Disclosed are: a compound represented by general formula (I), a pharmaceutically acceptable salt thereof or a solvate of the same； a medicinal composition comprising the same； use of the same for preventing or treating infectious diseases； and a method for preventing or treating infectious diseases, said method comprising using the same. The compound represented by general formula (I), which has an antibacterial activity against both of gram-positive bacteria and gram-negative bacteria, is useful for preventing or treating infectious diseases caused by these bacteria.本發明係揭示以下一般式(I)所示之化合物或其藥學上可容許的鹽或其溶媒合物，以及含有該等之醫藥組成物、該等用於感染症的預防或治療之用途、使用該等之感染症之預防或治療方法。一般式(I)所示之化合物對革蘭氏陽性菌及革蘭氏陰性菌兩者具有抗菌活性，在此等菌所引發之感染症的預防或治療中屬有用。
