The present invention provides processes for preparing a prostacyclin analogue of Formula I
or a pharmaceutically acceptable salt thereof, wherein R10 is a linear or branched C1-6 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.
本发明提供了制备式 I 的
前列环素类似物的工艺
或其药学上可接受的盐的工艺,其中 R10 是直链或支链 C1-6 烷基。与传统方法相比,本发明的工艺包括可提高产量和减少副产物的步骤。本发明的工艺采用的试剂(如氧化试剂)比传统方法中使用的试剂(如
草酰氯)毒性小。本发明的许多工艺生成的中间体具有更高的电子纯度和
化学纯度,因此无需额外的色谱步骤。而且,本发明的工艺可以扩展,生成商业数量的最终化合物。