Piperazine derivatives, medicaments containing the same, their use and process for preparing the same

摘要

The present invention relates to piperazine derivatives of the general formula in which Ra, Y1 to Y3 and E are defined herein, tautomers thereof, stereoisomers thereof, including their mixtures, and salts thereof, and in particular physiologically tolerated salts thereof with inorganic or organic acids or bases. These compounds have valuable pharmacological properties, such as aggregation-inhibiting activity. This invention also relates to medicaments comprising these compounds and to processes for the preparation of these compounds.