The invention relates to compounds of formula Iwherein R0represents H or OH R1represents alkoxy U and W represent N, V represents CH and R2represents H or F, or U and V represent CH, W represents N and R2represents H or F, or U and V represent N, W represents CH and R2represents H, or U represents N, V represents CH, W represents CRaand R2represents H Rarepresents CH2OH or alkoxycarbonyl A represents the group CH=CH-B or a binuclear heterocyclic system D, B representing a mono- or di-substituted phenyl group wherein the substituents are halogen atoms and D representing one of the following groupswherein Z represents CH or N, and Q represents O or S and to salts of such compounds.These compounds are useful as antibacterial agents.本發明係關於式I化合物其中R0表示H或OH;R1表示烷氧基;U及W表示N,V表示CH且R2表示H或F;或U及V表示CH,W表示N且R2表示H或F;或U及V表示N,W表示CH且R2表示H;或U表示N,V表示CH,W表示CRa且R2表示H;Ra表示CH2OH或烷氧基羰基;A表示基團CH=CH-B或雙核雜環系統D,B表示經單取代或雙取代之苯基,其中取代基為鹵原子,且D表示以下基團中之一者其中Z表示CH或N,且Q表示O或S;且係關於該等化合物之鹽。該等化合物適用作抗菌劑。
