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 disorders such as endometriosis, uterine fibroids, and adenomyosis. [Solution] An estrogen receptor a-inhibiting ß partial agonist represented by structural formula (a), a pharmaceutically-acceptable salt thereof, or a hydrate of either of the aforementioned is used as an active ingredient.