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The Scientific World Journal
Volume 2013 (2013), Article ID 682603, 10 pages
Research Article

New Urea and Thiourea Derivatives of Piperazine Doped with Febuxostat: Synthesis and Evaluation of Anti-TMV and Antimicrobial Activities

1Department of Chemistry, Sri Venkateswara University, Tirupati, Andhra Pradesh-517 502, India
2Department of Biochemistry, Sri Venkateswara University, Tirupati, Andhra Pradesh-517 502, India

Received 24 August 2013; Accepted 3 October 2013

Academic Editors: H. R. Appelt, C. Aragoncillo, G. A. Elmegeed, H. Miyabe, and H. Pellissier

Copyright © 2013 Reddivari Chenna Krishna Reddy et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


A series of new 4-(5-(3-cyano-4-isobutoxyphenyl)-4-methylthiazole-2-carbonyl)-N-(substituted phenyl)piperazine-1-carboxamides 8(a–e)/carbothioamides 8(f–j) were accomplished for biological interest by the simple addition of active functionalized arylisocyanates 7(a–e)/arylisothiocyanates 7(f–j) with 2-isobutoxy-5-(4-methyl-2-(piperazine-1-carbonyl)thiazol-5-yl)benzonitrile (4). Compound 4 was synthesized in high yields (94%) by the condensation reaction of febuxostat (1) with piperazine using a selective reagent such as propylphosphonic anhydride (T3P). Antiviral activity against Tobacco mosaic virus (TMV) and antimicrobial activity of the synthesized compounds were evaluated. Biological data revealed that 4-nitrophenyl substituted urea 8d, and 3-bromophenyl substituted thiourea 8f exhibited promising antiviral activities. Moreover, 4-fluorophenyl substituted urea 8a, 4-nitrophenyl substituted urea 8d, 3-bromophenyl substituted thiourea 8f, and 2,4-dichlorophenyl substituted thiourea 8j exhibited potent antimicrobial activity.