This invention provides estrogen receptor modulators of formula I, having the structure
where R
1
, R
2
, R
3
, and R
4
are as defined in the specification, or a pharmaceutically acceptable salt thereof.
该发明提供了公式I的
雌激素受体调节剂,其结构为其中R1,R2,R3和R4如规范中所定义,或其药学上可接受的盐。