9alpha,13alpha-Epidioxyabiet-8(14)-en-18-oic acid shows potent inhibitory effects on Epstein-Barr virus early antigen (EBV-EA) activation induced by the tumor promoter 12-O-tetradecanoylphorbol 13-acetate.
Cedrin has protective effects on PC12 cells against the neurotoxicity induced by amyloid β1-42, the protective effect is related to the inhibition of oxidative stress, improvement of mitochondrial dysfunction and suppression of apoptosis.