| 摘要 |
The present invention relates to new compounds of formula I, having an anti-tumor activity, wherein R<1>, R<2>, R<3>, R<4>, R<5> and n are as defined in the description and the claims and pharmaceutical acceptable salts thereof. The present invention concerns also pharmaceutical composition comprising compounds of formula (I), the use of compounds of formula (I) for the preparation of medicaments and process for the preparation of compounds (I).
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