New fungal anthraquinones

Abstract

The 1-O-methyl ethers 2 and 11 of physcion and emodin, respectively, and emodin anthrone 13 are isolated for the first time from Basidiomycotina. They are found, along with the parent quinones 1 and 10, the tetrahydroanthraquinones (S)-atrochrysone 8 and (S)-torosachrysone 9, a mixture of atropisomeric flavomannin 6,6′-di-O-methyl ethers 4, and the rare anthraquinone fallacinol 7, from among a group of Australian and New Zealand toadstools belonging to the genus Dermocybe.