The identification and evaluation of aryl-[1, 4] diazepane ureas as functional antagonists of the chemokine receptor CXCR3 are described. Specific examples exhibit IC50 values of∼ 60nM in a calcium mobilization functional assay, and dose-dependently inhibit CXCR3 functional response to CXCL11 (interferon-inducible T-cell α chemoattractant/I-TAC) as measured by T-cell chemotaxis, with a potency of approximately 100nM.