A Convenient Synthesis of Novel 2,8-Disubstituted Pyrido[3,4-b]pyrazines Possessing Biological Activity
作者:Pascal Marchand、Maud Antoine、Matthias Gerlach、Eckhard Günther、Tilmann Schuster、Michael Czech、Irene Seipelt
DOI:10.1055/s-0031-1289613
日期:2012.1
8-disubstituted pyrido[3,4-b]pyrazines, by initial condensation reaction between suitable diaminopyridines and α-keto aldehydes equivalents, has been developed. Focusing on the functionalization on C-8, 2-aryl-8-bromo- and 8-amino-2-arylpyrido[3,4-b]pyrazines have been synthesized. Anilines, amides, and ureas have been introduced at the 8-position from key intermediates. 2,8-Disubstituted pyrido[3,4-b]pyrazines
通过合适的二氨基吡啶与α-酮醛等价物之间的初步缩合反应,已开发出一种选择性合成2,8-二取代的吡啶并[3,4- b ]吡嗪的方法。着眼于在C-8上的官能化,已经合成了2-芳基-8-溴-和8-氨基-2-芳基吡啶并[3,4- b ]吡嗪。苯胺,酰胺和脲已从关键中间体的8位引入。发现由此制备的2,8-二取代的吡啶并[3,4- b ]吡嗪具有生物学意义。 吡啶并[3,4- b ]吡嗪 -吡啶-硫缩醛-苯乙二醛-区域选择性-缩合