The chemical compound which possesses anti-bacterial activity is disclosed. The said chemical compound (the stereoisomer, the salt and the professional drag which are allowed pharmacy are included) to possess structural (i) below, in formula, Q, Q, Q, R, R, R, Z and Z as in definition are in this bill. It discloses also the manner which it is related with the preparation and use of the medicine constituent which includes that kind of chemical compound and that kind of chemical compound. Use of that kind of chemical compound to which this invention the new amino glycoside chemical compound which possesses anti-bacterial activity (the stereoisomer, includes the salt and the professional drag which are allowed pharmacy and), and in remedying of bacterial infection is dealt with.抗菌活性を有する化合物を開示している。該化合物(その立体異性体、薬学的に許容される塩およびプロドラッグを含む)は以下の構造(I)を有し、式中、Q1、Q2、Q5、R1、R2、R3、Z1およびZ2は本明細書に定義の通りである。そのような化合物ならびにそのような化合物を含む医薬組成物の調製および使用と関連する方法も開示している。本発明は、抗菌活性を有する新規のアミノグリコシド化合物(その立体異性体、薬学的に許容される塩およびプロドラッグを含む)、ならびに細菌性感染の治療におけるそのような化合物の使用を対象としている。