Divergent synthesis of novel 9-deazaxanthine derivatives via late-stage cross-coupling reactions
作者:Francesca Bartoccini、Giovanni Piersanti、Marco Mor、Giorgio Tarzia、Patrizia Minetti、Walter Cabri
DOI:10.1039/c2ob26516h
日期:——
A small library of 8-substituted 9-deazaxanthines has been prepared by late-stage diversification of an 8-bromo-9-deazaxanthine. By utilizing palladium-catalyzed cross-coupling reactions a single key precursor can be transformed into a variety of 8-substituted-9-deazaxanthine compounds. Three key 8-bromo-9-deazaxanthine intermediates were efficiently prepared from commercially available 6-chlorouracil in six steps.
通过对8-溴-9-去氨黄素的后期多样化,制备了一小库8-取代的9-去氨黄素。利用钯催化的交叉偶联反应,可以将一个单一的关键前体转化为多种8-取代的9-去氨黄素化合物。三个关键的8-溴-9-去氨黄素中间体通过六步反应高效地从商业可得的6-氯尿嘧啶制备而成。