申请人:Imperial Chemical Industries, PLC
公开号:US04508721A1
公开(公告)日:1985-04-02
Heterocyclic compounds of the formula: ##STR1## wherein the dotted line in the pyridazine nucleus indicates that a double bond is optional in this position, and wherein Py is a 2-, 3- or 4- pyridinyl group which is unsubstituted, or which bears one or two substituents selected from halogen, cyano, hydroxymethyl, carboxy, carbamoyl and alkyl, alkoxy, alkoxycarbonyl, alkylcarbamoyl and dialkylcarbamoyl wherein each alkyl or alkoxy has up to 4 carbon atoms, or which bears an oxygen substituent, either as an N-oxide or as an oxo substituent on the 2- or 4- carbon atom (that is, such as to form a pyridone); and acid-addition salts thereof; processes for their manufacture and pharmaceutical compositions containing them. The compounds possess cardiotonic and/or antihypertensive properties.
该化合物为杂环化合物,其化学式为:##STR1## 其中,吡嗪环中的虚线表示该位置可以选择性地具有双键,Py为2-、3-或4-吡啶基团,可以是未取代的,也可以带有一或两个卤素、氰基、羟甲基、羧基、氨基和烷基、烷氧基、烷氧羰基、烷基氨基和二烷基氨基取代基,其中每个烷基或烷氧基含有最多4个碳原子,或者带有氧原子取代基,可以是N-氧化物或者在2-或4-碳原子上带有氧代取代基(即形成吡啶酮);以及它们的酸加成盐。这些化合物具有心效和/或降压作用。制造它们的方法和含有它们的药物组合物也在本发明范围内。