The present invention relates to a novel benzopyran or thiobenzopyran derivative represented by formula (1): pharmaceutically acceptable salt or stereoisomer thereof, in which X, R1, R2, R3, R4 and A are defined as described in the specification, and to a process for preparation thereof and a pharmaceutical composition having anti-estrogenic activity which contains the compound (1) as an active component.
本发明涉及一种由式(1)所表示的新型苯并
吡喃或
硫代苯并
吡喃衍
生物:其药学上可接受的盐或立体异构体,其中X、R1、R2、R3、R4和A的定义如说明书所述,以及制备该化合物的方法和含有化合物(1)作为活性成分的具有抗
雌激素活性的药物组合物。