| abstract |
The present invention relates to compounds of formula (I) wherein X represents O, S or two hydrogen atoms which do not form a bridge; A1 / A2 denotes, independently of one another, a phenyl or 6-membered heterocycle containing 1 or 2 nitrogen atoms; B is a group of formula (A), wherein Y is -O-, -S- or a bond, Z is -O- or -S-; or B is a 5-membered heterocyclic group of formulas (a, b, c or d). These compounds can be used as ligands of metabotropic grutamate receptors in the control or prevention of acute and / or chronic neurological disorders. |