HETEROCYCLIC INHIBITORS OF HISTAMINE RECEPTORS FOR THE TREATMENT OF DISEASE
申请人:Borchardt Allen J.
公开号:US20100120741A1
公开(公告)日:2010-05-13
The present invention relates to compounds and methods which may be useful as inhibitors of H
1
R and/or H
4
R for the treatment or prevention of inflammatory, autoimmune, allergic, and ocular diseases.
1,2,4-Triazolo[1,5-<i>a</i>]quinoxaline as a Versatile Tool for the Design of Selective Human A<sub>3</sub> Adenosine Receptor Antagonists: Synthesis, Biological Evaluation, and Molecular Modeling Studies of 2-(Hetero)aryl- and 2-Carboxy-Substitued Derivatives
A number of 4-oxo-substituted 1,2,4-triazolo[1,5-alquinoxaline derivatives bearing at position-2 the claimed (hetero)aryl moiety (compounds 1-15) but also a carboxylate group (16-28, 3236) or a hydrogen atom (29-31) were designed as human A(3) (hA(3)) adenosine receptor (AR) antagonists. This study produced some interesting compounds and among them the 2-(4methoxyphenyl)-1,2,4-triazolo[1,5-alquinoxalin-4-one (8), which can be considered one of the most potent and selective hA(3) adenosine receptor antagonists reported till now. Moreover, as a new finding, replacement of the classical 2-(hetero)aryl moiety with a 2-carboxylate function (compounds 16-28 and 32-36) maintained good hA(3) AR binding activity but, most importantly and interestingly, produced a large increase in bA(3) versus hA(1) selectivity. A receptor-based SAR analysis provided new interesting insights about the steric and electrostatic requirements that are important for the anchoring of these derivatives at the hA(3) receptor recognition site, thus highlighting the versatility of the triazoloquinoxaline scaffold for obtaining potent and selective hA(3) AR antagonists.
[EN] HETEROCYCLIC INHIBITORS OF HISTAMINE RECEPTORS FOR THE TREATMENT OF DISEASE<br/>[FR] INHIBITEURS HÉTÉROCYCLIQUES DE RÉCEPTEURS DE L'HISTAMINE DESTINÉS AU TRAITEMENT DE MALADIE
申请人:KALYPSYS INC
公开号:WO2011112731A3
公开(公告)日:2012-01-12
[EN] HETEROCYCLIC INHIBITORS OF HISTAMINE RECEPTORS FOR THE TREATMENT OF DISEASE<br/>[FR] INHIBITEURS HÉTÉROCYLIQUES DES RÉCEPTEURS DE L'HISTAMINE DESTINÉS AU TRAITEMENT D'UNE MALADIE
申请人:KALYPSYS INC
公开号:WO2010030785A2
公开(公告)日:2010-03-18
The present invention relates to compounds and methods which may be useful as inhibitors of H1R and/or H4R for the treatment or prevention of inflammatory, autoimmune, allergic, and ocular diseases.
1,2,4-Triazolo[1,5-a]quinoxaline derivatives: synthesis and biological evaluation as adenosine receptor antagonists
of a previously reported series of analogous size and shape, thus suggesting a similar A(1)-binding mode. In particular, the binding data indicate that alkylation of the 4-amino group of these derivatives lead to potent A(1)-receptor antagonists. Moreover, as new results, this study has pointed out that the ethyl 2-carboxylate group can advantageously replace the 2-(hetero)aryl ring of previously reported