Pyrido (3,2,1-ij) -1,3,4-benzoxadiazina, process for their preparation, pharmaceutical preparations and corresponding intermediates used in the process.

摘要

The invention relates to tricyclic compounds general formula (I), wherein R1 is a hydrogen atom or a protecting group carboxy, R2 is an atom of hydrogen or a lower alkyl substituted IF NECESSARY FOR A halogen atom , R3 and R4 are each independently a hydrogen atom or a radical lower alkyl substituted by a hydroxy group or an amino; X is a halogen atom; R5 and R6 are, independently of one another, a hydrogen atom or an alkyl radical CASE IF REPLACED BY A GROUP hydroxy, lower alkoxy group or an amino R5, R6 and R7 are as defined in the invention. Process for their preparation and pharmaceutical preparations containing them. FINISHED GOODS PRESENTED antibacterial activity.