Solid-phase synthesis of rationally designed PPAR δ ligands

CHED 321

L. N. Aldrich, leslie.nichole.barnett@student.mercer.edu, J. D. Dortch, john.douglas.dortch@student.mercer.edu, and K. M. Bucholtz, bucholtz_km@mercer.edu. Department of Chemistry, Mercer University, 1400 Coleman Ave., Macon, GA 31207
PPAR δ, a ligand activated transcription factor, is of significant interest since little is known about its role in biological phenomena. Developing a focused library of small molecules with high binding affinity for PPAR δ will facilitate the exploration of this protein's function. Previously, a structural homology study and a computer-based docking study were performed to identify the unique characteristics of PPAR δ and to design organic compounds to potentially interact with these characteristics. A synthetic route using solid-phase methodology has been developed to reach the target library of small molecules. The library revolves around a proline functionalized resin and is diversified through the coupling of a variety of phenoxy-carboxylic acids and subsequent aryl-alkyl ether formation. Subsequent cleavage of the resin reveals a free carboxylic acid which can undergo amide formation to complete the synthesis of library members.