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 PGD
2
antagonists.
1
公式(I)的
苯并噻吩羧酸衍
生物可用作制药的起始物质,公式(VI)的5-羟基苯并[b]
噻吩-3-
羧酸衍
生物是特异的
PGD2拮抗剂的制备方法。