New 7-dialkylamino-1-substituted-6-halogeno-4-oxo-1,4-dihydroquinoline-3 carboxylic acids of the formula: ##STR1## wherein the R.sub.1 substituent is methyl, ethyl, vinyl or allyl and non-toxic pharmaceutically acceptable acid addition salts thereof. These compounds are useful as antibacterial agents. Also disclosed are processes for preparing the compounds.
新的7-二烷基
氨基-1-取代-6-卤代-4-氧基-1,4-二氢
喹啉-3-羧酸的
化学式如下:其中R.sub.1取代基为甲基、乙基、
乙烯基或烯丙基,以及其非毒性药用酸盐。这些化合物可用作抗菌剂。还公开了制备这些化合物的方法。