ステロイド系ホルモンの誘導体の研究 (第4報)

C-17位に水酸基を有するステロイドの呈色反応に就いて (補遺)

抄録

Cortisone and 17α-hydroxyprogesterone possess a tertiary hydroxyl in 17α-position and would seem liable to undergo coloration by warming with an acid but the color actually does not appear. The reason for it is the presence of a carbonyl at C₂₀ and its reduction makes it easier to color with an acid.