期刊
BIOORGANIC & MEDICINAL CHEMISTRY
卷 13, 期 17, 页码 5253-5258出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.bmc.2005.05.064
关键词
symbioimine; neosymbioimine; iminium metabolite; inhibition of osteoclasts differentiation; COX-2
Two amphoteric iminium metabolites, symbioimine (1) and neosymbioimine (2), were isolated from a cultivated symbiotic marine dinoflagellate Symbiodinium sp. Compounds I and 2 have a characteristic 6,6,6-tricyclic iminium ring structure and an aryl sulfate moiety. The plausible biogenetic pathway of I and 2 can be explained by an intramolecular Diels-Alder reaction followed by imine cyclization. Symbioimine (1) inhibited the differentiation of RAW264 cells into osteoclasts (EC50 = 44 mu M), and significantly inhibited cyclooxygenase-2 activity at 10 mu M. Thus, symbioimine is a potent anti-resorptive and anti-inflammatory drug. (c) 2005 Elsevier Ltd. All rights reserved.
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