Novel 1,8-Naphthyridine derivatives, and process for preparation thereof
申请人:Dainippon Pharmaceutical Co., Ltd.
公开号:EP0132845A2
公开(公告)日:1985-02-13
The present invention relates to a 1,8-naphthyridine derivative of the formula
wherein R1, R2 and R3 are the same or different and each hydrogen or lower alkyl having 1 to 5 carbon atoms; and esters thereof and salts thereof and processes for preparation thereof. These compounds show excellent antibacterial activity and are useful antibacterial agents.
Disclosed is a novel quinazoline compound. Specifically, disclosed are a compound represented by the formula (I) and a pharmacologically acceptable salt.