Disclosed by the invention is a heterocyclic compound, an intermediate, and a preparation method therefor and an application thereof. Provided by the invention are a heterocyclic compound as shown in formula I, and a stereoisomer, a geometric isomer, a tautomer, a nitrogen oxide, a hydrate, a solvate, a metabolite, an ester, a pharmaceutically acceptable salt or a prodrug thereof. The heterocyclic compound hasa high P2X3 antagonistic activity, and has good selectivity, low toxicity, good metabolic stability and little taste influence.
本发明公开了一种
杂环化合物、一种
中间体及其制备方法和应用。本发明提供了一种如式 I 所示的
杂环化合物及其立体异构体、几何异构体、同分异构体、
氧化
氮、
水合物、溶液、代谢物、
酯、药学上可接受的盐或原药。该
杂环化合物具有很高的 P2X3 拮抗活性,并且选择性好、毒性低、代谢稳定性好、味道影响小。