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Medicinal Chemistry


ISSN (Print): 1573-4064
ISSN (Online): 1875-6638

Research Article

Synthesis of Nucleosides and Non-nucleosides Based 4,6-disubstituted-2-oxo-dihydropyridine-3-carbonitriles as Antiviral Agents

Author(s): Tarek S. Ibrahim, Hassan A. El-Sayed, Maan T. Khayat, Amany M.M. AL-Mahmoudy, Ahmed H. Moustafa*, Ayat K.S. El-Deen, Sherif A.F. Rostom and Siva S. Panda*

Volume 14, Issue 8, 2018

Page: [791 - 808] Pages: 18

DOI: 10.2174/1573406414666180522123524

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Background: Viral diseases are considered main threats that face the humanity worldwide. The emergence of new viruses like influenza viruses emphasizes the significance of designing novel antiviral drugs.

Method: The aim of this work is to synthesize a new set of nucleoside and non-nucleoside cyanopyridine, characterized and evaluated for their in vitro antiviral properties against various strains.

Conclusion: More of the compounds showed variable antiviral potential against a panel of eighteen DNA and RNA viruses. The screening data suggested that the order of activity of the active compounds are in the order of O-glycosyl > O-alkyl > N-alkyl > S-alkyl derivatives. In addition, the 4-fluoro substituted compounds are more effective among the O- and N-alkyl analogs, whereas remarkable antiviral activity was ascribed to the methoxylated O-glycosyl derivatives. Most of the active compounds proved to be more selective towards the inhibition of the replication of DNA rather than the RNA-viruses. The analogs 1a, 2a, 12b, 14b and 16b possessed broad spectrum and noticeable antiviral potential against most of the tested DNA- and RNA-viruses (EC50 ≈ 0.8-20 µM), accompanied with considerably low cytotoxic margin (MCC ≈ 4-20 µM), and comparable with reference standard antiviral agents.

Keywords: Synthesis, pyridine, nucleosides, non-nucleosides, antiviral, influenza viruses.

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