Synthesis and Neuroleptic Activity of 3-(1-Substituted-4-piperidinyl)-1,2-benzisoxazoles

Article abstract of DOI:10.1021/jm00383a012

The synthesis of a series of 3-(1-substituted-4-piperidinyl)-1,2-benzisoxazoles is described.The neuroleptic activity of the series was evaluated by utilizing the climbing mice assay and inhibition of <3H>spiroperidol binding.Structure-activity relationships were studied by variation of the substituent on the benzisoxazole ring with concomitant variation of four different 1-piperidinyl substituents.Maximum neuroleptic activity was realized when there was a 6-fluoro substituent on the benzisoxazole ring.The 1-piperidinyl substituent appeared less significant, although in most cases, the (1,3-dihydro-2-oxo-2H-benzimidazol-1-yl)propyl group imparted maximum potency.The most potent compound in both assays was 6-fluoro-3-<1-<3-(1,3-dihydro-2-oxo-2H-benzimidazol-1-yl)propyl>-4-piperidinyl>-1,2-benzisoxazole (11b).