Hispidin is a phenolic compound from Phellinus linteus (a medicinal mushroom) and a potent inhibitor of protein kinase Cβ(PKC) with an IC50 of 2 μM, respectively. It also inhibits beta-secretase (BACE1) and prolyl endopeptidase(PE) with IC50 values of 4.9 μM and 16 μM respectively. It exhibits strong anti-oxidant, anti-cancer, anti-diabetic, anti-dementia, anti-inflammatory, anti-apoptotic, and antiviral properties.