Compounds having the formula I wherein R1, X1, X2, X3 and X4 as defined herein are inhibitors of ERK kinase. Also disclosed are compositions and methods for treating hyperproliferative disorders.
具有式 I 的化合物,其中 R1、X1、X2、X3 和 X4 如本文所定义,是 ERK 激酶的
抑制剂。还公开了用于治疗过度增殖性疾病的组合物和方法。