PiperidinesReceptors, PhencyclidinePipecolic AcidsReceptors, sigmaPhencyclidineStereoisomerismCyclizationDiphenylacetic AcidsHeterocyclic Compounds, Bridged-RingImino SugarsAminationMolecular StructureAlkaloidsOrganosilicon CompoundsLobelineHaloperidolPyrrolidinesPacific StatesStructure-Activity RelationshipHeterocyclic Compounds, 2-RingAmino AlcoholsReceptor, Muscarinic M1Pinus ponderosaMonoacylglycerol LipasesReceptors, NeurotransmitterAlkenesPiperidonesDioxolanesN-MethylaspartateMolecular ConformationPhenazocineRadioligand AssayBenzylidene CompoundsPepstatinsCadaverineBenzodioxolesMuscarinic AgonistsDioxolesReceptors, OpioidPiperazinesPapaverineReceptors, N-Methyl-D-AspartateDizocilpine MaleateDose-Response Relationship, DrugReceptors, MuscarinicReceptor, Serotonin, 5-HT2AHydroxyl RadicalLigandsMagnetic Resonance SpectroscopyCatalysisFentanylModels, Chemical2-Amino-5-phosphonovalerateGuinea PigsInjections, Intra-ArterialAlkylationAspartic AcidExcitatory Amino Acid AntagonistsBiotransformationMuscarinic AntagonistsMicrosomes, LiverVertebral ArteryCHO CellsPhotochemistryGuanineBinding, CompetitiveModels, MolecularDNARats, Sprague-DawleyChromatography, High Pressure LiquidKineticsCricetinaeEnzyme InhibitorsBinding SitesBrainReceptors, AMPARats, Inbred StrainsRats, WistarBase SequenceAspartic Acid EndopeptidasesAcetylcholineInjections, IntravenousOxidation-ReductionNeuronsCrystallography, X-RayAmino AcidsPyridinesCytochrome P-450 Enzyme SystemMolecular Sequence DataMotor Activity