| 摘要 |
PROBLEM TO BE SOLVED: To provide naphthyridine and quinoline derivatives used for medicinal application. SOLUTION: The naphthyridine and quinoline derivatives are represented by general formula (1) [wherein, OR<1> , R<2> , R<3> , R<4> , A and Q are each a group described in the specification]. The medicinal composition such as a painkiller, an aldose reductase inhibitor, and an agent for preventing and treating complication of diabetes contains the derivative.
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