ALKYL 7, 8 - DIHALO - 4 - OXO 1, 4 - DIHYDROBENZO B 1,8 NAPHTHYRIDINE - 3 - CARBOXYLATES AND THEIR PREPARATION

摘要

New benzo[b][1,8]naphthyridine derivatives of general formula I in which R1 is a hydrogen atom or an alkyl or hydroxyalkyl radical, R2 is a hydrogen atom or an alkyl, 3 to 6 C cycloalkyl or alkylamino radical and R3 is a hydrogen atom or an alkyl radical, their salts, their preparation and the compositions which contain them. These new products are useful as antimicrobial agents. IMAGE