The synthesis of 3-pyrazinyl-imidazo[1,2-a]pyridines from a vinyl ether
摘要:
A new method has been developed for the synthesis of 3-pyrazinyl-imidazo[1,2-a]pyridines. 2-Chloro-6[(Z)-2-ethoxyethenyl]pyrazine was treated with N-bromosuccinimide in dioxane-water to generate the 2-bromo-2-(6-chloropyrazin-2-yl)-1-ethoxyethanol intermediate. In a subsequent one-pot step, optional treatment with various 2-aminopyridines provided the cyclized 3-pyrazinyl-imidazo[1,2-a]pyridines in 31-76% yields. (C) 2010 Elsevier Ltd. All rights reserved.
[EN] 6 SUBSTITUTED 2-HETEROCYCLYLAMINO PYRAZINE COMPOUNDS AS CHK-1 INHIBITORS<br/>[FR] COMPOSÉS 2-HÉTÉROCYCLYLAMINO PYRAZINES SUBSTITUÉES EN POSITION 6 EN TANT QU'INHIBITEURS DE CHK-1
申请人:PFIZER
公开号:WO2010016005A1
公开(公告)日:2010-02-11
The present invention is directed to compounds of formula (I), and pharmaceutically acceptable salts thereof, their synthesis, and their use as CHK-1 inhibitors.
本发明涉及式(I)的化合物,及其药用可接受的盐,它们的合成以及它们作为CHK-1抑制剂的用途。
6 SUBSTITUTED 2- HETEROCYCLYLAMINO PYRAZINE COMPOUNDS AS CHK-1 INHIBITORS
申请人:Braganza John Frederick
公开号:US20110144084A1
公开(公告)日:2011-06-16
The present invention is directed to compounds of formula (I),
and pharmaceutically acceptable salts thereof, their synthesis, and their use as CHK-1 inhibitors.
本发明涉及式(I)化合物及其药学上可接受的盐,它们的合成以及它们作为CHK-1抑制剂的用途。
6 SUBSTITUTED 2-HETEROCYCLYLAMINO PYRAZINE COMPOUNDS AS CHK-1 INHIBITORS
申请人:Pfizer Inc.
公开号:EP2328890B1
公开(公告)日:2012-01-25
The synthesis of 3-pyrazinyl-imidazo[1,2-a]pyridines from a vinyl ether
作者:Michael Raymond Collins、Qinhua Huang、Martha A. Ornelas、Stephanie A. Scales
DOI:10.1016/j.tetlet.2010.04.117
日期:2010.7
A new method has been developed for the synthesis of 3-pyrazinyl-imidazo[1,2-a]pyridines. 2-Chloro-6[(Z)-2-ethoxyethenyl]pyrazine was treated with N-bromosuccinimide in dioxane-water to generate the 2-bromo-2-(6-chloropyrazin-2-yl)-1-ethoxyethanol intermediate. In a subsequent one-pot step, optional treatment with various 2-aminopyridines provided the cyclized 3-pyrazinyl-imidazo[1,2-a]pyridines in 31-76% yields. (C) 2010 Elsevier Ltd. All rights reserved.