Abstract:In the western part of Hubei province we have collected a medicinal plant by the local name of "North Wuweizi". It has been identified as Schisandra incarnata. Atetrahydrofuran lignan chicanine has been isolated from the kernel of the plant. Pharmacological experiments show that S. incarnata possesses activities of lowering sGPT levels as well as prolonging the sleeping time induced by phenobarbital.