Elsevier

Phytochemistry

Volume 25, Issue 11, 1986, Pages 2617-2620
Phytochemistry

Xanthones and neoflavonoids from two asian species of calophyllum

https://doi.org/10.1016/S0031-9422(00)84521-5Get rights and content

Abstract

The stem barks of both Calophyllum macrocarpum and C. walkeri have yielded the known neoflavonoid apetalic acid. In addition, C. walkeri bark gave four 1,3,7-oxygenated xanthones with prenyl substituents at C-2 and C-8. One of the xanthones has been identified as thwaitesixanthone, and the other three as the related novel derivatives thwaitesixanthonol, demethylcalabaxanthone and 2″-isopropenyl-3″-hydroxydihydrofuranodemethylcalabaxanthone.

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Present address: Department of Chemistry, University of Iowa, Iowa City, IA 52242, U.S.A.

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