Compounds of the formula (II) ##STR1## or a salt, N-oxide or acyl derivative thereof, wherein Y is a group ##STR2## which is optionaly substituted and which optionally contain a nitrogen atom at one of positions A, B, C, D or E, in which the dotted line represents aromatic rings unless one of the rings contains a nitrogen atom in which case this ring is either aromatic or partially saturated, have antimicrobial properties. Processes for making these compounds, pharmaceutical compositions containing them and the medical use of the compounds are also disclosed.
式(II)的化合物##
STR1##或其盐、N-
氧化物或酰基衍
生物,其中Y是一个组##
STR2##,可选择地被取代,并且可选择地在位置A、B、C、D或E之一含有
氮原子,在这些位置中的虚线代表芳香环,除非其中一个环含有
氮原子,在这种情况下,该环要么是芳香的,要么是部分饱和的,具有抗微
生物特性。还公开了制备这些化合物的方法、含有它们的药物组合物以及这些化合物的医药用途。