| 摘要 |
FIELD: chemistry. ^ SUBSTANCE: invention relates to compounds of general formula , where R1 denotes OH, OPO3H2 or OCOR5; R2 denotes H, OH or OPO3H2; A denotes N or CR6; R3 denotes fluorine; R4 denotes H, C1-3alkyl or C3-6cycloalkyl; R5 denotes an alanine residue; R6 denotes H, C1-6alkoxy group or halogen; and n=0 or 1; and to pharmaceutically acceptable salts of compounds of formula I. The invention also relates to a pharmaceutical composition having antibacterial activity, and to use of compounds of formula I to obtain a medicinal agent for preventing or treating bacterial infections. ^ EFFECT: compounds of formula I, having antibacterial activity. ^ 14 cl, 3 dwg, 2 tbl, 14 ex |
