StephaniaAlkaloidsErgot AlkaloidsIndole AlkaloidsPyrrolizidine AlkaloidsVinca AlkaloidsCinchona AlkaloidsBerberine AlkaloidsAmaryllidaceae AlkaloidsAconitumMolecular StructureAporphinesClavicepsBenzylisoquinolinesCatharanthusDelphiniumSolanaceous AlkaloidsPlant ExtractsBerberineStereoisomerismNeotyphodiumRutaceaeCoptisPlant PoisoningStructure-Activity RelationshipMagnetic Resonance SpectroscopyErgotamineErgotismLycopodium