Synthesis and dengue inhibition potential of new uridine derivatives: The DENV 2 inhibitors

Dengue is an important arboviral infection worldwide for which presently there is no specific medicine. Evidence suggests there are four serotypes of dengue virus (DENV1-4), of which DENV 2 is considered to cause the most sever dengue. Therefore, this study was aimed to develop the new uridine derivatives (NUDs) against dengue virus (DENV 2). In current study 2-(3,4-dihydroxy-5-(hydroxymethyl)-tetrahydrofuran-2-yl)-4-((substituted cyclohexa-2,5-dienylidene)methyl)-1,2,4-triazine-3,5(2H,4H)-dione (2a-f), were obtained via reaction of substituted uridine (1) and different aromatic aldehydes separately. Synthesized NUDs were further characterized using FTIR, 1H & 13C-NMR, mass and element analysis data. Characterized NUDs were assessed for their inhibition potential against DENV 2. Synthesized NUDs were also evaluated for their cytotoxicity towards Vero cells by MTT assay method. This investigation successfully synthesized NUDs 2a-f and reported their high inhibitory activity against DENV 2. The synthesized NUDs exhibited negligible cytotoxicity. High anti-viral activity against DENV 2 serotype and least/no cytotoxicity of NUDs suggests their importance in the treatment of dengue. Present study recommends that in future these NUDs must be investigated for their clinical importance to establish them as a choice for dengue treatment.