The present invention relates to novel quinoline derivatives of formula (I): ##STR1## wherein R.sub.1, R.sub.2, R.sub.3, X, Y and Z are defined as in the specification, and pharmaceutically acceptable acid addition salts thereof, and also to processes for preparing these compounds. The present invention also provides an antibacterial composition comprising a compound of formula (I) or its acid addition salt as an active ingredient and pharmaceutically acceptable excipient. The novel quinoline derivatives of the present invention have an excellent antibacterial activity against bacteria or bacteroides.
本发明涉及具有以下结构的新奎诺林衍
生物(I):其中R1、R2、R3、X、Y和Z如规范中所定义,以及其药学上可接受的酸盐,以及制备这些化合物的方法。本发明还提供一种抗菌组合物,包括式(I)的化合物或其酸盐加合物作为活性成分和药学上可接受的赋形剂。本发明的新奎诺林衍
生物对细菌或类杆菌具有出色的抗菌活性。