Bipiperidine amide 1 has been identified as a CC chemokine receptor 3 (CCR3) antagonist. Optimization of its structure–activity relationship has resulted in the identification of cis (R, R)- 4-[(3, 4-dichlorophenyl) methyl]-3-hydroxymethyl-1′(6-quinolinylcarbonyl)-1, 4′- bipiperidine 14n, which exhibits potent receptor affinity and inhibition of both calcium flux and eosinophil chemotaxis.