This invention relates to 12,13-dihydro-6H-indolo[2,3-a]pyrrolo[3,4-c]carbazole-5,7(6H)-dione derivatives represented by the following general formula, pharmaceutically acceptable salts thereof, a method for preparation thereof and a use thereof: ##STR1## [wherein R.sup.1 denotes a monosaccharide group having 5 to 7 carbon atoms, and the hydroxyl groups of this monosaccharide group can be replaced by the same or different 1 to 3 groups selected from the group consisting of a hydrogen atom, lower alkyl group, lower alkylcarbonyloxy group and lower alkoxy group.]
本发明涉及以下一般式所表示的12,13-二氢-6H-
吲哚[2,3-a]
吡咯并[3,4-c]
咔唑-5,7(6H)-二酮衍
生物,其药学上可接受的盐,其制备方法和用途:##STR1## [其中R1表示具有5到7个碳原子的
单糖基,该
单糖基的羟基可以被相同或不同的1到3个选自氢原子,低碳基,低碳基羰基氧基和低碳氧基的基团所取代。]