abstract |
3,4,7,8-Tetahydro-2H,5H-thiopyrano[4,3-b]pyrans of the structure <IMAGE> are provided wherein X is O, S or SO2, R is hydrogen, halogen, lower alkyl, lower alkoxy, cyano or trifluoromethyl, and R' is carbethoxy, carboxy, alkali metal carboxylate and cyano. These compounds are useful as antiinflammatory agents and anti-hypertensive agents. |