Estrogen Receptor Partial Agonist Having Estrogen Receptor Inhibitory Activity and Therapeutic Agent for Gynecological Disease Using the same

摘要

To provide a therapeutic agent for estrogen-dependent gynecological diseases such as endometriosis, uterine fibroids, uterine myomyosis and the like.An estrogen receptor inhibiting partial agonist represented by the following structural formula (a), a pharmaceutically acceptable salt thereof, or a hydrate thereof is used as an active ingredient.Structural formula (a) BACKGROUND OF THE INVENTION