The present invention relates to new thiazolo\x9b3,2-a!quinoline and thiazolo\x9b3,2-a!naphthyridine derivatives of the general formula (I) ##STR1## in which R.sup.1, R.sup.2, Z and X have the meaning indicated in the description, processes for their preparation and their use in antibacterial compositions.
                            本发明涉及一种新的
噻唑\x9b3,2-a!
喹啉和
噻唑\x9b3,2-a!
萘啉衍
生物,其一般式为(I) ##STR1## 其中,R.sup.1、R.sup.2、Z和X的含义如说明书所示,以及它们在抗菌组合物中的制备和使用过程。