A compound of the structural formula I, a pharmaceutically acceptable salt, prodrug or derivative thereof, characterized in that R1 is selected from H, a linear or branched (C1-C5) alkyl group and a COR4 group; R2 is selected from H, a linear or branched (C1-C5) alkyl group and a COR5 group; R3 is selected from H, a linear or branched (C1-C5) alkyl group, a linear or branched (C1-C5)- O-alkyl group, a cycloalkyl of (C5-C6) carbon atoms, an aryl group, and an aryl (C1-C5) alkyl group wherein the aryl group can be an unsubstituted aryl or an aryl substituted with one or more R6 groups and an NHCOR5 group, or the R2 and R3 groups together with N may form a substituted or unsubstituted piperidine, morpholine or piperazine group; R4 is selected from H and a (C1-C5) alkyl group; R5 is selected from an unsubstituted aryl group or an aryl group substituted with one or more R6, linear or branched (C1-C5) alkyl or pyridyne groups and a pyridine group; R6 is selected from (C1-C5) alkyl groups, halogen and nitro, provided that R1, R2 and R3 are not H atoms at the same time. The compounds present antibacterial activity. Process for their preparation and pharmaceutical compositions comprising them are also disclosed.
化合物的结构式I,其药学上可接受的盐、前药或衍
生物,其特征在于:R1选自H、线性或支链(C1-C5)烷基和COR4基团;R2选自H、线性或支链(C1-C5)烷基和COR5基团;R3选自H、线性或支链(C1-C5)烷基、线性或支链(C1-C5)-O-烷基、(C5-C6)碳原子的环烷基、芳基和芳基(C1-C5)烷基,其中芳基可以是未取代的芳基或带有一个或多个R6基团和NHCOR5基团的取代芳基,或者R2和R3基团与N一起可以形成取代或未取代的
哌啶、吗啉或
哌嗪基团;R4选自H和(C1-C5)烷基;R5选自未取代的芳基或带有一个或多个R6、线性或支链(C1-C5)烷基或
吡啶基团和
吡啶基团的取代芳基;R6选自(C1-C5)烷基、卤素和硝基,前提是R1、R2和R3不能同时为H原子。这些化合物具有抗菌活性。还公开了它们的制备方法和包含它们的制药组合物。