Coumarins fromPolygala paniculata

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Abstract
From the petrol ether and chloroform extracts of Polygala paniculata L. (Polygalaceae), possessing both molluscicidal and antifungal properties, four coumarins were isolated by flash chromatography and centrifugal thin-layer chromatography. They were identified as aurapten, phebalosin, murrangatin and 7-methoxy-8-(l,4-dihydroxy-3-methyl-2-butenyl)coumarin, a new natural product. Among these compounds phebalosin showed biological activity, but proved to be very unstable in aqueous solution.