The present invention provides a compound represented by the following general formula (I): or a pharmaceutically acceptable salt thereof, a pharmaceutical composition containing such a compound, and the like. The compound or a pharmaceutically acceptable salt thereof, the pharmaceutical composition containing such a compound, or the like is useful as a medicine or the like for therapy of benign prostatic hyperplasia, cancer, osteoporosis, psoriasis, secondary hyperparathyroidism, chronic glomerulonephritis, lupus nephritis and/or diabetic nephropathy and the like.