[EN] 2-PYRAZINONE DERIVATIVES AND THEIR USE AS INHIBITORS OF NEUTROPHILE ELASTASE [FR] DÉRIVÉS DE 2-PYRAZINONE ET LEUR UTILISATION COMME INHIBITEURS DE L'ÉLASTASE DES NEUTROPHILES
[EN] 2-PYRAZINONE DERIVATIVES AND THEIR USE AS INHIBITORS OF NEUTROPHILE ELASTASE<br/>[FR] DÉRIVÉS DE 2-PYRAZINONE ET LEUR UTILISATION COMME INHIBITEURS DE L'ÉLASTASE DES NEUTROPHILES
申请人:ASTRAZENECA AB
公开号:WO2009058076A1
公开(公告)日:2009-05-07
The invention provides compounds of formula (I) wherein R1, R3, R4, R5, R14, X and W are as defined in the specification and optical isomers, racemates and tautomers thereof, and pharmaceutically acceptable salts thereof; together with processes for their preparation, pharmaceutical compositions containing them and their use in therapy. The compounds are inhibitors of human neutrophil elastase.
Direct Zincation of Functionalized Aromatics and Heterocycles by Using a Magnesium Base in the Presence of ZnCl<sub>2</sub>
作者:Zhibing Dong、Giuliano C. Clososki、Stefan H. Wunderlich、Andreas Unsinn、Jinshan Li、Paul Knochel
DOI:10.1002/chem.200801558
日期:2009.1.2
A wide range of polyfunctional aryl and heteroaryl zinc reagents were efficiently prepared in THF by using (TMP)2Mg⋅2 LiCl (TMP=2,2,6,6‐tetramethylpiperamidyl) in the presence of ZnCl2. The possible pathways of this metalation procedure as well as possible reactive intermediates are discussed. This experimental protocol expands the tolerance of functional groups and allows an efficient zincation of