Compounds of Formula I: and stereoisomers and pharmaceutically acceptable salts and solvates thereof in which R1, R2, R3 and R4 have the meanings given in the specification, are inhibitors of one or more JAK kinases and are useful in the treatment of JAK kinase-associated diseases and disorders, such as autoimmune diseases, inflammatory diseases, rejection of transplanted organs, tissues and cells, as well as hematologic disorders and malignancies and their co-morbidities.
公式I的化合物及其立体异构体和药学上可接受的盐和溶剂化合物,在其中R1、R2、R3和R4具有规范中给定的含义,是一种或多种JAK激酶的
抑制剂,并且在治疗JAK激酶相关疾病和疾病方面非常有用,如自身免疫疾病、炎症性疾病、移植器官、组织和细胞的排斥反应,以及血液学疾病和恶性肿瘤及其并发症。