Synthesis and antiinflammatory properties of 2-aminobenzimidazole derivatives.

Several 1-alkyl or 1-aralkyl substituted 2-aminobenzimidazole derivatives, bearing an acetic or acetohydroxamic group at 3-position, were synthesized. Some of these products were tested for their antiinflammatory and analgesic properties. These compounds exhibited an antiinflammatory activity lower than that of reference drug Indomethacin. Compound 2e showed the highest efficacy, but not in a dose-related manner. Only compounds 3a and 16 exhibited some analgesic activity, but at a very high dose.