ethyl 1-benzyl-4-hydroxy-2-oxo-1,2-dihydro-1,5-naphthyridine-3-carboxylate 、
邻氨基苯磺酰胺 、 ethyl 1-n-butyl-4-hydroxy-2-oxo-1,2-dihydro-1,8-naphthyridine-3-carboxylate 生成 N-[2-(aminosulfonyl)phenyl]-1-benzyl-4-hydroxy-2-oxo-1,2-dihydro-1,5-naphthyridine-3-carboxamide