The invention relates to compounds of the formula 1
or a pharmaceutically acceptable salt, prodrug, solvate or hydrate thereof, wherein L, R
1
, R
2
R
3
and R
4
are as defined herein. The invention also relates to pharmaceutical compositions containing the compounds of formula 1 and to methods of treating abnormal cell growth, such as cancer in a mammal by administering the compounds of formula 1.
本发明涉及公式1的化合物或其药学上可接受的盐、前药、溶剂或
水合物,其中L、R1、R2、R3和R4如定义所述。本发明还涉及含有公式1化合物的制药组合物,以及通过给哺乳动物施用公式1化合物治疗异常细胞生长(如癌症)的方法。