Summary
By condensing chrysophanic acid with nitrogen-containing substances, derivatives substituted at the carbonyl and hydroxyl-group positions have been obtained. Substance IIa possess antitumor activity.
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Khimiya Prirodnykh Soedinenii, Vol. 1, No. 5, pp. 360–363, 1965
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Chumbalov, T.K., Muzychkina, R.A. Reactions of natural anthraquinone pigments. Chem Nat Compd 1, 283–285 (1965). https://doi.org/10.1007/BF00563706
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DOI: https://doi.org/10.1007/BF00563706