Compounds of the formula: ##STR1## wherein: A is oxo or dioxo; R.sup.1, R.sup.2 and R.sup.3 are independently hydrogen or lower alkyl of one to six carbon atoms; R.sup.4, R.sup.5, R.sup.6 and R.sup.7 are independently hydrogen, lower alkyl of one to six carbon atoms, alkoxy, acyl or halo; are advantageously converted to thieno[3,2-c]pyridine derivatives and the pharmaceutically acceptable salts thereof, particularly ticlopidine hydrochloride.
化合物的公式为:##STR1## 其中:A为氧代或二氧代;R.sup.1,R.sup.2和R.sup.3独立地为氢或一至六个碳原子的低碳基;R.sup.4,R.sup.5,R.sup.6和R.sup.7独立地为氢,一至六个碳原子的低碳基,烷氧基,酰基或卤素基;有利地转化为
噻吩[3,2-c]
吡啶衍生物及其药学上可接受的盐,尤其是替卡洛匹定盐酸盐。