Accessible Unlicensed Requires Authentication Published by De Gruyter June 2, 2014

Chromapedic Acid, Pulvinic Acids and Acetophenone Derivatives from the Mushroom Leccinum chromapes (Boletales)

Gertraud Gruber, Lydia Kerschensteiner and Wolfgang Steglich

The pigment responsible for the bright-yellow color of the stalk bases of Leccinum chromapes is methyl isoxerocomate, which is accompanied by lesser amounts of isoxerocomic acid and atromentic acid. In addition, 4ʹ-hydroxy- and 3ʹ,4ʹ-dihydroxyacetophenone, previously unreported as metabolites of Basidiomycetes, were isolated. The pink color of the cap skin is due to variegatorubin. This pigment is accompanied by chromapedic acid, a g-butenolide of biosynthetic interest representing a new dimerization mode of 4-hydroxyphenylpyruvic acid in Boletales.

Graphical Abstract

 Chromapedic Acid, Pulvinic Acids and Acetophenone Derivatives from the Mushroom Leccinum chromapes (Boletales)

Chromapedic Acid, Pulvinic Acids and Acetophenone Derivatives from the Mushroom Leccinum chromapes (Boletales)

Received: 2013-12-2
Published Online: 2014-6-2
Published in Print: 2014-4-1

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