OXAZOLIDINONE DERIVATIVES AND PHARMACEUTICAL COMPOSITIONS BASED ON THEREOF Russian patent published in 2003 - IPC

FIELD: organic chemistry, pharmacy. SUBSTANCE: invention relates to novel oxazolidinone derivatives of the formula (I) , their enantiomers or their pharmaceutically acceptable salts wherein R means hydrogen atom or C_1-6-alkyl optionally substituted with group taken among cyano-, fluorine, chlorine atom, hydroxy- or carbamoyl; R₁ and R₂ represent independently fluorine or hydrogen atom; R₃ represents C_1-6-alkyl; X represents oxygen or sulfur atom. Invention relates to pharmaceutical compositions eliciting an antibacterial effect and containing compound of the formula (I) as an active component and pharmaceutically acceptable carrier. Invention provides preparing the novel compound eliciting an antibacterial effect. EFFECT: valuable medicinal property of derivatives. 8 cl, 1 tbl, 5 ex