Nitrogen-containing heterocyclic carboxamide derivatives represented by the following general formula:
1
wherein ring A is a substituted or unsubstituted pyrazine, pyrimidine, pyridazine or triazine ring; R
1
is O or OH; R
2
is a hydrogen atom, an acyl group or a substituted or unsubstituted carbamoylalkyl or carboxyalkyl group; and the broken line represents a single bond or a double bond; or salts thereof are useful for preventing and treating virus infections and especially influenza virus infections.
以下为一般式所代表的含氮杂环羧酰胺衍
生物:1其中环A为取代或未取代的
吡嗪、
嘧啶、
吡嗪或
三嗪环;R1为O或OH;R2为氢原子、酰基或取代或未取代的
氨基甲基或羧基甲基基团;断裂线代表单键或双键;或其盐,可用于预防和治疗病毒感染,特别是流感病毒感染。