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

Gertraud Gruber 1 , Lydia Kerschensteiner 1  and Wolfgang Steglich 1
  • 1 Department Chemie, Ludwig-Maximilians-Universität München, Butenandtstr. 5 – 13 (Haus F), 81377 München, Germany

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.

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Zeitschrift für Naturforschung B is an international scientific journal which publishes original papers, microreviews, and letters from all areas of inorganic chemistry, solid state chemistry, coordination chemistry, molecular chemistry, and organic chemistry.

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