Abstract
By the chromatographic separa t ion of the neut ra l fraction of the r e s i n of the roots of Fe ru la kara tav ica Rgl. et Schmalh. on AI~O~ we have isolated a coumar in with the composit ion C23Hz604 (M + 366), mp 141-142 ° C (ethanol), [ol]~ -77 ° (benzene), which we have called tavieone. Yield 1%. IR spec t rum in paraffin oil, cml : 1730 (ketonic CO group in a f ive -membered ring), 1705 (CO of a lactone), 830 (double bond). On acid hydrolys is , tavieone formed umbel l i ferone.
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