Design and Synthesis of a Novel Series of Bicyclic Heterocycles As Potent γ-Secretase Modulators
摘要:
The design and the synthesis of several chemical subclasses of imidazole containing gamma-secretase modulators (GSMs) is described. Conformational restriction of pyridone 4 into bicyclic pyridone isosteres has led to compounds with high in vitro and in vivo potency. This has resulted, in the identification of benzimidazole 44a as a GSM with low nanomolar potency in vitro. In mouse, rat, and dog, this compound displayed the typical gamma-secretase modulatory profile by lowering A beta 42 and A beta 40 levels combined with an especially pronounced increase in A beta 38 and A beta 37 levels while leaving the total levels of amyloid peptides unchanged.
[EN] SUBSTITUTED BICYCLIC IMIDAZOLE DERIVATIVES AS GAMMA SECRETASE MODULATORS [FR] DÉRIVÉS BICYCLIQUES SUBSTITUÉS D'IMIDAZOLE COMME MODULATEURS DE LA GAMMA-SÉCRÉTASE
SUBSTITUTED BICYCLIC IMIDAZOLE DERIVATIVES AS GAMMA SECRETASE MODULATORS
申请人:Gijsen Henricus Jacobus Maria
公开号:US20110237580A1
公开(公告)日:2011-09-29
The present invention is concerned with novel substituted bicyclic imidazole derivatives of Formula (I)
wherein R
0
, R
1
, R
3
, R
4
, X, A
1
, A
2
, A
3
, A
4
, Y
1
, Y
2
and Y
3
have the meaning defined in the claims. The compounds according to the present invention are useful as gamma secretase modulators. The invention further relates to processes for preparing such novel compounds, pharmaceutical compositions comprising said novel compound as an active ingredient as well as the use of said compounds as a medicament.