Tandem Michael-addition/cyclization synthesis and EGFR kinase inhibition activity of pyrido[2,3-<i>d</i>]pyrimidin-7(8<i>H</i>)-ones
作者:Eric E. Boros、James B. Thompson、Edgar R. Wood、O. Bradley McDonald、Timothy D. Spitzer、Andrea M. Sefler、Bryan R. Reep
DOI:10.1002/jhet.5570410308
日期:2004.5
5-Methoxy and 5-anilinopyrido[2,3-d]pyrimidin-7(8H)-ones 2a-2f were obtained by a tandem Michael addition-cyclization reaction of methanol and anilines with pyrimidinylpropynoate 5. Methoxy derivative 2a was obtained in 62% yield by treatment of 5 with methanol and potassium carbonate. Anilino derivatives 2b-2f were prepared in 31–71% yields by reacting 5 with the corresponding anilines in refluxing
5-甲氧基和5- anilinopyrido [2,3- d ]嘧啶-7(8 ħ) -酮2A-2F由甲醇和苯胺与pyrimidinylpropynoate串联迈克尔加成环化反应,得到5.甲氧基衍生物2A是在获得通过用甲醇和碳酸钾处理5,产率为62%。通过使5与相应的苯胺在回流的甲醇中反应,可以以31-71%的产率制备Anilino衍生物2b-2f。该方法在一锅中完成了迈克尔加成和吡啶并嘧啶酮环的形成,无需色谱即可以合理的收率获得所需的产物。丙酸酯5在这些条件下不与4-氰基苯胺反应。的反应5与2-氨基吡啶,得到意想不到arylpyrido [2,3- d ]嘧啶酮8以58%的产率和反应5与咪唑,得到迈克尔加成物9在69%的产率。化合物2a和5是表皮生长因子受体(EGFR)酪氨酸激酶的亚微摩尔抑制剂。