A series of 8-hydroxy-1,6-naphthyridin-5(6H)-one-7-carboxamides 1 and the isomeric 5-hydroxy-1,7-naphthyridin-8(7H)-one-6-carboxamides 2 were synthesized. N-Lactam unsubstituted compounds 1a-c and 2a,b were obtained by alkoxide-induced rearrangement of the corresponding quinolinimidoacetamides 3. Compounds 1e,f and 2e,f were synthesized by heterocyclization of the corresponding quinolinamic esters
一系列的8-羟基-1,6-
萘啶5(6 H)-one-7-羧酰胺1和异构体5-羟基-
1,7-萘啶8(7 H)-one-6-羧酰胺2被合成。N-内酰胺未取代的化合物1a-c和2a,b是通过醇盐诱导的相应
喹啉亚
氨基乙酰胺3的重排而获得的。通过相应的
喹啉酸酯6和7的杂环化合成化合物1e,f和2e,f。光谱性质(uv,ir,1 H和13C nmr和ms)进行了分析,并证实了所提出的结构。