Process for producing...

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C - Chemistry, Metallurgy

07

D

C07D 333/68 (2006.01)

Patent

CA 2326419

Benzothiophenic acid derivatives (see formula I) which are useful as starting materials for producing drugs; and a process for producing 5-hydroxybenzo[b]- thiophene-3-carboxylic acid derivatives (see formula VI), which are specific PGD2 antagonists, by using the above derivatives (see formula I).

L'invention concerne des dérivés d'acide benzothiophénique (formule I) utiles en tant que matières premières pour produire des médicaments. L'invention concerne également un procédé de production de dérivés d'acide 5-hydroxybenzo[b]thiophène-3-carboxylique (formule VI), antagonistes de PGD¿2? spécifiques, dans lequel on utilise ces dérivés (formule I).

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