Compounds according to formula (I), compositions and methods are provided for modulating the activity of RAF kinases, including BRAF kinase and for the treatment, prevention, or amelioration of one or more symptoms of disease or disorder mediated by RAF kinases. Formula (I): or a pharmaceutically acceptable salt, solvate, clathrate of hydrate thereof, wherein X is O or S(O)
t
; R
a
is O or S.
提供了按照公式(I)的化合物、组合物和方法,用于调节
RAF激酶的活性,包括B
RAF激酶,并用于治疗、预防或缓解由
RAF激酶介导的一种或多种疾病或障碍的症状。公式(I):或其药学上可接受的盐、溶剂化合物、包合物或
水合物,其中X为O或S(O)t;R为O或S。