Compounds of Formula I: and stereoisomers and pharmaceutically acceptable salts and solvates thereof in which R
1
, R
2
, R
3
, R
4
, R
5
, R
6
, X
1
and X
2
have the meanings given in the specification, are inhibitors of one or more JAK kinases and are useful in the treatment of 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,其中R1、R2、R3、R4、R5、R6、X1和X2的含义如规范中所述,是一种或多种JAK激酶的
抑制剂,可用于治疗自身免疫性疾病、炎症性疾病、移植器官、组织和细胞的排斥,以及血液学疾病和恶性肿瘤及其共病。