ESTROGEN RECEPTOR Beta PARTIAL AGONIST HAVING ESTROGEN RECEPTOR Alpha INHIBITORY EFFECT, AND GYNECOLOGICAL DISEASE THERAPEUTIC AGENT USING SAME

摘要

[Problem] To provide a therapeutic agent for estrogen-dependent gynecological diseases such as endometriosis, uterine fibroids, and uterus adenomyosis. [Solution] To use an estrogen receptor α-inhibiting β partial agonist represented by the formula (a), a pharmaceutically-acceptable salt thereof, or a hydrate of either of the afore-mentioned, as an active ingredient.