Conformationally constrained spirocycles (17-23) and (31-36) were synthesised. In vitro data revealed that these compounds are CCR1 antagonists with sub-nanomolar potency. In a functional assay 22, 23 and 36 inhibited CCR1 mediated chemotaxis with an IC50 value of 2, 2.6 and 68 nM, respectively. (C) 2013 Elsevier Ltd. All rights reserved.
Conformationally constrained spirocycles (17-23) and (31-36) were synthesised. In vitro data revealed that these compounds are CCR1 antagonists with sub-nanomolar potency. In a functional assay 22, 23 and 36 inhibited CCR1 mediated chemotaxis with an IC50 value of 2, 2.6 and 68 nM, respectively. (C) 2013 Elsevier Ltd. All rights reserved.