A B S T R A C TThe 1,2,3-triazole ring is a major pharmacophore system among nitrogen-containing heterocycles. These fivemembered heterocyclic motifs with three nitrogen heteroatoms can be prepared easily using 'click' chemistry with copper-or ruthenium-catalysed azide-alkyne cycloaddition reactions. Recently, the 'linker' property of 1,2,3-triazoles was demonstrated, and a novel class of 1,2,3-triazole-containing hybrids and conjugates was synthesised and evaluated as lead compounds for diverse biological targets. These lead compounds have been demonstrated as anticancer, antimicrobial, anti-tubercular, antiviral, antidiabetic, antimalarial, anti-leishmanial, and neuroprotective agents. The present review summarises advances in lead compounds of 1,2,3-triazolecontaining hybrids, conjugates, and their related heterocycles in medicinal chemistry published in 2018. This review will be useful to scientists in research fields of organic synthesis, medicinal chemistry, phytochemistry, and pharmacology.
Chemistry: synthesis and properties of the 1,2,3-triazolesThe general synthetic route of 1,2,3-triazoles using click chemistry is described in Scheme 1A. The most popular route to 1,2,3-triazoles is Cu(I)-catalysed Huisgen 1,3-dipolar cycloaddition, which is the https://doi.
