Abstract

An ethanol extract of Lactarius vellereus gave 5,13-epoxy-3β-hydroxy-lactara-2(9),5,7(13)-trien-4,8-dione and 13-hydroxy-lactara-2,6,8-trien-5-oic acid γ-lactone, in addition to the known sesquiterpenes. The structure of the new monohydroxy-di-oxo-furan was established by spectroscopy and confirmed by single crystal X-ray diffraction. The structure of the new lactone was established by spectroscopy.

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