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Benzoxazinones as human peroxisome proliferator activated receptor gamma (PPAR?) agonists: A docking study using glide

Author(s): N Das, M Dhanawat, SK Shrivastava

The purpose of the present study is to undertake a docking study of some benzoxazinone derivatives on human peroxisome proliferator activated receptor co-crystallized with an alpha-aryloxyphenylacetic acid agonist using Glide 4.5. The QikProp program was used to obtain the absorption, distribution, metabolism and excretion properties of the analogues. The intermolecular hydrogen bonding interaction of the best-fit ligands were found to be associated with Tyr473, Ser289, Hie 449, Hip 323, Ser 342 and Gly 284 amino acid residue at the receptor active site. Among all the observed interaction with similar binding pattern, the presence of methyl carboxypentyl side chain (Lig. No. 21) showed additional interaction with Ser 342 and the affinity was increased by carboxyl oxygen (as hydrogen bond acceptor) with a best Glide score of -14.54 as compared to the co-crystallized aryloxyphenyl acetic acid which achieved a glide score of -12.50.