The present invention provides a compound of formula (1) or a salt thereof wherein ring Q1 is optionally-substituted C6-10 aryl, etc.; R1 and R2 are independently hydrogen atom, etc.; W1 is C1-4 alkylene which may be optionally substituted with 1 to 3 fluorine atoms or C3-7 cycloalkyl; W2 is —NR4aC(O)—, etc. wherein R4a is hydrogen atom or C1-6 alkyl; ring Q2 is optionally-substituted C6-10 aryl, etc., which has an inhibitory effect on the sphere-forming ability of cancer cells and is useful an agent for removing iPS cells.
本发明提供了式(1)化合物或其盐,其中环Q1为任选取代的C6-10芳基等;R1和R2独立地为氢原子等;W1为C1-4亚烷基,可任选被1至3个
氟原子或C3-7环烷基取代;W2为-NR4aC(O)-等,其中R4a为氢原子或C1-6烷基;环Q2为任选取代的C6-10芳基等、其中 R4a 是氢原子或 C1-6 烷基;环 Q2 是任选取代的 C6-10 芳基等。