AlkaloidsErgot AlkaloidsIndole AlkaloidsPyrrolizidine AlkaloidsVinca AlkaloidsCinchona AlkaloidsBerberine AlkaloidsMolecular StructureAmaryllidaceae AlkaloidsAconitumPlant ExtractsAporphinesClavicepsStereoisomerismStructure-Activity RelationshipCatharanthusBenzylisoquinolinesMagnetic Resonance SpectroscopyBerberineSolanaceous AlkaloidsSulfur CompoundsChromatography, High Pressure LiquidPlants, MedicinalRutaceaeDrug Evaluation, PreclinicalNeotyphodiumAortographyPlant PoisoningHeterocyclic Compounds with 4 or More RingsInhibitory Concentration 50Volatile Organic CompoundsPhenolsErgotamineErgotismRubiaceaeOrganotin CompoundsLycopodiumPoriferaPlant BarkHeterocyclic CompoundsSpiro CompoundsGas Chromatography-Mass SpectrometryLysergic AcidSELEX Aptamer TechniquePapaverCyclizationHarmineDrug DesignEphedraDiterpenesBelladonna AlkaloidsMolecular ConformationSpectrophotometry, InfraredSpectrophotometry, UltravioletMass SpectrometryIndicators and ReagentsAspidospermaNitrogen CompoundsPapaveraceaePlant LeavesKineticsAntineoplastic AgentsBiological ProductsChromatography, Thin LayerAnnonaceaeSmall Molecule LibrariesEphedrineHydrocarbons, AromaticTerpenesPolycyclic CompoundsErgolinesDrug DiscoveryUncariaFuransSulfhydryl CompoundsOxidation-ReductionEnzyme InhibitorsOpiumAntineoplastic Agents, PhytogenicRauwolfiaSenecioHypocrealesLiliaceaePlant RootsPhytotherapyHydrocarbons, HalogenatedOrganometallic CompoundsModels, MolecularCell Line, TumorSpectrometry, Mass, Electrospray IonizationVeratrum AlkaloidsBiphenyl CompoundsIndolesCarbolinesAminesBiotransformationAconitineVolatilizationHeterocyclic Compounds, 3-RingIsoquinolines