申请人:Chugai Seiyaku Kabushiki Kaisha
公开号:US05051509A1
公开(公告)日:1991-09-24
Novel compounds of the present invention are represented by the general formula (1) ##STR1## wherein R.sub.1 is hydrogen atom or amino, R.sub.2 is fluorine atom or methoxy, R.sub.3 is hydrogen atom or a lower alkyl having 1 to 3 carbon atoms, and n is 0 or 1. The compounds of the general formula (1) exhibit higher antibacterial activity with fewer side-effects than known quinolone antibiotics such as ofloxacin and norfloxacin. Further, the compounds having the general formula (1) have reduced phototoxicity which normally accompanies 6,8-defluoroquinoline antibiotics.
本发明的新型化合物由通式(1)表示:##STR1##其中R1是氢原子或氨基,R2是氟原子或甲氧基,R3是氢原子或含有1至3个碳原子的低级烷基,n是0或1。通式(1)的化合物表现出比已知的喹诺酮类抗生素如氧氟沙星和诺氟沙星更高的抗菌活性和更少的副作用。此外,具有通式(1)的化合物减少了通常伴随6,8-二氟喹啉类抗生素的的光毒性。