The present invention provides a non-fermentation process for placing unsaturation at the 9,11 position in a steroidal compound. Also, the present invention provides a process whereby the modified steroidal compound can be separated from the reaction mixture without the use of chromatography. More specifically, the present invention provides a process whereby a steroid compound such as 17-.alpha.-hydroxy-progesterone is reacted to form the meta iodoaryl benzoate. The iodoarylbenzoate is then irradiated with visible light in the presence of an alkyl-m-iodobenzoate dichloride to form the 9.alpha.-chloro steroid derivative. The chlorinated steroid derivative can then be hydrolized to provide a 9.alpha.-chloro steroidal alcohol and m-iodobenzoic acid. The m-iodobenzoic acid is extracted by the use of an aqueous base. The chlorinated steroidal alcohol can then be recovered and converted by conventional dehalogenation techniques to steroidal unsaturated compound having a double bond in the 9,11 position of the steroid nucleus. Alternatively, the chlorinated steroid derivative can be dehalogenation and then hydrolized.
本发明提供了一种非发酵过程,用于在类
固醇化合物中的9,11位置处放置不饱和度。此外,本发明提供了一种过程,可在不使用色谱法的情况下从反应混合物中分离改性类
固醇化合物。更具体地说,本发明提供了一种过程,其中类
固醇化合物(例如17-α-
羟孕酮)被反应形成间
碘芳基苯酸酯。然后,在烷基-m-
碘苯甲酸酯二
氯化物的存在下,用可见光照射
碘芳基苯酸酯,形成9α-
氯类
固醇衍
生物。然后可以
水解
氯化类
固醇衍
生物,以提供9α-
氯类
固醇醇和m-
碘苯甲酸。通过使用
水性碱提取m-
碘苯甲酸。然后可以回收
氯化类
固醇醇,并通过常规的去卤化技术将其转化为具有类
固醇核中9,11位置上双键的类
固醇不饱和化合物。或者,可以去卤化
氯化类
固醇衍
生物,然后进行
水解。