Add time:08/19/2019         Source:sciencedirect.com

A library of eighty-six assorted benzimidazole derivatives was screened for antiviral activity against a panel of ten RNA and DNA viruses.Fifty-two of them displayed different levels of activity against one or more viruses, among which CVB-5, RSV, BVDV and Sb-1 were the most frequently affected. In particular, fourteen compounds exhibited an EC50 in the range 9–17 μM (SI from 6 to >11) versus CVB-5, and seven compounds showed an EC50 in the range 5–15 μM (SI from 6.7 to ⩾20) against RSV, thus resulting comparable to or more potent than the respective reference drugs (NM108 and ribavirin). Most of these compounds derive from 2-benzylbenzimidazole, but also other molecular scaffolds [as 1-phenylbenzimidazole (2), 2-trifluoromethylbenzimidazole (69), dihydropyrido[3′,2′:4,5]imidazo[1,2-a][1,4]benzodiazepin-5-one (3), dibenzo[c,e]benzimidazo[1,2-a]azepine (22), and 2-(tetrahydropyran-2-yl)benzimidazole (81, 82 and 86)] are related to interesting levels of activity against these or other viruses (BVDV, Sb-1). Thus, these scaffolds (some of which, so far unexplored), represent valid starting points to develop more efficient agents against pathologies caused by CVB-5, RSV, BVDV and Sb-1 viruses.

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