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Molecules 2014, 19(3), 3539-3551; doi:10.3390/molecules19033539
Article

Design, Synthesis and SAR Study of Novel Trisubstituted Pyrimidine Amide Derivatives as CCR4 Antagonists

1,2
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, 4
, 3
, 2
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, 2,* , 1,*  and 1,2
1 School of Pharmaceutical Sciences, Jilin University, Changchun 130021, China 2 Laboratory of Computer-Aided Drug Design & Discovery, Beijing Institute of Pharmacology & Toxicology, Beijing 100850, China 3 Department of Immunology, School of Basic Medical Sciences, Key Laboratory of Medical Immunology, Ministry of Health, Peking University Health Science Center, Beijing 100191, China 4 Shenyang Pharmaceutical University, 103 Wenhua Road, Shenhe District, Shenyang 110016, China
* Authors to whom correspondence should be addressed.
Received: 26 January 2014 / Revised: 17 March 2014 / Accepted: 18 March 2014 / Published: 21 March 2014
(This article belongs to the Section Medicinal Chemistry)
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Abstract

The design, synthesis and structure-activity relationship studies of some novel trisubstituted pyrimidine amide derivatives prepared as CCR4 antagonists are described. The activities of these compounds were evaluated by the CCR4-MDC chemotaxis inhibition assay. Compound 1, which we have previously reported as a potent antagonist of CCR4, was employed as the positive control. The results indicated that most of the synthesized compounds exhibited some chemotaxis inhibition activity against CCR4. Of these new compounds, compounds 6c, 12a and 12b, with IC50 values of 0.064, 0.077 and 0.069 μM, respectively, showed higher or similar activity compared with compound 1 (IC50 of 0.078 μM). These compounds provide a basis for further structural modifications. The systematic structure-activity relationship of these trisubstituted pyrimidine amide derivatives was discussed based on the obtained experimental data. The results from the SAR study may be useful for identifying more potent CCR4 antagonists.
Keywords: antagonists; pyrimidine amides; synthesis; structure-activity relationship antagonists; pyrimidine amides; synthesis; structure-activity relationship
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.

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Xu, L.; Zhang, Y.; Dai, W.; Wang, Y.; Jiang, D.; Wang, L.; Xiao, J.; Yang, X.; Li, S. Design, Synthesis and SAR Study of Novel Trisubstituted Pyrimidine Amide Derivatives as CCR4 Antagonists. Molecules 2014, 19, 3539-3551.

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