Disclosed is a compound of formula (I) where the substituents are as disclosed in the specification. Examples of compounds of formula (I) are 4-{ 5-Chloro-4-(4-cyano-6-trifluoromethyl-pyridin-3-yl)-2-[(2-methoxy-6-methyl-phenyl)-methyl-carbamoyl]-phenoxyl-butyric acid, 3-{ 5-Chloro-4-(4-cyano-6-trifluoromethyl-pyridin-3-yl)-2-[(2-methoxy-6-methyl-phenyl)-methyl-carbamoyl]-phenoxy} -propionic acid, 4-{ 5-Chloro-4-(4-cyano-6-trifluoromethyl-pyridin-3-yl)-2-[(2-methoxy-phenyl)-m ethyl-carbamoyl]-phenoxy} -butyric acid. Also disclosed is a pharmaceutical composition comprising a compound of formula (I) and the use of a compound of formula (I) in the manufacture of a medicament for treating endometriosis, uterine fibroids, polycystic ovarian disease, dysmenorrhea, dyspareunia, menorrhagia, nonmenstrual pelvic pain, pelvic tenderness, induration, general disorders of the menstrual cycle, premature ovarian failure due to chemotherapy or early menopause, hirsutism, precocious puberty, gonadal steroid-dependent neoplasia such as cancers of the prostate, breast and ovary, gonadotrophic pituitary adenomas, adenomyosis, sleep apnea, irritable bowel syndrome, premenstrual syndrome, benign prostatic hypertrophy, lower urinary tract symptoms, contraception or infertility.