PiperidinesReceptors, PhencyclidinePipecolic AcidsReceptors, sigmaStereoisomerismMolecular StructurePhencyclidineCyclizationStructure-Activity RelationshipDiphenylacetic AcidsAminationHeterocyclic Compounds, Bridged-RingImino SugarsAlkaloidsOrganosilicon CompoundsPyrrolidinesLobelineHaloperidolAmino AlcoholsMolecular ConformationPacific StatesMagnetic Resonance SpectroscopyHeterocyclic Compounds, 2-RingAlkenesReceptor, Muscarinic M1Pinus ponderosaReceptors, NeurotransmitterRadioligand AssayMonoacylglycerol LipasesDioxolanesPiperidonesBenzylidene CompoundsDose-Response Relationship, DrugN-MethylaspartatePiperazinesPhenazocineCadaverineDioxolesKineticsPepstatinsChromatography, High Pressure LiquidReceptors, OpioidBenzodioxolesMuscarinic AgonistsCatalysisLigandsModels, ChemicalAlkylationPapaverineModels, MolecularMolecular Sequence DataBinding SitesReceptors, N-Methyl-D-AspartateDizocilpine MaleateBiotransformationHydroxyl RadicalGuinea PigsReceptor, Serotonin, 5-HT2AReceptors, MuscarinicBinding, CompetitivePhotochemistryBase SequenceDNAOxidation-ReductionMass SpectrometryMicrosomes, LiverEnzyme InhibitorsCHO CellsFentanylCricetinaeRats, Sprague-DawleyGuanineAspartic AcidProtein BindingInjections, Intra-Arterial2-Amino-5-phosphonovalerateRats, WistarCrystallography, X-RayHematoporphyrin DerivativeAmino AcidsExcitatory Amino Acid AntagonistsMuscarinic AntagonistsIndicators and ReagentsRats, Inbred StrainsBrainVertebral ArteryPyridinesTime FactorsCytochrome P-450 Enzyme SystemSpectrophotometry, UltravioletReceptors, AMPAInjections, IntravenousChemistryInhibitory Concentration 50NeuronsCells, CulturedChemical PhenomenaAspartic Acid EndopeptidasesAcetylcholineEscherichia coli