Six new sesquiterpenes have been isolated from the culture medium of the fungus Poronia punctata. Punctaporonins A, D, E, and F are isomeric allylic alcohols possessing a tricyclic carbon skeleton not previously found in nature. Punctaporonin B is a related trihydroxycaryophyllene isomer, and punctaporonin C is a novel tetracyclic hemisuccinate. An additional major metabolite has been identified as (E)-methyl 3-(4-methoxyphenoxy)propenoate.
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Anderson et al. (1988) studied this question.