Abstract
AimIn the present study ten dibenzothiazepines with a methylene bridge between tricyclic nucleus and the substituent at C-11 were synthesized in order to investigate their antipsychotic activity. Some of the derivatives showed significant activity. MethodsThe title compounds were synthesized by condensation of 11-piperazinyl-dibenzothiazepine with the substituted benzyl halides in presence of triethylamine and 1,4-dioxane. The structures of the derivatives were elucidated by spectral analysis. The antipsychotic activity of the synthesized derivatives was evaluated using haloperidol induced catalepsy and lithium induced head twitches. ResultsIn SSP-9 treated group, maximum catalepsy was noted 30 min after haloperidol. Lithium induced 40.2 ± 1.655 head twitches in 1 h. Clozapine (5 mg per kg) and SSP-9 (5 mg per kg) reduced the number of head twitches to 10 ± 0.7071 and 14.8 ± 0.8602, respectively. ConclusionThe results demonstrated that the derivative SSP-9 possesses significant in vitro antipsychotic activity when compared with standard clozapine. Therefore, compound SSP-9 prototype could be considered as novel antipsychotic agent for further developing new atypical antipsychotics.
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