Constituents from Chimonanthus praecox (wintersweet)

► We investigated the 90% EtOH extracts of the fruits and leaves of Chimonanthus praecox. ► One new and seven known sesquiterpenoids, four dimeric tryptaminerelated alkaloids and six glycosides have been identified. ► Sesquiterpenoids were isolated from this plant for the first time. ► The purified chimonanthine-type alkaloids were found to have cytotoxicities against human cancer cells.