β-Amanitin, a cyclic peptide toxin found in the poisonous Amanita phalloides mushroom, inhibits eukaryotic RNA polymerase II and III, thereby disrupting protein synthesis.
Fasciculic acid B is the ester of fasciculol B and 3-hydroxy-3-methylglutaric acid. Fasciculic acid B is calmodulin antagonist from mushroom Naematoloma fasciculare.
Cardol triene is a phenol found in cashew nut shell liquid that competitively and irreversibly inhibits mushroom tyrosinase (IC50 = 22.5 μM). It is schistosomicidal, killing 25, 75, and 100% of S. mansoni worms after 24 hours when used at concentrations of 50, 100, or 200 μM, respectively. It has been used as a starting material for the synthesis of bis-benzoxazines.