Pyrido[2,3-d]pyrimidine compounds of formula
wherein:
R¹ is -NHCH(COOR²)CH₂CH₂COOR³, or OR² in which each of R² and R³ is hydrogen or a carboxylic acid protecting group; and
n has a value of from 1 to 3,
are prepared through the reaction of 2,4-diamino-6(1H)-pyrimidone and an activated derivative of a dialdehyde. A typical embodiment utilizes the dinitrile.
式中的
吡啶并[2,3-d]
嘧啶化合物
其中
R¹ 是-NHCH(COOR²)CH₂CH₂COOR³,或 OR²,其中 R² 和 R³ 各为氢或
羧酸保护基团;以及
n 的值为 1 至 3、
通过 2,4-二
氨基-6(1H)-
嘧啶酮与二醛的活化衍
生物反应制备。一个典型的实施方案是使用二腈。