The benzimidazole-4-carboxamide derivatives of Formula or pharmaceutically acceptable salts thereof, wherein the derivatives are as follows: -2-(5-nitro-2-thienyl)-1H-benzimidazole-4-[N-(1-hydroxymethyl-2-p-nitrophenyl hydroxyethyl)]amide -2-(5-amino-2-thienyl)-1H-benzimidazole-4-[N-(1-hydroxymethyl-2-p-nitrophenyl hydroxyethyl)]amide -2-(5-amino-2-thienyl)-1H-benzimidazole-4-[N-(1-hydroxymethyl-2-p-aminophenyl hydroxyethyl)]amide 2-(5-amino-2-thienyl)-1H-benzimidazole-4-[N-(1-methyl-2-p-chlorophenylhydroxy ethyl)]amide 2-(5-amino-2-thienyl)-1H-benzimidazole-4-(N-o-fluorophenyl)amide 2-(5-amino-2-thienyl)-1H-benzimidazole-4-(N-o-chlorophenyl)amide 2-(5-amino-2-thienyl)-1H-benzimidazole-4-(N-o-bromophenyl)amide 2-(5-amino-2-thienyl)-1H-benzimidazole-4-(N-m-fluorophenyl)amide 2-(5-amino-2-thienyl)-1H-benzimidazole-4-(N-m-chlorophenyl)amide 2-(5-amino-2-thienyl)-1H-benzimidazole-4-(N-m-bromophenyl)amide 2-(5-amino-2-thienyl)-1H-benzimidazole-4-(N-p-fluorophenyl)amide 2-(5-amino-2-thienyl)-1H-benzimidazole-4-(N-p-chlorophenyl)amide 2-(5-amino-2-thienyl)-1H-benzimidazole-4-(N-p-bromophenyl)amide 2-(5-amino-2-thienyl)-1H-benzimidazole-4-(N-o-methylphenyl)amide 2-(5-amino-2-thienyl)-1H-benzimidazole-4-(N-o-hydroxylphenyl)amide 2-(5-amino-2-thienyl)-1H-benzimidazole-4-(N-o-aminophenyl)amide 2-(5-amino-2-thienyl)-1H-benzimidazole-4-(N-m-methylphenyl)amide 2-(5-amino-2-thienyl)-1H-benzimidazole-4-(N-m-hydroxylphenyl)amide 2-(5-amino-2-thienyl)-1H-benzimidazole-4-(N-m-aminophenyl)amide 2-(5-amino-2-thienyl)-1H-benzimidazole-4-(N-p-methylphenyl)amide 2-(5-amino-2-thienyl)-1H-benzimidazole-4-(N-p-hydroxylphenyl)amide 2-(5-amino-2-thienyl)-1H-benzimidazole-4-(N-p-aminophenyl)amide 2-(5-amino-2-thienyl)-1H-benzimidazole-4-(N-2-hydroxyl-4-pyrimidinyl)amide 2-(5-amino-2-thienyl)-1H-benzimidazole-4-(N-6-purinyl)amide 2-(5-amino-2-thienyl)-1H-benzimidazole-4-(N-6-hydroxyl-2-purinyl)amide. -2-(5-nitro-2-thienyl)-1H-benzimidazole-4-[N-(1-hydroxymethyl-2-p-nitrophenyl hydroxyethyl)]amide -2-(5-amino-2-thienyl)-1H-benzimidazole-4-[N-(1-hydroxymethyl-2-p-nitrophenyl hydroxyethyl)]amide -2-(5-amino-2-thienyl)-1H-benzimidazole-4-[N-(1-hydroxymethyl-2-p-aminophenyl hydroxyethyl)]amide 2-(5-amino-2-thienyl)-1H-benzimidazole-4-[N-(1-methyl-2-p-chlorophenylhydroxy ethyl)]amide 2-(5-amino-2-thienyl)-1H-benzimidazole-4-(N-o-fluorophenyl)amide 2-(5-amino-2-thienyl)-1H-benzimidazole-4-(N-o-chlorophenyl)amide 2-(5-amino-2-thienyl)-1H-benzimidazole-4-(N-o-bromophenyl)amide 2-(5-amino-2-thienyl)-1H-benzimidazole-4-(N-m-fluorophenyl)amide 2-(5-amino-2-thienyl)-1H-benzimidazole-4-(N-m-chlorophenyl)amide 2-(5-amino-2-thienyl)-1H-benzimidazole-4-(N-m-bromophenyl)amide 2-(5-amino-2-thienyl)-1H-benzimidazole-4-(N-p-fluorophenyl)amide 2-(5-amino-2-thienyl)-1H-benzimidazole-4-(N-p-chlorophenyl)amide 2-(5-amino-2-thienyl)-1H-benzimidazole-4-(N-p-bromophenyl)amide 2-(5-amino-2-thienyl)-1H-benzimidazole-4-(N-o-methylphenyl)amide 2-(5-amino-2-thienyl)-1H-benzimidazole-4-(N-o-hydroxylphenyl)amide 2-(5-amino-2-thienyl)-1H-benzimidazole-4-(N-o-aminophenyl)amide 2-(5-amino-2-thienyl)-1H-benzimidazole-4-(N-m-methylphenyl)amide 2-(5-amino-2-thienyl)-1H-benzimidazole-4-(N-m-hydroxylphenyl)amide 2-(5-amino-2-thienyl)-1H-benzimidazole-4-(N-m-aminophenyl)amide 2-(5-amino-2-thienyl)-1H-benzimidazole-4-(N-p-methylphenyl)amide 2-(5-amino-2-thienyl)-1H-benzimidazole-4-(N-p-hydroxylphenyl)amide 2-(5-amino-2-thienyl)-1H-benzimidazole-4-(N-p-aminophenyl)amide 2-(5-amino-2-thienyl)-1H-benzimidazole-4-(N-2-hydroxyl-4-pyrimidinyl)amide 2-(5-amino-2-thienyl)-1H-benzimidazole-4-(N-6-purinyl)amide 2-(5-amino-2-thienyl)-1H-benzimidazole-4-(N-6-hydroxyl-2-purinyl)amide.