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A novel series of N-(benzoylalkyl)imidazoles and N-(omega-phenyl-omega-hydroxyalkyl)imidazoles was synthesized and evaluated for anticonvulsant activity in mice against maximal electroshock induced seizures. Some of the compounds showed an activity comparable to or better than phenytoin and phenobarbital. The N-[beta-[4-(beta-phenylethyl)phenyl]-beta-hydroxyethyl]imidazole (38) was selected for further studies; preclinical toxicology and additional efficacy evaluations are in progress. Structure-activity relationships are discussed.

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A series of new 4‐aryl‐1,3‐dihydro‐2H‐1,5‐benzodiazepine‐2‐thiones (3) has been synthesized by condensing the 3,3‐dimercapto‐1‐aryl‐2‐propen‐1‐ones with o‐phenylenediamine. The structure was established by the results of acid cleavage and by nmr spectra. The alkylation of compounds 3 gave 2‐alkylthio‐4‐aryl‐3H‐1,5 benzodiazepines (10).