申请人:Dr. Karl Thomae GmbH
公开号:US05618814A1
公开(公告)日:1997-04-08
The invention relates to trisubstituted pyrimido [5,4-d]-pyrimidines of general formula ##STR1## (wherein R.sub.a, R.sub.b and R.sub.c are defined as in claim 1) and the salts thereof, more particularly for pharmaceutical use the physiologically acceptable salts thereof, which have, inter alia, valuable pharmacological properties, particularly in chemotherapy a sensitizing effect on resistant tumors, the use thereof and processes for preparing them.
该发明涉及一种通式为##STR1##的三取代嘧啶并[5,4-d]-嘧啶化合物(其中R.sub.a、R.sub.b和R.sub.c如权利要求1所定义),以及其盐,更具体地说,是其生理上可接受的盐,该化合物具有有价值的药理特性,尤其是在化疗中对抗抗药肿瘤具有增敏作用,本发明还涉及该化合物的使用和制备方法。