Provided are methods for the synthesis of heterocyclic compounds such as benzimidazole carboxylic acid core structures having Formula Ia-2 and their synthetic intermediates: wherein X1, X2, X5, R1, R2 and R4 are as defined herein. Compounds of Formula Ia-2 and their synthetic intermediates can be used to prepare heterocyclic derivatives such as benzimidazole derivatives.
提供了合成
杂环化合物的方法,例如具有Ia-2式
苯并咪唑羧酸核心结构的化合物及其合成中间体,其中X1、X2、X5、R1、R2和R4的定义如本文所述。 Ia-2式化合物及其合成中间体可用于制备杂环衍
生物,例如
苯并咪唑衍
生物。