Tricyclic compounds, a process for their production and pharmaceutical compositions containing said compounds.

摘要

Tricyclic compounds of formula (I) <CHEM> wherein: Z represents an oxygen atom or a methylene group, X1 represents a hydrogen atom or a halogen atom, R1 represents a cyclic amino group which may contain additonal hetero atom(s) of N,S and O and may be substituted with one or more substituents selected from the group consisiting of hydroxyl, amino, alkyl, mono- or di-alkylamino, hydroxyalkyl and aminoalkyl, and physiologically acceptable salts thereof, having antibacterial activity.