A New Phenolic Metabolite, Involutone, Isolated from the Mushroom Paxillus involutus

Autor:	Lucyna Mikolajczyk, Róża Antkowiak, Wieslaw Z. Antkowiak, Izabela Banczyk
Rok vydání:	2003
Předmět:	Mushroom Ethanol Chromatography biology Stereochemistry Metabolite Organic Chemistry General Chemistry General Medicine Optically active biology.organism_classification Catalysis chemistry.chemical_compound chemistry Paxillus involutus Methanol
Zdroj:	ChemInform. 34
ISSN:	1522-2667 0931-7597
DOI:	10.1002/chin.200331232
Popis:	A new optically active metabolite, involutone, was found in methanol, ethanol, or n-butanol extracts of freshly collected Paxillus involutus. The structure of this compound was proved to be 5-(3,4-dihydroxyphenyl)-2-(4-hydroxyphenyl)-2-hydroxy-4-cyclopenten-1,3-dione on the basis of the spectral and chemical properties of involutone and its tetraacetyl derivative. In addition, a number of compounds of known structures such as linoleic and crotonic acids, mannitol, ergosterol, involutin, as well as methyl, ethyl, or n-butyl-β-D-glucopyranosides, and methyl, ethyl, or n-butyl linoleates, depending in both cases on the alcohol used in the extraction, were also isolated in a pure state from the mushroom.Key words: Paxillus involutus, Brown Roll-rim, metabolite isolation, structure study, quaternary hydroxycyclopentanedione, NMR of mushroom pigments, glucosides and linoleates, enzymic glucosylation and esterification.
Databáze:	OpenAIRE
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