Chemical constituents from the roots of Goniothalamus cheliensis Chemical constituents from the roots of Goniothalamus cheliensis Chemical constituents in endophytic fungus Verticillium sp. KY-18 isolated from Dendrobium officinale Advances in chemical and pharmacological studies on Kava Piper methysticum Isolation and Identification of Cheliensisamine from the Bark o f Goniothalamus cheliensis