The invention relates to AKR1C3 inhibitors and to processes for their preparation, to their use for the treatment and/or prophylaxis of diseases and also to their use for preparing medicaments for the treatment and/or prophylaxis of diseases, in particular bleeding disorders and endometriosis.本發明係關於AKR1C3抑制劑及其製備方法,其用於治療及/或預防疾病之用途,以及其用於製備用於治療及/或預防疾病,尤指出血性病症及子宮內膜異位症之藥劑的用途。