| abstract |
The invention relates to processes for the preparation of 2,1-benzothiazepine-2,2-dioxides-5-carboxylic acid derivatives useful as therapeutic agents for the treatment of rheumatoid arthritis conditions. According to the invention, the compounds of the formula (I) in which the substituents have the meaning given in the description are prepared by, for example, a ketone of the formula (III), wherein the substituents have the meaning given in the description, with a compound of the formula (IV), wherein the substituents have the meaning given in the description, condensed. Formulas (I), (III) and (IV) |