abstract |
Benzimidazole derivatives of the formula <IMAGE> (where R1 is hydrogen, C1-8 alkyl, cycloalkyl, phenyl or aralkyl, R2 is hydrogen or C1-8 alkyl, or R1 and R2 together form a ring with the adjacent nitrogen atom, and R3 and R4 are hydrogen, halogen, trifluoromethyl, alkyl, alkoxy, alkoxycarbonyl or amino) are antiulcer agents. |