of Marine Biology, National Dong Hwa University, Pingtung 944, Taiwan; National Museum of Marine Biology and Aquarium, Pingtung 944, Taiwan; Department of Marine Biotechnology and Resources, National Sun Yat-sen University, Kaohsiung 804, Taiwan; Chinese Medicine Research and Development Center, China Medical University Hospital, Taichung 404, Taiwan; Graduate Institute of Natural Products, Kaohsiung Medical University, Kaohsiung 807, Taiwan. Electronic address:
Columnaristerol A (1), a rare natural 19-norsterol possessing a 10β-hydroxy group was isolated from the Formosan octocoral Nephthea columnaris, and its structure was elucidated by spectroscopic methods. Sterol 1 was found to be a cytotoxic agent that exhibited in vitro moderate cytotoxic activity against MOLT-4 and SUP-T1 human leukemia-lymphoma cell lines.
View Article and Find Full Text PDFMolecules
July 2015
Graduate Institute of Marine Biology, National Dong Hwa University, Pingtung 94450, Taiwan.
Two new 15-hydroxycembranoid diterpenes, 2β-hydroxy-7β,8α-epoxynephthenol (1) and 2β-hydroxy-11α,12β-epoxynephthenol (2), were isolated from extracts of the octocoral Nephthea columnaris along with a new natural cembrane, epoxynephthenol (3) and a known sterol, nephalsterol A (4). The structures of cembranes 1-3 were elucidated by spectroscopic methods and comparison of the spectroscopic data with those of related analogues. The cytotoxicity of metabolites 1-4 against a panel of tumor cells is also described.
View Article and Find Full Text PDFLipids
June 2015
A.V. Zhirmunsky Institute of Marine Biology, Far-Eastern Branch of the Russian Academy of Sciences, 17 Palchevskogo str., Vladivostok, 690041, Russian Federation,
The soft corals of the genus Xenia are common for Indo-Pacific reef ecosystems. Lipid class, fatty acid (FA), phospho- and phosphonolipid molecular species compositions were identified for the first time in the soft coral Xenia sp. from Vietnam.
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