Atromentic acid

Besides atromentic acid, xerocomic acid, and variegatic acid a number of less common pulvinic acid derivatives have been isolated from Basidiomycetes (Table 11). 

The fruiting bodies of Pulveroboletus auriflammeus collected in Japan contain a series of extensively methylated atromentic acid and xerocomic acid derivatives, several of them in chlorinated form 474). The presence of traces of a chlorinated xerocomic acid had been noted before in sporophores of Xerocomus chrysenteron 607). 

Scheme 5) this procedure too constitutes an attractive alternative to the classical route to pulvinic acids, e.g. for the synthesis of specifically C-labelled atromentic acid (Scheme 13) (366),... 

Singh, P., and M. Anchel Atromentic Acid from Clitocybe illudens. Phytochem. 10, 3259 (1971). 

Variegatic and xerocomic acids co-occur with atromentic acid (57) in Xerocomus chrysenteron 56), and atromentic acid has also been isolated from cultures of the mushrooms Paxillus atrotomentosus 61), Clitocyre illudens 64) and Leccinum aurantiacum 65). 

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