A series of 2-aminothiazole-derived antagonists of the CCR4 receptor has been synthesized and their affinity for the receptor evaluated using a [125I] TARC (CCL17) displacement assay. Optimization of these compounds for potency and pharmacokinetic properties led to the discovery of potent, orally bioavailable antagonists.
[Holla, B. Shivarama; Malini; Rao, B. Sooryanarayana; Sarojini; Kumari, N. Suchetha European Journal of Medicinal Chemistry, 2003 , vol. 38, # 3 p. 313 - 318]