2-phenylpyridine derivatives

The present invention relates to 2-phenyl pyridine derivative or a salt thereof represented by the following general formula (I). The compounds of the present invention, has a good xanthine oxidase inhibitory effect and uric acid-lowering effect, useful hyperuricemia, gout, inflammatory bowel disease, diabetic nephropathy, as a therapeutic or prophylactic agent, such as diabetic retinopathy it is. (Symbols in the formula have the following meanings. R X: -O -, - N ( R 8) - or -S-, Here, the groups represented by R Y: bond or the like, R Here, X-is )