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. 2019 Jun 1;69(2):261-276.
doi: 10.2478/acph-2019-0015.

Synthesis and evaluation of some new 1,3,4-oxadiazoles bearing thiophene, thiazole, coumarin, pyridine and pyridazine derivatives as antiviral agents

Mohammed Albratty  1 , Karam Ahmed El-Sharkawy  1   2 , Hassan Ahmed Alhazmi  1
Affiliations
Free article

Synthesis and evaluation of some new 1,3,4-oxadiazoles bearing thiophene, thiazole, coumarin, pyridine and pyridazine derivatives as antiviral agents

Mohammed Albratty et al. Acta Pharm. .
Free article

Abstract

In an attempt to produce heterocyclic compounds based on 1,3,4-oxadiazole derivatives with potential antiviral activity, synthesis of compound 1 [2-(5-thioxo-4,5-dihydro-1,3,4-oxadiazol-2-yl)acetonitrile] was performed through the reaction of cyanoacetic acid hydrazide with carbon disulfide in alcoholic potassium hydroxide. Compound 1 has an activating methylene group, so it was directed toward some specific reactions. Thus, aryldiazonium chlorides reacted with compound 1 affording hydrazono derivatives 2a-c. Also, aromatic aldehydes reacted with compound 1 to produce compounds 3a,b. Furthermore, cyclic ketones were subjected to the synthesis of fused thiophene derivatives 4a,b via reaction with compound 1 in the presence of elemental sulfur. In addition, 1,3,4-oxadiazole derivative 1, when reacted with isothiocyanates, salicylaldehyde or 1,3-dicarbonyl compounds, formed thiazole derivatives 5a,b, coumarin derivative 6 and alkenyl derivatives 7a,b resp. Compound 7b underwent cyclization to afford pyridine derivative 8. Arylhydrazono derivatives 9a,b were produced through the reaction of compound 7a with aryldiazonium chlorides. Products 9a,b underwent cyclization to produce pyridazine derivatives 10a,b. Finally, 1,3,4-oxadiazole derivative 1 was directed toward reaction with hydrazine derivatives, bromoacetophenone and ethylchloroacetate affording compounds 11a,b, 12 and 13, resp. Fused thiophene derivatives 14a,b were produced via reaction of compounds 4a,b with a mixture of malononitrile and ethylorthoformate. Antiviral activity of the synthesized products showed that 5-(4-amino-3-ethyl-2-thioxo-2,3-dihydrothiazol-5-yl)-1,3,4-oxadiazole-2(3H)-thione (5a) and 5-(4-amino-3-phenyl-2-thioxo-2,3-dihydrothiazol-5-yl)-1,3,4-oxadiazole-2(3H)-thione (5b) acted as the most active agents against Feline herpes virus, Feline corona virus, Herpes simplex virus-1 and Herpes simplex virus-2, whereas compound 2-(5-(2-phenylhydrazono)-4,5-dihydro-1,3,4-oxadiazol-2-yl)acetonitrile (11b) was the most effective against Vaccinia virus, Herpes simplex virus (TK-KOS-ACVr), Coxsackie virus B4 and Vesicular stomatitis virus.

Keywords: 1,3,4-oxadiazole derivatives; antiviral activity; coumarin; pyridazine; pyridine; thiazole; thiophene.

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References

REFERENCES

    1. 1. N. C. Desai, H. Somani, A. Trivedi, K. Bhatt, L. Nawale, V. M. Khedkar, P. C. Jha and D. Sarkar, Synthesis, biological evaluation and molecular docking study of some novel indole and pyridine based 1,3,4-oxadiazole derivatives as potential antitubercular agents, Bioorg. Med. Chem. Lett. 26 (2016) 1776–1783; https://doi.org/10.1016/j.bmcl.2016.02.04310.1016/j.bmcl.2016.02.043
    1. 2. A. G. Banerjee, N. Das, S. A. Shengule, R. S. Srivastava and S. K. Shrivastava, Synthesis, characterization, evaluation and molecular dynamics studies of 5,6-diphenyl-1,2,4-triazin-3(2H)-one derivatives bearing 5-substituted 1,3,4-oxadiazole as potential anti–inflammatory and analgesic agents, Eur. J. Med. Chem. 101 (2015) 81–95; https://doi.org/10.1016/j.ejmech.2015.06.02010.1016/j.ejmech.2015.06.020
    1. 3. W. Wu, Q. Chen, A. Tai, G. Jiang and G. Ouyang, Synthesis and antiviral activity of 2-substituted methylthio-5-(4-amino-2-methylpyrimidin-5-yl)-1,3,4-oxadiazole derivatives, Bioorg. Med. Chem. Lett. 25 (2015) 2243–2246; https://doi.org/10.1016/j.bmcl.2015.02.06910.1016/j.bmcl.2015.02.069
    1. 4. S. Zhang, Y. Luo, L. Q. He, Z. J. Liu, A. Q. Jiang, Y. H. Yang and H. L. Zhu, Synthesis, biological evaluation, and molecular docking studies of novel 1,3,4-oxadiazole derivatives possessing benzotriazole moiety as FAK inhibitors with anticancer activity, Bioorg. Med. Chem. 21 (2013) 3723–3729; https://doi.org/10.1016/j.bmc.2013.04.04310.1016/j.bmc.2013.04.043
    1. 5. R. A. Rane, S. D. Gutte and N. U. Sahu, Synthesis and evaluation of novel 1,3,4-oxadiazole derivatives of marine bromopyrrole alkaloids as antimicrobial agent, Bioorg. Med. Chem. Lett. 22 (2012) 6429–6432; https://doi.org/10.1016/j.bmcl.2012.08.06110.1016/j.bmcl.2012.08.061

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