oosporein

Chaetomidin

Iso-oosporein

3,3',6,6'-Tetrahydroxy-5,5'-dimethyl-2,2'-bi(1,4-benzoquinone)

3,3',6,6'-Tetrahydroxy-4,4'-dimethyl-1,1'-biphenyl-2,2',5,5'-tetrone

2,2',5,5'-Tetrahydroxy-4,4'-dimethyl-1,1'-bi-(1,4-cyclohexadiene)-3,3',6,6'-tetrone