Oxazolidinone derivatives and pharmaceutical compositions containing them
 The present invention provides agents having high antimicrobial activity for preventing and treating infectious diseases. Thus, the present invention provides novel oxazolidinone derivatives represented by chemical formula (I), or pharmaceutically acceptable salts thereof, as well as antimicrobial compositions containing said derivatives or salts thereof as active ingredients. ##STR1## 
Pharmacia & Upjohn Company
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Hiroyoshi Mikio Kiyotaka
Yamada Taniguchi Munesada