An indolo[2-3-b]quinoxaline derivative represented by general formula (I) (wherein one of R¹ and R² represents hydrogen and the other represents -CH₂NHCCH₃(CH₂OH)₂, etc.; and R³ represents hydrogen, methyl, etc.) or a pharmaceutically acceptable salt thereof has an antitumor effect and therefore is useful as a drug.
通式(I)代表的
吲哚并[2-3-b]
喹喔啉衍
生物(其中 R¹ 和 R² 中的一个代表
氢,另一个代表-CH₂NHCCH₃(CH₂OH)₂等;R³ 代表
氢、
甲基等)或其药学上可接受的盐具有抗肿瘤作用,因此可用作药物。