Extractives from Guttiferae. Part XII. The isolation and structure of seven xanthones from Calophyllum fragrans Ridley
- 1 January 1969
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Journal of the Chemical Society C: Organic
- No. 11,p. 1567-1571
- https://doi.org/10.1039/j39690001567
Abstract
Six xanthones: euxanthone, buchanaxanthone, 1,5,6-trihydroxyxanthone, 6-desoxyjacareubin, jacareubin, and 2-(3,3-dimethylallyl)-1,3,5,6-tetrahydroxyxanthone, have been isolated from the heartwood of Calophyllum fragrans Ridley. By methylation of the crude extracts, 8-hydroxy-1,2-dimethoxyxanthone has been isolated and 1,3,5,6- and 1,3,6,7-tetramethoxyxanthones were detected by t.l.c.Keywords
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