Benzothiophenecarboxylic acid derivatives of the formula (I) which are useful as starting materials for producing drugs, and a process for preparing 5-hydroxybenzo[b]-thiophene-3-carboxylic acid derivatives of the formula (VI) which are specific PGD2 antagonists.
公式(I)的
苯并噻吩羧酸衍
生物可用作生产药物的起始材料,并且可以制备公式(VI)的5-羟基苯并[b]-
噻吩-3-
羧酸衍
生物的方法,这些衍
生物是特异的
PGD2拮抗剂。