A facile and concise route to (hydroxybenzoyl)pyrido[2,3- d]pyrimidine heterocycle derivatives: synthesis, and structural, spectral and computational exploration

一种简便易行的（羟基苯甲酰）吡啶并[2,3-d]嘧啶杂环衍生物的合成及结构、光谱和计算探索