6-Substituted and 2-chloro-6-substituted 10-piperazino-10,11-dihydrodibenzo[b,f]thiepins as potential antidepressants; Synthesis and pharmacology

Abstract

6-Substituted and 2-chloro-6-substituted 10-chloro-10,11-dihydrodibenzo[b,f]thiepins XIIIa - f were reacted with 1-(ethoxycarbonyl)piperazine and the carbamates IIIa - f obtained were hydrolyzed to the title compounds Ia -f. The new chlorides XIIIa - c were obtained from 2-(2-aryl-thiophenyl)acetic acids VIIIa - c via ketones XIa - c and alcohols XIIa - c. Reactions of the chlorides XIIIa and XIIIc with 1-methylpiperazine afforded compounds IIa and IIc. All compounds I are devoid of antireserpine and cataleptic activity; they are neither typical antidepressants nor neuroleptics.