摘要 |
The invention relates to new compounds of formula I or the pharmaceutically acceptable salts thereof, wherein R1 denotes 3-hydroxypropyl, 1,3-dihydroxyprop-2-yl or C3-C6-cycloalkylmethyl, and R2, R3, R4 and Ar have the meanings given in the specification, as well as the preparation and use thereof. The new compounds are valuable neurokinin (tachykinin) antagonists.
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