Compounds of the formula ##STR1## wherein the symbols have the meaning defined in the specification, have retinoid-like, retinoid antagonist or retinoid inverse agonist-like biological activity.
式子 ##STR1## 中符号的含义如规范所定义,具有类
视黄醇、类
视黄醇拮抗剂或类
视黄醇反向激动剂样的
生物活性。