From the heartwood of Mammea africana L. 5-hydroxy-1-methoxyxanthone, 1,5,6- and 1,7-dihydroxyxanthaones,1,5,6- and 1,5,6-tetrahydroxyxanthones have been 1,3,6,7-tetrahydoxyxanthone has been identified. The biogenetic implication of the co-occurrence of these metabolites is discussed.
I. Carpenter, H. D. Locksley and F. Scheinmann, J. Chem. Soc. C, 1969, 2421 DOI: 10.1039/J39690002421
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