C. Elsworth et al., Pigments of fungi. LXII - (1S,3R)-austrocortirubin: Isolation from the fungus Dermocybe splendida and synthesis from (S)-citramalic acid, AUST J CHEM, 52(12), 1999, pp. 1115-1117
(1S,3R)-Austrocortirubin (3), a new naturally occurring red tetrahydroanthr
aquinone, is isolated from the ethanol extract of the fungus Dermocybe sple
ndida and its structure and stereochemistry are deduced by spectroscopic an
d chemical methods and are confirmed by synthesis from (S)-citramalic acid
(10).