Preparation, physical properties, infra-red and mass-spectra of two new benzimida· zoles, namely (4) and (5) have been described. Since these new benzimidazoles have structure analogous with the three benzimidazoles described in the first paper of this series, and differe from them in the absene of v-hydroxyl group in their structure, determination of their pharmacological activities will help in establishing the structl!re-reactivity relationship.
F LATIF ,M AMJAD ,M HASSAN ,
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