J Nat Prod 2007 May 01;705:869-71. doi: 10.1021/np060601p.

Bioactive constituents from the marine crinoid Himerometra magnipinna.

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A new tetrabromospirocyclohexadienylisoxazole, (+)-12-hydroxyhomoaerothionin (1), together with the known compounds (+)-aerothionin (2) and crinemodin-rhodoptilometrin bianthrone (3), were isolated from the marine crinoid Himerometra magnipinna, which had been collected in the South China Sea, Malaysia. The structure of 1 was elucidated by interpretation of 1D 1H and 13C NMR spectra and 2D 1H-1H COSY, HMQC, and HMBC spectra. This is the first report of tetrabromospirocyclohexadienylisoxazole compounds from a crinoid of Himerometra. Compounds 1-3 were evaluated for their inhibitory activity with the hyphae formation inhibition assay in Streptomyces 85E.

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Genes referenced: LOC100887844 LOC593824