HETEROCYCLES
An International Journal for Reviews and Communications in Heterocyclic ChemistryWeb Edition ISSN: 1881-0942
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Note | Regular issue | Vol 45, No. 10, 1997, pp.2045-2052
Published online, 1st January, 1970■ Three New Coumarins from Calophyllum teysmannii var. inophylloide (Guttiferae)
Published online, 1st January, 1970
DOI: 10.3987/COM-97-7901
■ Three New Coumarins from Calophyllum teysmannii var. inophylloide (Guttiferae)
Shu-Geng Cao, Keng-Yeow Sim, and Swee-Hock Goh*
*Department of Chemistry, National University of Singapore, 10 Kent Ridge Crescent, 119260, Singapore
Abstract
A chemotaxonomic survey of Malaysian Calophyllum plants for potential bioactive compounds provided three new coumarins [12-methoxyinophyllum P (1), hydrohydroxyisocalanone (2) and 4-phenyl-5-methoxy-7-hydroxy-8-benzoylcoumarin (3)] from the bark of C. teysmannii var. inophylloide, together with known compounds calanone (4) and betulinic acid. Their structures were determined by spectroscopic analysis including 2D NMR.
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