The present invention relates to methods and novel intermediates useful in the preparation of a compound of formula (A)
or a pharmaceutically acceptable salt thereof, comprising converting the aldehyde of a compound of formula (B) with a reducing agent to prepare a compound of formula (C)
and converting the compound of formula (C) with a sulfating reagent to prepare a compound of formula (A). An objective of the present invention is to provide methods of preparing bile acid derivatives and novel intermediates. A use of the methods and intermediates described relates to the synthesis of bile acid derivatives which activate both FXR and TGR5.
本发明涉及用于制备式(A)化合物的方法和新型中间体
或其药学上可接受的盐,包括用还原剂转化式(B)化合物的醛,制备式(C)化合物
并用
硫酸化试剂转化式(C)化合物,制备式(A)化合物。本发明的目的是提供制备
胆汁酸衍
生物和新型中间体的方法。所述方法和中间体的一个用途是合成同时激活 FXR 和 TGR5 的
胆汁酸衍
生物。