Summary
The red anthraquinone derivative isolated from several Drechslera and Curvularia species has been identified as cynodontin (1,4,5,8-tetrahydroxy-2-methylanthraquinone), and not as 1,4,5,8-tetrahydroxy-2,6-dimethylanthraquinone as reported earlier. Both pigments showed similar physico-chemical properties. A good distinction could be obtained by gas-liquid chromatography.
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van Eijk, G.W., Roeymans, H.J. Cynodontin, the tetrahydroxyanthraquinone ofCurvularia andDrechslera species. Experientia 33, 1283–1284 (1977). https://doi.org/10.1007/BF01920135
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DOI: https://doi.org/10.1007/BF01920135