Abstract
We describe the design, synthesis, and evaluation of novel disubstituted cyclohexanes as potent CCR2 antagonists. Exploratory SAR studies led to the cis-disubstituted derivative 22, which displayed excellent binding affinity for CCR2 (binding IC50 = 5.1 nM) and potent functional antagonism (calcium flux IC50 = 18 nM and chemotaxis IC 50 = 1 nM). Site-directed mutagenesis studies with 22 suggest the compound is binding near the key receptor residue Glu291, however, 22 is not reliant on Glu291 for its binding affinity.
MeSH terms
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Binding, Competitive
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Calcium / metabolism
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Chemokine CCL2 / metabolism
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Chemotaxis, Leukocyte / drug effects
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Cyclohexanes / chemical synthesis*
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Cyclohexanes / chemistry
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Cyclohexanes / pharmacology
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Humans
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In Vitro Techniques
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Leukocytes, Mononuclear / drug effects
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Leukocytes, Mononuclear / metabolism
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Models, Molecular
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Mutagenesis, Site-Directed
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Radioligand Assay
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Receptors, CCR2 / antagonists & inhibitors*
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Receptors, CCR2 / genetics
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Stereoisomerism
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Structure-Activity Relationship
Substances
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Chemokine CCL2
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Cyclohexanes
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Receptors, CCR2
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Calcium