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Publication Abstract from PubMed

A new and improved synthesis of the peroxisome proliferator-activated receptor (PPAR) agonist ragaglitazar applicable for large-scale preparation has been developed. The convergent synthetic procedure was based on a novel enzymatic kinetic resolution step. The conformation of ragaglitazar bound to the hPPARgamma receptor was quite different compared to the single-crystal structures of the l-arginine salt of ragaglitazar. In particular, the phenoxazine ring system had varying orientations. Ragaglitazar had high affinity for the hPPARalpha and -gamma receptors with IC(50) values of 0.98 and 0.092 microM, respectively. The lack of hPPARdelta activity could be explained by the absence of binding in the tail-up pocket in the hPPARdelta receptor, in contrast to the hPPARdelta agonist GW2433, which was able to bind in both the tail-up and tail-down pockets of the receptor.

Synthesis and biological and structural characterization of the dual-acting peroxisome proliferator-activated receptor alpha/gamma agonist ragaglitazar.,Ebdrup S, Pettersson I, Rasmussen HB, Deussen HJ, Frost Jensen A, Mortensen SB, Fleckner J, Pridal L, Nygaard L, Sauerberg P J Med Chem. 2003 Apr 10;46(8):1306-17. PMID:12672231^[2]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.