The present invention provides a compound of the formula (I) ##STR1## wherein: R.sup.1 is 1-hydroxyethyl, 1-fluoroethyl or hydroxymethyl; R.sup.2 is hydrogen or C.sub.1-4 alkyl; Z is carboxy, sufonic acid, tetrazol-5-yl or C .sub.1-4 alkylsulfonylcarbamoyl (--CONHSO.sub.2 C.sub.1-4 alkyl); A is a phenyl or thienyl ring; and A is optionally further substituted by one or two substituents or a pharmaceutically acceptable salt or in vivo hydrolysable ester thereof. Processes for their preparation, intermediates in their preparation, their use as therapeutic agents and pharmaceutical compositions containing them.
本发明提供了化合物的结构式(I) ##STR1## 其中:R.sup.1为1-羟乙基、1-
氟乙基或羟甲基;R.sup.2为氢或C.sub.1-4烷基;Z为羧基、
磺酸基、五唑基或C.sub.1-4烷基磺酰
氨基(--CONHSO.sub.2 C.sub.1-4烷基);A为苯环或
噻吩环;A还可以进一步被一个或两个取代基或其药用可接受的盐或体内可
水解的酯所取代。其制备方法、制备过程中的中间体、作为治疗剂的用途以及含有它们的药物组成物也一并提供。