New compounds of the general formula I ##STR1## wherein R.sup.1 and R.sup.2 each independently represent an alkyl group containing 1 to 4 carbon atoms, or an alkoxy group containing 1 to 3 carbon atoms, or halogen, R.sup.3 represents hydrogen, halogen, an alkyl group containing 1 to 4 carbon atoms, an alkoxy group containing 1 to 3 carbon atoms, an amino group or a nitro group, A represents ##STR2## which is bonded to the benzene ring by its sulphur or nitrogen atom and in which R.sup.4 is hydrogen or an alkyl group containing 1 to 4 carbon atoms; together with salts thereof with physiologically acceptable acids and, when R.sup.4 is hydrogen, with physiologically acceptable bases are described. The compounds are of use in inhibiting thrombosis formation, in treating thrombosis and in fibronolytic therapy. Various methods of producing the new compounds are described involving the building up of the --A--CH.sub.2 --CH.sub.2 --S--CH.sub.2 CH.sub.2 NH.sub.2 side chain from aromatic precursors having an incomplete side chain or by introducing at least one of the R.sup.1, R.sup.2 or R.sup.3 substituents into a precursor lacking that substituent or from an amino-protected precursor.
新的化合物具有一般式I ##STR1## 其中R.sup.1和R.sup.2独立地表示含有1至4个碳原子的烷基或含有1至3个碳原子的烷氧基,或卤素,R.sup.3表示氢,卤素,含有1至4个碳原子的烷基,含有1至3个碳原子的烷氧基,
氨基或硝基,A表示##STR2## 它通过其
硫或氮原子与苯环相连,在其中R.sup.4为氢或含有1至4个碳原子的烷基;以及与生理上可接受的酸盐和当R.sup.4为氢时,与生理上可接受的碱盐。这些化合物可用于抑制血栓形成,治疗血栓和纤溶疗法。描述了制备新化合物的各种方法,包括从具有不完整侧链的芳香前体中建立--A--CH.sub.2--CH.sub.2--S--CH.sub.2CH.sub.2NH.sub.2侧链或通过将R.sup.1,R.sup.2或R.sup.3取代基之一引入到缺少该取代基的前体中或从
氨基保护前体中引入。