| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide new broad-spectrum antimicrobial agents, which are effective against resistant. <P>SOLUTION: The present invention relates to: compounds represented by the following formula I, wherein R is selected from hydrogen, hydroxy, and alkoxy, R<SB POS="POST">2</SB>is hydrogen, R<SB POS="POST">3</SB>and R<SB POS="POST">4</SB>are independently selected from hydrogen, halogen, amino, hydroxy, alkoxy or the like, R<SB POS="POST">5</SB>is selected from hydrogen, halogen, alkyl or the like, R<SB POS="POST">6</SB>is independently alkyl, hydroxy, alkoxy or the like; or an optical isomer, diastereomer or enantiomer thereof; and a pharmaceutically acceptable salt, hydrate, or prodrug thereof. <P>COPYRIGHT: (C)2012,JPO&INPIT |
