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),其互变异构体、盐、溶剂化物、C.sub.1-6烷基酯和药物组合物。其中,Ph.sup.1和Ph.sup.2是苯环,但须满足羧基和羟基相对位于邻位。Het包括一个可选取代的杂环,其中包含共轭双键,并与NR中的氮原子结合。该化合物的特点在于,A是一个桥梁,因为它不是偶氮而稳定,R是氢或较低的烷基。本发明还包括该化合物的制备以及作为药物的用途,尤其用于治疗自身免疫性疾病。