12. QUINONES: STRUCTURE AND DISTRIBUTION
Fungal Benzoquionones
a (continued)
657
Polyporic acid
[Polyporus and
iPeniophora spp.
(Thelephoraceae)]
(LXXXVn)
Volucrisporin(i^)
{Volucrispora sp.)
(LXXXIX)
Atromentin
ö
[Paxillus sp.
(Agaricaceae)]
OH
Leucomelone
{Polyporus sp.)
(XC)
CO,H
(CH=CH) 2 C0 2 H
PR
OH
CO a H
Muscarufin
c
[Amanita sp.
(Agaricaceae)]
(XCI)
Thelephoric acid
[ Thelephora and Hydnum spp.,
Cantharellus sp (Agaricaceae),
Polystictus sp. (Polyporaceae) ]
(XCII)
a For references to individual species see (1), except where indicated.
& Aurantiacin (Hydnum. sp.) is the 3,6-dibenzoate (114).
c See text.
tion, it is possible that it too is present as an acylated derivative of the
leuco compound, and not simply as atromentin quinol. The structure
proposed (114) for muscarufin (XCI) is very dubious. A recent reexamination by Eugster (114a) of the red skins of Amanita muscaria
(Linn.) Fries showed that several labile, non-quinonoid, pigments were
present, and the original work of Kögl and Erxleben (114) could not be
repeated.
(LXXXVIII)