Simple Synthesis of 4‐Substituted 1(2<i>H</i>)‐Isoquinolinones via Electrophilic Trapping of Lithiated Mono‐ and Dianion Precursors
作者:Anthony D. Sercel、Joseph P. Sanchez、H. D. Hollis Showalter
DOI:10.1080/00397910701575343
日期:2007.12
developed to access 4‐substituted 1(2H)‐isoquinolinones from readily available precursors. This is achieved via electrophilic trapping of di‐ and monolithium anions derived from alkyllithium exchange of 4‐bromo‐1(2H)‐isoquinolinones and corresponding 4‐bromo‐1‐methoxyisoquinolines, respectively. Products derived from the latter are then hydrolyzed to the target 4‐substituted 1(2H)‐isoquinolinones. The methodology
The invention relates to pyridine derivatives of formula (I), wherein the substituents and symbols are defined as indicated in the description, processes for the preparation thereof, their usage in the preparation of a pharmaceutical composition for the treatment of a disease which responds to an inhibition of angiogenesis, and pharmaceutical compositions containing such compounds.
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