Bipiperidinyl Carboxylic Acid Amides as Potent, Selective, and Functionally Active CCR4 Antagonists

A cell‐based assay for the chemokine G‐protein‐coupled receptor CCR4 was developed, and used to screen a small‐molecule compound collection in a multiplex format. A series of bipiperidinyl carboxylic acid amides amenable to parallel chemistry were derived that were potent and selective antagonists of CCR4. One prototype compound was shown to be active in a functional model of chemotaxis, making it a useful chemical tool to explore the role of CCR4 in asthma, allergy, diabetes, and cancer.

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