closely resemble the structure of several marketed pharmaceuticals. The reaction of β,γ-unsaturated γ-alkoxy-α-keto esters with N-unsubstituted 5-aminopyrazoles was investigated. The reaction proceeds with high regioselectivity and is considered as an effective method for the preparation of newpyrazolo[1,5-a]pyrimidines bearing an ester function in the 7-position. The obtained drug-like compounds have
摘要 研究了β,γ-不饱和γ-烷氧基-α-酮酸酯与N-未取代的5-氨基吡唑的反应。该反应以高区域选择性进行,并且被认为是制备在7位具有酯功能的新型吡唑并[1,5- a ]嘧啶的有效方法。所获得的类药物化合物非常类似于几种市售药物的结构,因此在药物化学上具有巨大的潜力。 研究了β,γ-不饱和γ-烷氧基-α-酮酸酯与N-未取代的5-氨基吡唑的反应。该反应以高区域选择性进行,并且被认为是制备在7位具有酯功能的新型吡唑并[1,5- a ]嘧啶的有效方法。所获得的类药物化合物非常类似于几种市售药物的结构,因此在药物化学上具有巨大的潜力。
[EN] TRIAZOLOPYRIDAZINE DERIVATIVE, PREPARATION METHOD THEREFOR, PHARMACEUTICAL COMPOSITION THEREOF, AND USE THEREOF<br/>[FR] DÉRIVÉ DE TRIAZOLOPYRIDAZINE, SON PROCÉDÉ DE PRÉPARATION, COMPOSITION PHARMACEUTIQUE ASSOCIÉE ET UTILISATION CORRESPONDANTE<br/>[ZH] 三唑并哒嗪类衍生物、其制备方法、药物组合物和用途
A compound represented by the formula (I):
wherein each symbol is as described in the SPECIFICATION, or a salt thereof has a PDE2A inhibitory action, and is useful as a prophylactic or therapeutic drug for schizophrenia, Alzheimer's disease and the like.