Novel thienopyridine-carboxylic acid derivatives, which are shown by the general formula ##SPC1## Wherein R.sup.1 represents hydrogen or a lower alkyl; R.sup.2 represents hydrogen, a lower alkyl or a halogen; or R.sup.1 and R.sup.2, taken together, may represent an alkylene to form a 5- or 6-membered ring with or without alkyl substituents; each of R.sup.4 and R.sup.5 represents hydrogen or a lower alkyl; and their pharmaceutically acceptable salts obtainable when R.sup.4 is hydrogen, which are useful medicines such as chemotherapeutic agents of bacterial infections.
新型
噻唑吡啶羧酸衍
生物,其通式如下:##
SPC1## 其中,R.sup.1代表氢或较低的烷基;R.sup.2代表氢、较低的烷基或卤素;或者R.sup.1和R.sup.2在一起,可以代表一个烷基,形成一个含有或不含有烷基取代基的五元或六元环;R.sup.4和R.sup.5中的每一个代表氢或较低的烷基;当R.sup.4为氢时,其药学上可接受的盐可用作细菌感染的
化学治疗药物。