| 摘要 |
Novel piperazinylpyrazines of the formula <IMAGE> in which the substituents are defined in Claim 1, and their N-oxides are prepared. These compounds are obtained by reacting an appropriate pyrazine or its N-oxide, which contains an easily removable group in the 2-position, which is defined in Claim 1, with an appropriate piperazine. The compounds III are also prepared as acid addition salts. The compounds obtained can be used in pharmaceutical compositions having anorexic action. |
