| abstract |
The present invention relates to compounds comprising an oxazole or thiazole moiety of formula (I), processes for preparing them, pharmaceutical compositions comprising said compounds and their uses as H 3 -receptor ligands, Formula (I), wherein, A 1 is CH, C(alkyl), C-halogen or N; R 1 is hydrogen, halogen, C 1-6 alkyl or alkoxy; R 2 is, Formula (II′), A 3 is O or S; R 3 is hydrogen, halogen, C 1-6 alkyl or alkoxy; R 4 is hydrogen, halogen, C 1-6 alkyl, alkoxy or —O-L; R 5 is hydrogen or —O-L, wherein L is an aminoalkyl group and at least one of R 4 and R 5 should be —O-L. |