PyrrolesCalixarenesNylonsMolecular StructurePorphyrinsDistamycinsHexanesBenzaldehydesPyrrolizidine AlkaloidsMagnetic Resonance SpectroscopyPalladiumMonocrotalineStructure-Activity RelationshipCyclizationStereoisomerismIminesHeterocyclic CompoundsAlkylationFuransHexanonesCatalysisMolecular ConformationRhodiumPyrrolnitrinNetropsinModels, MolecularBile Pigments