Piperidones as tachykinin antagonists

摘要

The present invention relates to a compound of the formula:- <CHEM> or a pharmaceutically acceptable acid addition salt or solvate thereof, wherein R is C3-C7 cycloalkyl, (C3-C7 cycloalkyl)C1-C4 alkylene or benzyl; R<1> is phenyl optionally substituted by 1 or 2 substituents each independently selected from fluoro and chloro; X is O or NSO2R<2>; and R<2> is C1-C4 alkyl or halo(C1-C4)alkyl, together with processes for the preparation of, intermediates used in the preparation of, compositions containing and uses of, such compounds having tachykinin antagonist activity.