Benzimidazole nucleus is a predominant heterocycle displaying a wide spectrum of
pharmacological activities. The privileged nature of the benzimidazole scaffold has been revealed
by its presence in most small molecule drugs and in its ability to bind multiple receptors with high
affinity. A literature review of the scaffold reveals several instances where structural modifications
of the benzimidazole core have resulted in high-affinity lead compounds against a variety of biological targets. Hence, this structural moiety offers opportunities to discover novel, better, safe and
highly potent biological agents. The goal of the present review is to compile the medicinal properties of benzimidazole derivatives with a focus on SAR (Structure-Activity Relationships).