Acylacetate and amidine intermediates for pyrimidone compounds, and their preparation
申请人:YAMANOUCHI PHARMACEUTICAL CO. LTD.
公开号:EP0180745A1
公开(公告)日:1986-05-14
Compounds of formulae II and III below are useful as intermediates for the preparation of pyrimidones of formula I below which are gastric acid secretion inhibitors and have other medical utilitv:
wherein R, represents a hydrogen atom, an alkyl group, a lower alkenyl group, a lower alkinyl group, a phenyl group, a cycloalkylmethyl group, an unsubstituted or substituted aralkyl group, or the group
wherein A represents a lower alkylene group and R3 and R. are the same or different lower alkyl groups or combine to form with the adjacent nitrogen atom a piperidine or pyrrolidine ring; R2 represents a hydrogen atom, a lower alkyl group or a trifluoromethyl group; Y represents a heterocyclic group of the formula:
or
wherein R represents a hydrogen atom or a lower alkyl group; B represents an oxygen atom or a sulfur atom; m represents zero or an integer of 1 to 3; and n represents an integer of 1 to 3.
下式 II 和 III 的化合物可用作制备下式 I 的嘧啶酮的中间体,下式 I 的嘧啶酮是胃酸分泌抑制剂,并具有其他医疗用途:
其中 R 代表氢原子、烷基、低级烯基、低级烷基、苯基、环烷基甲基、未取代或取代的芳基或基团
其中 A 代表低级亚烷基,R3 和 R. 是相同或不同的低级烷基,或与相邻的氮原子结合形成哌啶或吡咯烷环;R2 代表氢原子、低级烷基或三氟甲基;Y 代表式中的杂环基团:
或
其中 R 代表氢原子或低级烷基;B 代表氧原子或硫原子;m 代表零或 1 至 3 的整数;n 代表 1 至 3 的整数。