The present invention relates to antibacterial and antimycobacterial drug compounds of formula (I). The present invention also relates to pharmaceutical formulations of antibacterial drug compounds. The invention also relates to the use of such derivatives in the treatment of bacterial infections and methods of treatment of bacterial infections. The present invention is also directed to antibacterial drug compounds that can treat bacterial infections that are difficult to treat with existing drug compounds, such as infections caused by resistant bacterial or mycobacterial strains. [Selection figure] None本発明は、式(I)の抗菌性及び抗ミコバクテリア性薬化合物に係る。本発明は、抗菌性薬化合物の医薬製剤にも係る。本発明は、細菌感染症の治療における係る誘導体の使用及び細菌感染症の治療法にも係る。本発明は、現在、存在する薬化合物での治療が困難である細菌感染症、例えば、耐性の細菌又はミコバクテリアの菌株によって生ずる感染症を治療できる抗菌性薬化合物も対象とする。【選択図】 なし