申请人:Beecham Group Limited
公开号:US04350703A1
公开(公告)日:1982-09-21
Compounds are described of the formula (II): ##STR1## wherein R.sub.1 is a group such that CO.sub.2 R.sub.1 is an ester group; A.sub.1 is a hydrogen atom; and A.sub.2 is a group CR.sub.2 R.sub.3 R.sub.4 wherein R.sub.2 is a hydrogen atom or a hydroxyl group; R.sub.3 is a hydrogen atom or a lower alkyl group; and R.sub.4 is a hydrogen atom or a lower alkyl group, a benzyl group, a phenyl group or is joined to R.sub.3 to form part of a C.sub.5-7 carboxylic ring or is a group of the formula CH(OH)R.sub.5 or CHX wherein R.sub.5 is a hydrogen atom or lower alkyl group and X is an oxygen atom or a CR.sub.6 R.sub.7 group where R.sub.6 is a hydrogen atom or a lower alkyl, phenyl, CN, CO.sub.2 R.sub.8 where R.sub.8 is a lower alkyl, phenyl or benzyl group and R.sub.7 is a hydrogen atom or a lower alkyl group or is joined to R.sub.6 to form part of a C.sub.5-7 carbocyclic ring. These compounds have been found to possess antibacterial properties. The preparation of these compounds is described.
描述的化合物公式为(II): ##STR1## 其中R1是一个基团,使得CO2R1是一个酯基团;A1是一个氢原子;A2是一个CR2R3R4基团,其中R2是一个氢原子或一个羟基;R3是一个氢原子或一个低级烷基团;R4是一个氢原子或一个低级烷基团、苄基团、苯基团或与R3结合形成一个C5-7羧酸环,或者是一个CH(OH)R5或CHX基团,其中R5是一个氢原子或低级烷基团,X是一个氧原子或一个CR6R7基团,其中R6是一个氢原子或低级烷基、苯基、CN、CO2R8,其中R8是一个低级烷基、苯基或苄基团,R7是一个氢原子或低级烷基团或与R6结合形成一个C5-7碳环。这些化合物具有抗菌性质。这些化合物的制备方法已经描述。