| abstract |
The present invention provides new therapeutic compounds for the treatment of diseases associated with abnormal signal transduction of growth factors such as macular degeneration and diabetic retinopathy. A compound of formula (I) or a pharmaceutically acceptable salt thereof. (Wherein, R 1 is hydrogen or optionally substituted C 1-6 alkyl, R 2 is optionally substituted heterocyclyl, and X is a bond, -O- or -C (= O)-, Y is CH or N, R 3 is optionally substituted heteroaryl, n is 0, 1, 2, 3 or 4) 【Selection chart】 None |