Discovery of a potent, orally bioavailable and highly selective human neuronal nitric oxide synthase (nNOS) inhibitor, N-(1-(piperidin-4-yl)indolin-5-yl)thiophene-2-carboximidamide as a pre-clinical development candidate for the treatment of migraine
作者:Subhash C. Annedi、Shawn P. Maddaford、Jailall Ramnauth、Paul Renton、Taras Rybak、Sarah Silverman、Suman Rakhit、Gabriela Mladenova、Peter Dove、John S. Andrews、Dongqin Zhang、Frank Porreca
DOI:10.1016/j.ejmech.2012.07.006
日期:2012.9
We recently reported a series of 1,6-disubstituted indoline-based thiophene amidine compounds (5) as selective neuronal nitric oxide synthase (nNOS) inhibitors to mitigate the cardiovascular liabilities associated with hERG K+ channel inhibition (IC50 = 4.7 mu m) with previously reported tetrahydroquinoline-based selective nNOS inhibitors (4). The extended structure activity relationship studies within the indoline core led to the identification of 43 as a selection candidate for further evaluations. The in vivo activity in two different pain (spinal nerve ligation and migraine pain) models, the excellent physicochemical and pharmacokinetic properties, oral bioavailability (F-po = 91%), and the in vitro safety profile disclosed in this report make 43 an ideal candidate for further evaluation in clinical applications related to migraine pain. (C) 2012 Elsevier Masson SAS. All rights reserved.