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Issue 0, 1967
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Extractives from Guttiferae. Part VII. The isolation and structure of seven xanthones from Calophyllum scriblitifolium Henderson and Wyatt-Smith

B. Jackson,  H. D. Locksley  and  F. Scheinmann 

Abstract

Two xanthones, 6-desoxyjacareubin and osajaxanthone, have been isolated from the heartwood of Calophyllum scriblitifolium Henderson and Wyatt-Smith. Methylation of a crude extract led to the isolation of the methyl ethers of another five hydroxyxanthones, 2-(3,3-dimethylallyl)-1,3,5-trihydroxyxanthone, 2-(3,3-dimethylallyl)-1,3,7 trihydroxyxanthone, 2-(3,3-dimethylallyl)-1,3,5,6-tetrahydroxyxanthone, jacareubin, and 1,5,6-trihydroxyxanthone. The biogenetic implication of the co-occurrence of these metabolites is discussed. The value of solvent shifts in assigning the structures of pyranoxanthones is assessed.

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Article type: Paper
DOI: 10.1039/J39670002500
Citation: J. Chem. Soc. C, 1967,0, 2500-2507
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    Extractives from Guttiferae. Part VII. The isolation and structure of seven xanthones from Calophyllum scriblitifolium Henderson and Wyatt-Smith

    B. Jackson, H. D. Locksley and F. Scheinmann, J. Chem. Soc. C, 1967, 0, 2500
    DOI: 10.1039/J39670002500

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