(1R,3R)-Austrocortilutein, (1R,3S)-austrocortilutein and (S)-1-deoxyaustrocortilutein have been isolated from Australian toadstools belonging to the genus Dermocybe; all four stereoisomers of austrocortilutein (1,2,3,4 tetrahydro-1,3,8-trihydroxy-6-methoxy-3-methyl-9,10-anthracenedione) and both enantiomers of 1-deoxyaustrocortilutein are now known as natural products.