1-Substituted 4-perylen-2(3)-yl-1,2,3-triazoles, easily accessible by 'click' reaction and combining in one molecule a polyaromatic unit and a nitrogen heterocycle, were found to strongly inhibit the reproduction of enveloped viruses. 5-[4-(Perylen-3-yl)-1,2,3-triazol-1-yl]-uridine and 2-[1-(2-hydroxyethyl)-1,2,3-triazol-4-yl]perylene show EC of 0.031 and 0.023 μM, respectively, against tick-borne encephalitis virus (TBEV). Remarkably, the nucleoside unit appears to be not essential for antiviral activity. These results provide deeper understanding of structural basis of activity for this new class of antivirals.
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