| abstract |
<CHEM> The present invention relates to a compound of formula (I) (wherein R<1> and R<2> represent an aryl group, a heterocyclic group, an alkyl group, an alkenyl group and the like which are optionally substituted, R<3> represents a hydrogen atom or a hydroxyl group, and X<1> and X<2> represent an oxygen atom or a sulfur atom, or a nitrogen atom which may be substituted), a pharmaceutically acceptable derivative thereof or a salt thereof. The present invention also relates to a pharmaceutical composition comprising a compound described above as an active ingredient for the prevention or treatment of bacterial infections. The present invention includes the use of a compound described above in order to prepare a medicament effective in the prevention or treatment of bacterial infections. The present invention is concerned with a method for the prevention or treatment of bacterial infections in warm-blooded animals comprising administering a pharmacologically effective amount of a compound described above to them. |