Thiazolo[5,4-f]quinoline-8-carboxylic acid derivatives having either the general formula (I): ##SPC1## wherein R.sub.1 is a lower alkyl group, a lower alkenyl group or a benzyl group; or the general formula (III-a): ##SPC2## Wherein R.sub.3 is a lower alkyl group and X is a halogen atom; and methods for the preparation thereof. The compounds of the general formula (I) are useful as antibacterial agents against gram-negative and gram-positive bacteria. The compounds of the general formula (III-a) are useful as antifungal agents against eumycetes and also as an intermediate in a preparation of the compounds of the general formula (I).
具有通式(I)的Thiazolo[5,4-f]quinoline-8-carboxylic acid衍
生物:其中R.sub.1是较低的烷基、较低的烯基或苄基;或通式(III-a)的衍
生物:其中R.sub.3是较低的烷基,X是卤素原子;以及其制备方法。通式(I)的化合物可用作针对革兰氏阴性和革兰氏阳性细菌的抗菌剂。通式(III-a)的化合物可用作针对真菌的抗真菌剂,同时也可作为通式(I)化合物制备的中间体。