| abstract |
Compounds of formula (I) wherein: R1 is 1-3 substitutents selected independently from hydrogen, halogen, -CF3, alkyl and alkoxy; R2 is selected from hydrogen, alkyl and alkoxy; R3 is a 5-membered, nitrogen containing, heterocyclyl group optionally substituted with hydrogen, alkyl or -CF3; Ar1 is an optionally substituted phenyl or pyridinyl ring, and R7 and R8 are hydrogen or together with the nitrogen to which they are attached form a piperidine, morpholine, piperazine, 4-methylpiperazine or a pyrrolidine ring. |