作者:Samuel E Watson、Farrah Khandkar、My Bui、Anatoly Markovich、Edward C. Taylor
DOI:10.1080/00397919808004942
日期:1998.10
and medicinally important pyrrolo[2,3-d]pyrimidines has been developed starting from readily available acyclic aldehydes. A very efficienttwo step sequence involving a Knoevenagel condensation followed by copper mediated 1,4-conjugate of vinyl magnesium bromide sets up the acyclic precursor. Then, guanidine cyclization followed by a palliduim catalyzed amination reaction or ozonolytic cleavage of the
摘要 从容易获得的无环醛开始,已经开发出一种短而简洁的途径来制备具有生物活性和药用价值的吡咯并[2,3-d]嘧啶。一个非常有效的两步序列,包括 Knoevenagel 缩合,然后是铜介导的乙烯基溴化镁的 1,4-共轭物,建立无环前体。然后,胍环化,然后是钯催化的胺化反应或乙烯基取代基的臭氧裂解,然后是胍环化和分子内亚胺形成,完成合成。