申请人:HOECHST UK LIMITED
公开号:EP0174561A1
公开(公告)日:1986-03-19
A compound of formula I
with R' being an alkyl group substituted by one or more substituents and esters thereof at the 2-carboxy group or at the 8-hydroxy group or both: and salts thereof. Compounds I have antibacterial effect. Various intermediates are described. This compound of the formula I, or an ester at the 2-carboxy group or at the 8-hydroxy group or both or a salt thereof is produced by reacting a compound of formula II or of formula IX
in which R represents a hydrogen atom or a carboxy protecting group, R3 represents an activated carboxylic acid group, R4 represents an alkyl group having 1 to 4 carbon atoms, or a phenyl group which may be unsubstituteo or substituted, R15 represents a phenyl group or an alkyl group having from 1 to 4 carbon atoms, and X represents an oxygen c, sulphur with an amine of the formula III R'NH2 (III), to give a compound of formula I, or an ester therecf of formula la
式 I 的化合物
R'为被一个或多个取代基取代的烷基及其 2-羧基或 8-羟基或两者的酯类:及其盐类。化合物 I 具有抗菌作用。描述了各种中间体。将式 II 或式 IX 的化合物与 2-羧基或 8-羟基或两者的酯或其盐反应,可制得式 I 化合物。
其中 R 代表氢原子或羧基保护基团,R3 代表活化的羧酸基团,R4 代表具有 1 至 4 个碳原子的烷基或苯基(可以是未取代的苯基或取代的苯基),R15 代表苯基或具有 1 至 4 个碳原子的烷基,X 代表氧 c、硫与式 III R'NH2 (III) 的胺反应,得到式 I 的化合物或式 la 的酯。