This invention comprises the novel compounds of formula (I)
wherein R
1
, R
2
, R
3
, R
4
, R
5
, R
6
, X
1
and X
2
have defined meanings, having cell cycle kinase inhibiting enzymatic activity, their preparation, compositions containing them and their use as a medicine.
本发明涉及一种新型化合物,其
化学式为(I),其中R1、R2、R3、R4、R5、R6、X1和X2具有定义的含义,具有细胞周期激酶抑制酶活性,其制备方法,含有它们的组合物以及它们作为药物的用途。