| 摘要 |
For use in treating or preventing microbial infection of the circulatory, digestive, or respiratory system of an animal, a compound selected from benzoquinolizine carboxylic acids and their derivatives corresponding to the formula: <IMAGE> where each Y is a lower alkyl, lower alkoxy, halegeno, hydroxyl, nitro, cyano, trifluoromethyl, amino, lower alkanamido, trifluoracetamido or lower N,N-dialkylamino radical; each R is a methyl, ethyl or trifluoromethyl radical; n is 0, 1 or 2 and, when n is equal to 2, Y can be a, methylene-dioxy (-OCH2O-) or ethylenedioxy (-OCH2CH2O-) radical connected to adjacent positions of the nucleus; m is 0, 1 or 2 and, when R is a trifluoromethyl radical, m equals 1. |
