ECB-ART-47898
Chem Pharm Bull (Tokyo)
2002 Dec 01;5012:1609-12. doi: 10.1248/cpb.50.1609.
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New quinone sulfates from the crinoids Tropiometra afra macrodiscus and Oxycomanthus japonicus.
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Quinone pigments in the crinoids were investigated. New quinone sulfates 1 and 3 were isolated from Tropiometra afra macrodiscus and Oxycomanthus japonicus, respectively. The structures 1 and 3 were determined to be 1,6,8-trihydroxy-3-propylanthraquinone-2-carboxylic acid 6-O-sulfate (ptilometric acid 6-O-sulfate) and 2-butanoyl-3,6,8-trihydroxy-1,4-naphtoquinone 6-O-sulfate, respectively, by chemical and spectroscopic analysis. Ptilometric acid 6-O-sulfate (1) showed an antifeedant activity on fish.
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