The present invention relates to a compound of the formula ##STR1## wherein X.sup.1, R.sup.1, R.sup.2, OP, R.sup.3, R.sup.4, R.sup.5, R.sup.6, and R.sup.0 are as described herein, and their pharmaceutically acceptable salts thereof carrying an acidic andr basic substituent. The compound of formula I as well as their pharmaceutically acceptable salts inhibit DNA gyrase activity in bacteria and possess antibiotic, especially antibacterial activity against microorganisms and can be used in the control or prevention of infectious diseases.
本发明涉及一种化合物,其
化学式为##STR1##其中X.sup.1,R.sup.1,R.sup.2,OP,R.sup.3,R.sup.4,R.sup.5,R.sup.6和R.sup.0如本文所述,并且其药学上可接受的酸性和碱性取代物的盐。化合物I及其药学上可接受的盐能够抑制细菌中的
DNA酶活性,并具有抗生素,特别是抗菌活性,可用于控制或预防传染病。