An unprecedented Pd-catalyzed decarboxylative coupling reaction of aromatic carboxylic acids in aqueous medium under air: synthesis of 3-aryl-imidazo[1,2-a]pyridines from aryl chlorides
An efficient and practical protocol for palladium-catalyzeddecarboxylative arylation of imidazo[1,2-a]pyridine-3-carboxylic acids with aryl chlorides has been developed. Note that the reaction could proceed smoothly without an additive in aqueous medium under an ambient atmosphere, and the addition of H2O could effectively promote the decarboxylative arylation. Particularly noteworthy is that these
已开发出一种有效,实用的方案,用于钯催化的咪唑并[1,2 - a ]吡啶-3-羧酸与芳基氯化物的脱羧芳基化反应。注意,在环境气氛下在水性介质中没有添加剂的情况下反应可以顺利进行,并且H 2 O的添加可以有效地促进脱羧芳基化。特别值得注意的是,这些结果代表了Pd催化的(杂)芳香族羧酸在水性介质中在空气中的P催化脱羧偶联反应的第一个实例,以及3-芳基-咪唑并[1,2- a]合成的第一个成功实例。吡啶使用廉价的各种芳基氯化物和杂芳基氯化物作为起始原料。
FGFR pharmacophore compounds
申请人:Astex Therapeutics Ltd.
公开号:US08131527B1
公开(公告)日:2012-03-06
The present invention relates to FGFR pharmacophores, and in particular to compounds which are capable of binding to FGFR with greater affinity than their binding to VEGFR and methods of identifying such compounds using the pharmacophore. The present invention further relates to compositions, methods and uses of the compounds and the pharmacophores disclosed herein.
Dual ligand approach increases functional group tolerance in the Pd-catalysed C–H arylation of <i>N</i>-heterocyclic pharmaceuticals
作者:Igor Beckers、Aram Bugaev、Dirk De Vos
DOI:10.1039/d2sc04911b
日期:——
While C–Harylation enables the direct conversion of (hetero)aromatics without preinstalled functional or directing groups, its functional group tolerance should be increased to be viable in late-stage cross-couplings. In this work, we report on a dual ligand approach that combines a strongly coordinating phosphine ligand with a chelating 2-hydroxypyridine for the highly robust C–Hcoupling of bicyclic
(37). Here we present the synthesis of new inhibitors of Aurora Bkinase, which is an important target for cancer therapy through mitosis regulation. The biologically oriented synthesis yielded several nanomolar inhibitors. The optimized compound CJ2-150 (37) showed a non-ATP competitive allosteric mode of action in a mixed-type inhibition for Aurora Bkinase. Molecular docking identified a probable binding