Synthesis and neuropharmacology of cyclobutanecarboxylic acid derivatives

Urea, hydrazide and amide derivatives of cyclobutanecarboxylic acid have been examined for central nervous systems depressant properties, potentiation of barbiturate induced sleep, myorelaxant, antitremorine and anticonvulsant activity. The urea derivatives have central nervous system depressant qualities while the hydrazines and heterocyclic amides are either inactive or have central nervous system excitatory properties. N,N'-o-methoxybenzylidenebiscyclobutanecarboxamide and 1,3-dicyclo-butanecarbonyl-2-thiourea are myorelaxant; 1-cyclobutanecarbonyl-3-allylurea antagonizes Metrazol induced convulsions; 1,3-dicyclobutanecarbonyl-2-thiourea and N-cyclobutanecarbonyl morpholine antagonizes tremorine induced tremors.