| abstract |
【Task】 Provided is a novel and excellent method for treating and / or preventing prostate cancer and the like based on the selective inhibitory action of 17βHSDtype5. [Solution] Treatment of diseases involving 17βHSDtype5 such as prostate cancer, wherein {1-[(indol-2-yl) carbonyl] piperidyl} alkanol derivatives have potent 17βHSDtype5 selective inhibitory activity and are not accompanied by side effects due to testosterone reduction The present invention was completed based on the knowledge that it can be used as an agent and / or preventive agent. [Selection figure] None |