A compound of the formula Het--NR--SO.sub.2 --Ph.sup.2 --A--Ph.sup.1 (COOH)(OH) and tautomic form, salts, solvates, C.sub.1-6 alkyl esters and pharmaceutical compositions of the compound. Ph.sup.1 and Ph.sup.2 are benzene rings with the proviso that carboxy and hydroxy are ortho to one another. Het includes an optionally substituted heterocyclic ring which includes conjugated double bonds and binds to nitrogen in NR. The compound is characterized in that A is a bridge which is stable against reduction because it is not azo, and in that R is hydrogen or lower alkyl. The invention also includes the preparation of the compound and its use as a drug, particularly for treating autoimmune diseases.
该化合物的
化学式为 Het--NR--SO.sub.2 --Ph.sup.2 --A--Ph.sup.1 (COOH)(OH),并包括其互变异构体、盐、溶剂合物、C.sub.1-6烷基酯和该化合物的药物组成物。其中,Ph.sup.1 和 Ph.sup.2 是苯环,但需满足羧基和羟基相对位于苯环的邻位。Het 包括一个可选取代的杂环,其中包括共轭双键并与 NR 中的氮原子结合。该化合物的特点是 A 是一种桥接基团,由于不是偶氮化合物,因此对还原稳定,而 R 为氢或低碳基。本发明还包括该化合物的制备方法以及其作为药物的用途,特别是用于治疗自身免疫性疾病。