Abstract
Summary
1. The preparation of 1-mono-substituted and 1,1-disubstituted nitrothia-zolylureas has been described. 2. Antihisto-monad activity was demonstrated for mono-substituted thiazolylureas with not more than 4 carbon atoms. The 1-methyl compound was more toxic and less effective than the 1-ethyl derivative. The dimethyl compound was less toxic and also less effective than the mono-methyl compound. 3. In addition to therapeutic activity in enterohepatitis, nithi-azide [l-ethyl-3-(5-nitro-2-thiazolyl) urea] was found to have antitrichomonal activity but antimalarial, antitrypanosomal or anticoc-cidial activity was not demonstrable.
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