Studies on annelated 1,4-benzothiazines and 1,5-benzothiazepines. XI. Synthesis and biological activity of several naphtho- and quinolino-1,4-thiazine and -1,4-thiazepine derivatives containing the imidazole ring

Several derivatives of naphtho[1,2-b]imidazo[1',2'-d]-1,4-thiazine and -1,4-thiazepine and imidazo[1',2'-d]-1,4-thiazino[3,2-c]quinoline and -1,4-thiazepino[3,2-c]quinoline have been synthesized. These compounds and other imidazo[2,1-d][1,5]benzothiazepine derivatives, previously synthesized, have been tested for their possible pharmacological activities. One of these substances displayed inhibitory activity on CNS, others showed an appreciable antiinflammatory effect. None of the naphtho and quinolino derivatives showed affinity for the benzodiazepine receptor