Synthesis and antiinflammatory activity of 6,11-dihydro-11-oxodibenzo[b,e]thiepinalkanoic acids and related compounds

Abstract
Acetic acid derivatives of tricyclic systems, such as 6,11-dihydro-11-oxodibenzo[b,e]thiepin, 4,10-dihydro-4-oxothieno[2,3-c] [1]benzothiepin, dibenzo[b,f]thiepin, dibenz[b,f]oxepin, etc., were synthesized and assayed for anti-inflammatory activity. 6,11-Dihydro-11-oxodibenzo[b,e]thiepin-3-acetic acid, was chosen for evaluation in man on the basis of high antiinflammatory activity in short and long-term animal assays and a low gastric irritation liability in rats and dogs.