| abstract |
This invention provides a novel oxazolidinone derivative represented by Formula I or pharmaceutical acceptable salts thereof: ##STR1## wherein R 1 is substituted or unsubstituted 2-pyrimidinyl, 4-pyrimidinyl, or 3-pyridazinyl; X is hydrogen or fluoro; R 3 is C 1-4 alkyl, C 1-4 alkoxy, C 3-6 cycloalkyl or C 1-4 alkylamino or dialkylamino. The compounds are useful antimicrobial agents. |