Substituted 7-Amino-5-thio-thiazolo[4,5-<i>d</i>]pyrimidines as Potent and Selective Antagonists of the Fractalkine Receptor (CX<sub>3</sub>CR1)
作者:Sofia Karlström、Gunnar Nordvall、Daniel Sohn、Andreas Hettman、Dominika Turek、Kristofer Åhlin、Annika Kers、Martina Claesson、Can Slivo、Yvonne Lo-Alfredsson、Carl Petersson、Galina Bessidskaia、Per H. Svensson、Tobias Rein、Eva Jerning、Åsa Malmberg、Charlotte Ahlgen、Colin Ray、Lauri Vares、Vladimir Ivanov、Rolf Johansson
DOI:10.1021/jm3012273
日期:2013.4.25
We have developed two parallel series, A and B, of CX(3)CR1 antagonists for the treatment of multiple sclerosis. By modifying the substituents on the 7-amino-5-thio-thiazolo[4,5-d]-pyrimidine core structure, we were able to achieve compounds with high selectivity for CX(3)CR1 over the closely related CXCR2 receptor. The structure-activity relationships showed that a leucinol moiety attached to the core-structure in the 7-position together with alpha-methyl branched benzyl derivatives in the 5-position displayed promising affinity, and selectivity as well as physicochemical properties, as exemplified by compounds 18a and 24h. We show the preparation of the first potent and selective orally available CX(3)CR1 antagonists.