Convenient Selective Synthesis of Substituted Pyrido[2,3-d]pyrimidones and Annulated Derivatives
作者:Wafaa S. Hamama、Mohamed A. Ismail、Hana’a A. Al-Saman、Hanafi H. Zoorob
DOI:10.1515/znb-2007-0115
日期:2007.1.1
6-carboethoxy-3,5-diphenyl-2-cyclohexenone (13) or 2,6- bis(phenylmethylidene)cyclohexanone (15) afforded the corresponding pyrimido[4,5-d]quinoline- 2,4-diones 12, 14 and 16, respectively. Furthermore, a pyrido[2,3-d]pyrimidine incorporating 3,2’- bis(quinoline) derivative 18 was synthesized. Annulation of pyrido[2,3-d]pyrimidine with pyrazole or imidazole moieties was achieved via reaction of 1 with benzylidene
6-氨基尿嘧啶 (1) 与适当的 α,β-不饱和酮反应,分别得到相应的吡啶并[2,3-d]嘧啶-2,4-二酮 3、6、8 和 10。1 用水杨醛、6-carboethoxy-3,5-diphenyl-2-cyclohexenone (13) 或 2,6-bis(phenylmethylidene)cyclohexenone (15) 处理得到相应的嘧啶并[4,5-d]quinoline-2, 4-二酮分别为 12、14 和 16。此外,合成了并入了3,2'-双(喹啉)衍生物18的吡啶并[2,3-d]嘧啶。吡啶并[2,3-d]嘧啶与吡唑或咪唑部分的环化是通过1与吡唑酮、咪唑酮或3-碳乙氧基香豆素(23)的亚苄基衍生物反应分别得到21、22和24来实现的。