| abstract |
PROBLEM TO BE SOLVED: To provide a compound that modulates the activity of protein kinase and is therefore useful in treating a disease caused by dysregulation of protein kinase activity. Tricyclic pyrrolo represented by formula (I) Derivative. (R 1 is H, halogen or amino; R 2 is NR a R b , N (OR b ) R a or OR a ; R a and R b are H, alkyl, cycloalkyl, etc .; R 3 is H, alkyl, R 4 is H, alkyl, heterocyclyl, etc .; A is CH 2 , ( 2 ) 2 , (CH 2 ) 3, CH═CH, etc.) [Selection figure] None |