Novel Bicyclic Piperazine Derivatives of Triazolotriazine and Triazolopyrimidines as Highly Potent and Selective Adenosine A2A Receptor Antagonists
摘要:
A series of bicyclic piperazine derivatives of triazolotriazine and triazolopyrimidines was synthesized. Some of these analogues show high affinity and excellent selectivity for adenosine A(2a) receptor versus the adenosine A(1) receptor. Structure-activity-relationship (SAR) studies based on octahydropyrrolo[1,2-a]pyrazine and octahydropyrido[1,2-a]pyrazine with various capping groups are reported. Among these analogues, the most potent and selective A(2a) antagonist 26h has a K-i value of 0.2 nM and is 16500-fold selective with respect to the A(1) receptor. Among a number of compounds tested, compounds 21a and 21c exhibited significantly improved metabolic stability. Compounds 21a, 21c, and 18a showed good oral efficacy in rodent catalepsy models of Parkinson's disease.
Triazolo[
1,5-A]
Pyrimidines And Pyrazolo[
1,5-A]
Pyrimidines And Methods Of Making And Using The Same
申请人:Vu Chi
公开号:US20080070932A1
公开(公告)日:2008-03-20
The invention is based on the discovery that compounds of formula (I) possess unexpectedly high affinity for the A2a adenosine receptor, and can be useful as antagofiists. thereof for preventing and/or treating numerous diseases, including C) Parkinson's disease. In one embodiment, the invention features a compound of formual (I).
The invention is based on the discovery that compounds of formula (I) possess unexpectedly high affinity for the A
2a
adenosine receptor, and can be useful as antagonists thereof for preventing and/or treating numerous diseases, including Parkinson's disease. In one embodiment, the invention features a compound of formula (I).
[EN] A2A ADENOSINE RECEPTOR ANTAGONISTS<br/>[FR] ANTAGONISTES DE RECEPTEUR D'ADENOSINE A2A
申请人:BIOGEN IDEC INC
公开号:WO2004092173A3
公开(公告)日:2004-12-09
Studies on adenosine A2a receptor antagonists: comparison of three core heterocycles
作者:Chi B. Vu、Deborah Pan、Bo Peng、Li Sha、Gnanasambandam Kumaravel、Xiaowei Jin、Deepali Phadke、Thomas Engber、Carol Huang、Jennifer Reilly、Stacy Tam、Russell C. Petter
DOI:10.1016/j.bmcl.2004.07.047
日期:2004.10
Piperazine and (R)-2-(aminomethyl)pyrrolidine derivatives of [1,2,4]triazolo[1,5-a][1,3,5]triazine have recently been shown to be potent and selective adenosine A(2a) receptor antagonists. We have replaced the triazolotriazine core structure with two different heterocyclic cores. One of these, the one deriving from [1,2,4]triazolo[1,5-c]pyrimidine, appears to be particularly effective and selected analogs from this series have been shown to be orally active in a mouse catalepsy model of Parkinson's disease. (C) 2004 Elsevier Ltd. All rights reserved.
[EN] TRIAZOLO[1,5-A]PYRIMIDINES AND PYRAZOLO[1,5-A]PYRIMIDINES USEFUL AS A2A ADENOSIN E RECEPTOR ANTAGONISTS<br/>[FR] TRIAZOLO[1,5-A]PYRIMIDINES ET PYRAZOLO[1,5-A]PYRIMIDINES ET PROCEDES DE PREPARATION ET D'UTILISATION DE CELLES-CI