191 ChemInform Abstract The imidazobenzimidazoles (III) and (VIII) are prepared from the hydroxy compounds (I) and (VI) via the corresponding chloro derivatives (II) and (VII). Substitution reaction of (II) with the nucleophiles (IV) yields the benzimidazoles (V). The compounds synthesized have hypoglycemic and hypotensive activity. They inhibite cyclo-AMP phosphodiesterase and acetylcholinesterase.
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