Fibroblast growth factor receptor kinase inhibitors of formula (I) and prodrugs thereof, and hyperproliferative disorders such as retinopathy, psoriasis, rheumatoid arthritis, osteoarthritis, septic arthritis, tumor metastases, periodontal disease Disease, corneal disease, proteinuria, coronary thrombosis from arteriosclerotic plaque, aneurysm aorta, vegetative epidermolysis bullosa, degenerated cartilage loss associated with traumatic joint injury, bone loss mediated by MMP activity, temporal Its use in the treatment of temporomandibular disorders and demyelinating disorders of the nervous system. [Selection diagram]式(I)の、線維芽細胞増殖因子受容体キナーゼ阻害剤及びそのプロドラッグ、並びに過剰増殖疾患、例えば、網膜症、乾癬、関節リウマチ、変形性関節症、敗血症性関節炎、腫瘍転移、歯周病、角膜疾患、タンパク尿、動脈硬化性プラークからの冠状動脈血栓、動脈瘤大動脈、栄養障害性表皮水疱症、外傷性関節損傷に伴う変性軟骨損失、MMP活性によって媒介された骨減少、側頭顎関節疾患、及び神経系の脱髄疾患の治療にそれを使用すること。【選択図】 図22