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New 8-Hydroxybriaranes from the Gorgonian Coral Junceella fragilis (Ellisellidae).


ABSTRACT: Three new 8-hydroxybriaranes-fragilides R-T (1-3) were obtained from a sea whip gorgonian coral Junceella fragilis. The structures of briaranes 1-3 were elucidated by using spectroscopic methods, including 1D (1H and 13C NMR), 2D (COSY, HSQC, HMBC, and NOESY experiments) NMR studies, and (+)-HRESIMS. Fragilides S and T (2 and 3) are the only briaranes known to possess 8?-hydroxy and 17?-methyl groups, respectively. Briarane 2 exerted an inhibition effect on iNOS release from RAW264.7; a macrophage cell line that originated from a mouse monocyte macrophage, stimulated with lipopolysaccharides.

PROVIDER: S-EPMC6780648 | BioStudies |

REPOSITORIES: biostudies

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