Discovery of 3,6-dihydroimidazo[4,5-d]pyrrolo[2,3-b]pyridin-2(1H)-one derivatives as novel JAK inhibitors
摘要:
Because Janus kinases (JAKs) play a crucial role in cytokine-mediated signal transduction, JAKs are an attractive target for the treatment of organ transplant rejection and autoimmune diseases such as rheumatoid arthritis (RA). To identify JAK inhibitors, we focused on the 1H-pyrrolo[2,3-b]pyridine derivative 3, which exhibited moderate JAK3 and JAK1 inhibitory activities. Optimization of 3 identified the tricyclic imidazo-pyrrolopyridinone derivative 19, which exhibited potent JAK3 and JAK1 inhibitory activities (IC50 = 1.1 nM, 1.5 nM, respectively) with favorable metabolic stability. (C) 2015 Elsevier Ltd. All rights reserved.
[EN] FUSED PYRAZOLE DERIVATIVES AS JAK INHIBITORS<br/>[FR] DÉRIVÉS DE PYRAZOLE CONDENSÉS UTILISÉS EN TANT QU'INHIBITEURS DE JAK
申请人:ALMIRALL SA
公开号:WO2017220431A1
公开(公告)日:2017-12-28
Novel fused pyrazole derivatives of Formula (I) are disclosed; as well as process for their preparation, pharmaceutical compositions comprising them and their use in therapy as inhibitors of Janus Kinases (JAK).
Heteroaryl imidazolone derivatives as jak inhibitors
申请人:Almirall, S.A.
公开号:EP2397482A1
公开(公告)日:2011-12-21
New heteroaryl imidazolone derivatives having the chemical structure of formula (I) are disclosed; as well as process for their preparation, pharmaceutical compositions comprising them and their use in therapy as inhibitors of Janus Kinases (JAK).
Pyrazolopyrimidine derivatives or pharmaceutically acceptable salts thereof
申请人:Unoki Gen
公开号:US20070173519A1
公开(公告)日:2007-07-26
A pyrazolopyrimidine derivative represented by formula (1) and pharmaceutically acceptable salt thereof exhibit excellent inhibitory activity against MAPKAP-K2. Accordingly, medicines containing this compound as an active ingredient are expected to be effective for treating diseases mediated by MAPKAP-K2 such as, for example, inflammatory disorder, autoimmune diseases, destructive osteopathy, cancer and/or tumor growth.
The present invention relates to the use of novel pyrrolopyrazinyl urea derivatives of Formula I,
wherein the variables R
1
, R
2
, R
3
, R
4
, and R
5
are defined as described herein, which inhibit JAK and are useful for the treatment of auto-immune and inflammatory diseases.
The object of the present invention is to provide a compound and a pharmaceutical composition having excellent Syk inhibitory activity. According to the present invention, a nicotinamide derivative represented by the following formula (I) or a salt thereof is provided,
wherein
R
1
is a substituent represented by the following formula (II-1), (III-1), or (IV-1)
(wherein R
3
, R
4
, R
5
, n, and X
1
have the same definitions as those described in the specification), and R
2
is a pyridyl, indazolyl, phenyl, pyrazolopyridyl, benzisoxazolyl, pyrimidinyl, or quinolyl group, each of which optionally has at least one substituent.