An object of the present invention is to provide a novel method for producing a steroid compound. The present invention provides a method for producing 3,7-dioxo-5β-cholanic acid or ester derivatives thereof, which uses, as raw materials, sterols having double bonds at positions 5 and 24, such as cholesta-5,7,24-trien-3β-ol, ergosta-5,7,24(28)-trien-3β-ol, desmosterol, fucosterol, or ergosta-5, 24(28)-dien-3β-ol, and which comprises the following 4 steps: (I) a step of performing oxidation of a hydroxyl group at position 3 and isomerization of a double bond at position 5 to position 4; (II) a step of converting position 24 to a carboxyl group or an ester derivative thereof by the oxidative cleavage of a side chain; (III) a step of introducing an oxygen functional group into position 7; and (IV) a step of constructing a 5β-configuration by reduction of a double bond at position 4.
本发明的目的是提供一种生产
甾体化合物的新方法。本发明提供了一种生产 3,7-二氧代-
5β-胆烷酸或其
酯类衍
生物的方法,该方法使用在 5 位和 24 位具有双键的
甾醇作为原料,例如胆甾-5,7,24-
三烯-3β-醇、麦角甾-5,7,24(28)-
三烯-3β-醇、去甲
胆甾醇、褐藻
甾醇或麦角甾-5,24(28)-二烯-3β-醇,该方法包括以下 4 个步骤:(I) 氧化位置 3 的羟基,并将位置 5 的双键异构化为位置 4;(II) 通过氧化裂解侧链,将位置 24 转化为羧基或其酯衍
生物;(III) 将氧官能团引入位置 7;以及 (IV) 通过还原位置 4 的双键,构建 5β 构型。