There are c.a. 50 derivatives of 2-aminobenzimidazole registered in the world as drugs with anticancer, antiviral, antifungal, anthelmintic and antihistamine properties [1]. Based on a review of the chemical literature, derivatives of 2-aminobenzimidazole showed multipharmacological effects such as hypotensive effect [2], anti-inflammatory effects [3], analgesic [4] or antiaggregatory [5] activity. Some chemical compounds, which contain in their structure 2-aminobenzimidazole motif inhibit

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... degeneration and in the future they may be used in a treatment of Alzheimer's disease or Parkinson's disease [6]. Recently, a lot of literature has revealed that 2-amino-1H-benzimidazole derivatives could effectively inhibiting the growth of various microorganisms, which suggest that 2-aminobenzimidazole compounds should have large potential as a new type of antibacterial [7], antifungal [8] or antiviral [9] agents. Some of 2-amino-1H-benzimidazole derivatives possess nonmedical use eg. anticorrosive or antifungal agents. They are also common ligands in coordination chemistry.