Development of Orally Active Oxytocin Antagonists: Studies on 1-(1-{4-[1-(2-Methyl-1-oxidopyridin-3-ylmethyl)piperidin-4-yloxy]-2- methoxybenzoyl}piperidin-4-yl)-1,4-dihydrobenz[<i>d</i>][1,3]oxazin-2-one (L-372,662) and Related Pyridines
作者:Ian M. Bell、Jill M. Erb、Roger M. Freidinger、Steven N. Gallicchio、James P. Guare、Maribeth T. Guidotti、Rita A. Halpin、Doug W. Hobbs、Carl F. Homnick、Michelle S. Kuo、Edward V. Lis、David J. Mathre、Stuart R. Michelson、Joseph M. Pawluczyk、Douglas J. Pettibone、Duane R. Reiss、Stanley Vickers、Peter D. Williams、Carla J. Woyden
DOI:10.1021/jm9800797
日期:1998.6.1
The previously reported oxytocinantagonist L-371,257 (2) has been modified at its acetylpiperidine terminus to incorporate various pyridine N-oxide groups. This modification has led to the identification of compounds with improved pharmacokinetics and excellent oral bioavailability. The pyridine N-oxide series is exemplified by L-372,662 (30), which possessed good potency in vitro (Ki = 4.1 nM, cloned