The present invention provides processes for preparing a prostacyclin analogue of Formula (I) or a pharmaceutically acceptable salt thereof, wherein R
10
is a linear or branched C
1-6
alkyl. The processes of the present invention comprise steps that generate improved yields and fewer byproducts than traditional methods. The processes of the present invention employ reagents (e.g., the oxidizing reagent) that are less toxic that those used in the traditional methods (e.g., oxalyl chloride). Many of the processes of the present invention generate intermediates with improved e.e. and chemical purity; thereby eliminating the need of additional chromatography steps. And, the processes of the present invention are scalable to generate commercial quantities of the final compound.
本发明提供了制备公式(I)的
前列环素类似物或其药学上可接受的盐的方法,其中R10是线性或支链的C1-6烷基。本发明的方法包括产生比传统方法更高的产率和更少的副产物的步骤。本发明的方法采用的试剂(例如氧化试剂)比传统方法(例如
草酰氯)使用的试剂更少毒性。本发明的许多方法产生具有改进e.e.和
化学纯度的中间体,从而消除了需要额外的色谱步骤的需要。此外,本发明的方法可扩展以产生商业数量的最终化合物。