Summary
1. A chloroform extract of the lichenParmelia birulae has yielded the anthraquinone islandicin and the new violet pigment biruloquinone, 1,4,8-trihydroxy-2-methoxy-7-methyl-9,10-phenanthraquinone-5-carboxylic acid (5 → 4)-lactone, the first ortho-phenanthraquinone from a lichen.
2. A hexane extract of the lichenAsahinea scholanderi has yielded seven anthraquinone pigments, including: chrysophanol, islandicin, cynodontin, emodin, and 1,4,5,6(or 7),8-pentahydroxy-3-methylanthraquinone.
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Additional information
Pacific Ocean Institute of Bioorganic Chemistry, Far Eastern Scientific Center, Academy of Sciences of the USSR, Vladivostok. Translated from Khimiya Prirodnykh Soedinenii, No. 3, pp. 283–289.
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Krivoshchekova, O.E., Stepanenko, L.S., Mishchenko, N.P. et al. A study of aromatic metabolites of lichens of the family Parmeliaceae. II. Pigments. Chem Nat Compd 19, 270–274 (1983). https://doi.org/10.1007/BF00579756
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DOI: https://doi.org/10.1007/BF00579756