Heterocycle-substituted proline dipeptides as potent VLA-4 antagonists
作者:Thomas S. Reger、Jasmine Zunic、Nicholas Stock、Bowei Wang、Nicholas D. Smith、Benito Munoz、Mitchell D. Green、Michael F. Gardner、Joyce P. James、Weichao Chen、Kenneth Alves、Qian Si、Kelly M. Treonze、Russell B. Lingham、Richard A. Mumford
DOI:10.1016/j.bmcl.2009.12.009
日期:2010.2
A variety of N-linked tertiary amines and heteroarylamines were examined at the 4-position of sulfonylated proline dipeptides in order to improve VLA-4 receptor off-rates and overcome the issue of CYP3A4 time-dependent inhibition of ester prodrugs. A tight-binding inhibitor 5j with a long off-rate provided sustained receptor occupancy despite poor oral pharmacokinetics. (C) 2009 Elsevier Ltd. All rights reserved.
Discovery of N-{N-[(3-cyanobenzene) sulfonyl]-4(R)-(3,3-difluoropiperidin-1-yl)-(l)-prolyl}-4-[(3′,5′-dichloro-isonicotinoyl) amino]-(l)-phenylalanine (MK-0617), a highly potent and orally active VLA-4 antagonist
作者:Shankar Venkatraman、Alec D. Lebsack、Kenneth Alves、Michael F. Gardner、Joyce James、Russell B. Lingham、Salony Maniar、Richard A. Mumford、Qian Si、Nicholas Stock、Kelly M. Treonze、Bowei Wang、Jasmine Zunic、Benito Munoz
DOI:10.1016/j.bmcl.2009.07.111
日期:2009.10
A series of prolyl-N-isonicotinoyl-(L)-4-aminophenylalanine derivatives substituted at the proline 4-position with cyclic amines was evaluated as VLA-4 antagonists. The ring size and presence or absence of fluorine affected potency and receptor occupancy. The analog with 3,3-difluoropiperidine at the proline 4-position (13) was the most potent compound and had very good duration of receptor occupancy in vitro. The ethyl ester prodrug of 13 demonstrated excellent receptor occupancy after oral dosing in rats. (C) 2009 Elsevier Ltd. All rights reserved.
[EN] VLA-4 ANTAGONISTS<br/>[FR] ANTAGONISTES DE VLA-4
申请人:MERCK & CO INC
公开号:WO2005087760A1
公开(公告)日:2005-09-22
Compounds of Formula I are antagonists of VLA-4, and as such are useful in the inhibition or prevention of cell adhesion and cell-adhesion mediated pathologies. These compounds may be formulated into pharmaceutical compositions and are suitable for use in the treatment of inflammatory bowel disease including ulcerative colitis and Crohn’s disease, multiple sclerosis, asthma, and rheumatoid arthritis.