Computer-assisted rational design, synthesis, and bioassay of non-steroidal anti-inflammatory agents.

A focused dataset of previously synthesized and tested [1,2,4]-triazolo[1,5-a]pyridines and pyridine-3-carboxylates was studied by Molecular Field Topology Analysis (MFTA) to identify steric and electronic determinants of anti-inflammatory activity useful for the design and synthesis of new anti-inflammatory agents. Rational design based on the MFTA model identified eleven novel pyridine-3-carboxylates (2a-e and 3a-f) as promising. After synthesis and screening, three of (2a, 2c, 3a) revealed potent anti-inflammatory activity exceeding that of indomethacin, the reference inhibitor for artificially induced edema in rats.