10-(Alkylamino)-4H-thieno[3,4-b][1,5]benzodiazepines. A novel class of potential neuroleptic agents

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Abstract
An intensive study of the structural requirements for CNS activity of the title compounds was undertaken. A synthesis of the precursor dihydro-10H-thieno[3,4-b][1,5]benzodiazepin-10-ones was achieved and 3 routes for their conversion to the title compounds were developed. The compounds were tested for neuroleptic activity by the blockade of d-amphetamine lethality in aggregated mice and/or effects on locomotor activity in rats. Antidepressant activity was examined using inhibition of tetrabenazine-induced depression in mice. Most compounds were potent neuroleptic agents; several exhibited additional antidepressant activity.

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