A polyphenol fungal metabolite originally isolated from Alternaria that has diverse biological activities; an inhibitor of Src (IC50 = 20 nM); inhibits fibrillization of recombinant tau fragments in vitro; inhibits phosphorylation of tau in SH-SY5Y cells expressing human P301L mutant tau at 10 μM; an FXR agonist (EC50 = 3.2 μM); reduces blood glucose, serum insulin, and serum cholesterol levels, as well as hepatic lipogenic gene expression and steatosis, in a high fat diet-induced mouse model of obesity at 30 mg/kg; has antioxidant and antifungal properties