Abstract
Our continuous chemical study of a cultured octocoral Briareum stechei led to the isolation of four new briarane diterpenoids, briarenols Q-T (1-4). The structures of new metabolites 1-4 were established by spectroscopic methods, and compounds 3 and 4 were found to inhibit the generation of inducible nitric oxide synthase (iNOS) from RAW 264.7 stimulated by lipopolysaccharides (LPS).
Keywords:
Briareum stechei; COX-2; briarane; briarenol; iNOS.
MeSH terms
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Animals
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Anthozoa / metabolism*
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Anti-Inflammatory Agents / chemistry
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Anti-Inflammatory Agents / isolation & purification
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Anti-Inflammatory Agents / pharmacology*
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Cyclooxygenase 2 / metabolism
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Diterpenes / chemistry
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Diterpenes / isolation & purification
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Diterpenes / pharmacology*
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Lipopolysaccharides / pharmacology
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Macrophages / drug effects*
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Macrophages / enzymology
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Mice
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Molecular Structure
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Nitric Oxide / metabolism
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Nitric Oxide Synthase Type II / metabolism
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RAW 264.7 Cells
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Structure-Activity Relationship
Substances
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Anti-Inflammatory Agents
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Diterpenes
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Lipopolysaccharides
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Nitric Oxide
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Nitric Oxide Synthase Type II
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Nos2 protein, mouse
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Ptgs2 protein, mouse
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Cyclooxygenase 2