The invention relates to compounds of formula (I) and pharmaceutically acceptable salts thereof wherein R1 to R6 are as defined in the claims. The invention further relates to their use as inhibitors of 17β-HSD and in treatment or prevention of steroid hormone de- pendent diseases or disorders, such as steroid hormone dependent diseases or disorders requiring the inhibition of the 17β-HSD1 enzyme and/or requiring the lowering of the endogenous estradiol concentration. The present invention also relates to the preparation of the aforementioned compounds and to pharmaceutical compositions comprising as an active ingredient(s) one or more of the aforementioned compounds or pharmaceutically acceptable salts thereof.
本发明涉及式(I)化合物及其药用可接受的盐,其中R1至R6如权利要求中定义。本发明进一步涉及它们作为17β-H
SD抑制剂的应用,以及在治疗或预防甾体激素依赖性疾病或失调症,例如需要抑制17β-H
SD1酶和/或需要降低内源性
雌二醇浓度的甾体激素依赖性疾病或失调症中的应用。本发明还涉及前述化合物的制备,以及包含一个或多个前述化合物或其药用可接受盐作为活性成分的药物组合物。