| 摘要 |
<p>Compounds of the formula <CHEM> and pharmaceutically acceptable acid addition salts thereof, wherein R<1> is hydrogen, (C1-C6)alkyl, or a pharmaceutically acceptable cation; R<2> is ethyl, fluoroethyl, p-fluorophenyl, p-hydroxyphenyl or cyclopropyl; R<3> is fluorine or hydrogen; and R<4> is <CHEM> wherein n is 1 or 2 and R<5> is hydrogen or (C1-C3)alkyl are disclosed. Also disclosed are antibacterial pharmaceutical compositions comprising the foregoing compounds, methods of using the compounds in treating bacterial infections, and intermediates for the preparation of the compounds.</p> |
