Triazines are an important class of six-membered aromatic heterocycles with three nitrogen atoms that give rise to three regioisomers: 1,2,4-triazines, 1,2,3-triazines, and 1,3, 5-triazine. 1,2,3-Triazines show remarkable reactivity and have attracted attention for their medicinal value. Triazine compounds fused with other carbon and heterocycles are stable and have a broad spectrum of pharmacological activities.
Benzimidazole is a benzo derivative of imidazole. It is a kind of bicyclic aromatic organic compounds, which is formed by fusing a six-membered benzene ring and five-membered imidazole at positions 4 and 5 of imidazole ring. It is an important pharmacophore of many biologically active heterocyclic compounds with various pharmacological activities. Benzimidazoles and their derivatives have developed into dynamic heterocyclic systems due to their potency in a variety of biologically active compounds such as anticancer, bactericidal and antiviral drugs. Benzimidazoles are a class of therapeutic motifs with broad relevance in medicinal chemistry.
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