This invention provides a carbostyril derivative of the formula (1): ##STR1## where R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5, R.sup.6 and n are as defined, or its salt. This carbostyril derivative or its salt possess an excellent matrix metalloproteinases inhibitory action.
这项发明提供了公式(1)的一种羧基
喹啉衍
生物:##STR1## 其中R.sup.1、R.sup.2、R.sup.3、R.sup.4、R.sup.5、R.sup.6和n如定义,或其盐。该羧基
喹啉衍
生物或其盐具有出色的基质
金属
蛋白酶抑制作用。