Estratrien-triazoles corresponding to formula (I) (shown below) which are useful in therapy, especially for the treatment and/or prevention or inhibition of a steroid hormone dependent disorder, preferably a steroid hormone dependent disease or disorder requiring the inhibition of a 17β-hydroxysteroid dehydrogenase (17β-HSD) such as 17β-HSD type 1, type 2 or type 3 enzyme.