Provided is a compound or a salt thereof, which has an excellent JAK inhibitory action, and is useful as a prophylactic or therapeutic agent for autoimmune diseases (rheumatoid arthritis, psoriasis, inflammatory bowel disease, Sjogren's syndrome, Behcet's syndrome, multiple sclerosis, systemic lupus erythematosus, etc.), cancer (leukemia, uterine leiomyosarcoma, prostate cancer, multiple myeloma, cachexia, myelofibrosis, etc.) and the like. The present invention relates to a compound represented by the formula (I)
wherein each symbol is as defined in the present specification, or a salt thereof.
本发明提供了一种化合物或其盐,具有优异的JAK抑制作用,并可作为自身免疫性疾病(类风湿性关节炎、
银屑病、炎症性肠病、Sjogren综合症、Behcet综合症、多发性硬化症、系统性红斑狼疮等)、癌症(白血病、子宫平滑肌肉瘤、前列腺癌、多发性骨髓瘤、虚弱症、骨髓纤维化等)等预防或治疗剂。本发明涉及一种由式(I)所表示的化合物,其中每个符号如本说明书中所定义的,或其盐。