abstract |
The present invention relates to a compound of formula (I): [Chemical 1] [Wherein Ar 1 represents a group (II), (III), (IV) or (V), and A, Ar 2 , n, R 1 , R 2 , R 3 , R 4 and R 5 are , As defined herein. ] Or a pharmaceutically acceptable salt thereof; a process for its preparation; a pharmaceutical composition comprising them; its use in therapy. |