Biological Evaluation of Compounds with -NCS- Group or Derived from Thiazole and Imidazole. Activity on Prostaglandin Synthetase Complex

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Abstract
The effects of compounds with activity against thyroid peroxidase were tested on the activity of hydroperoxidase and cyclo-oxygenase of the prostaglandin synthetase complex in-vitro. Active compounds were found to inhibit the peroxidase, and the cyclo-oxygenase function. These compounds were also found to have anti-inflammatory activity as demonstrated by the reduction of carrageenan-induced oedema of the hind paw of the rat. Indomethacin and non-steroidal anti-inflammatory drugs tested under the same conditions were shown to have activity towards the cyclo-oxygenase rather than the peroxidase function of the prostaglandin synthetase complex. A common feature of the active compounds was the presence of an -NCS- linkage or free -SH group.