| abstract |
(57) [Summary] (Correction) [Constitution] The following formula (I) [Wherein R 1 , R 2 and R 3 are hydrogen or lower alkyl, R 4 is hydrogen, lower alkyl or cycloalkyl R 5 is hydrogen, cycloalkyl, cycloalkenyl, etc., R 6 is hydrogen, lower alkyl, lower alkoxy or halogen, X is O or S (O) g, g is an integer of 0 to 2, and n is an integer of 1 to 6] or a pharmacological agent thereof. Acceptable salt. [Effect] The above compound or a pharmacologically acceptable salt thereof has a steroid 5α-reductase inhibitory action, and is useful as a therapeutic drug for benign prostatic hyperplasia, prostate cancer, baldness or pallor. |