Two new neolignans, piperkadsin A (1) and piperkadsin B (2), as well as 11 known neolignans, three known alkaloids, the highly oxygenated compound (+)-crotepoxide, and stigmasterol were isolated from the stems of Piper kadsura. The anti-inflammatory activities of these compounds were evaluated.
Ethnopharmacological relevance: Kadsura heteroclita stem (KHS) is a well-known hepatoprotective Tujia ethnomedicine (folk named Xuetong), has long been used for the prevention and treatment of hepatitis and liver diseases.
OBJECTIVE
The aim was to determine the chemical composition of the essential oil of Kadsura longipedunculata and the biological activity of the oil and its major components.
METHODS
The essential oil from stem bark of Kadsura longipedunculata was analysed by capillary gas chromatography (GLC/FID)
Ethnopharmacological relevance: Kadsura heteroclita (Roxb.) Craib (traditionally known as "Xue Tong") is an important member of the economically and medicinally important plant family Schisandraceae. "Xue Tong" is an imperative ingredient