This compound refers to compounds of the formula I, where Y is N or C — R； G is a 5- or 6-membered aromatic or heteroaromatic ring containing 0, 1, 2 or 3 heteroatoms selected from the group comprising phenyl, pyridinyl with different N-positions, imidazolyl, pyrazinyl, pyrimidinyl, thiophenyl, thiazolyl, pyrazolyl or thiadiazolyl, which is optionally substituted with 1, 2 or 3 substituents selected from the group consisting of halogen, lower alkyl, lower alkoxy, lower alkoxy, substituted with halogen or NRR '； R and R 'independently of one another represent hydrogen or lower alkyl or can form together with the N atom to which they are attached a five or six membered saturated heterocyclic group, which may contain an additional oxygen, NH or N-lower alkyl group； R 5 is hydrogen, halogen, or lower alkyl substituted with halogen； R 5 is hydrogen, halogen, or lower alkyl substituted with halogen； R4 is hydrogen, lower alkyl, lower alkoxyalkyl, cycloalkyl or heterocycloalkyl； or R together with the nearest carbon atom in group G may form a group； this A represents -CH-, -CHCHH-or -C (CH) -, R represents phenyl or pyridinyl, where the N atom in the pyridinyl group may be in different positions； or a pharmaceutically acceptable acid or acid addition salt thereof, a racemic mixture, or a corresponding enantiomer and / or optical isomer and / or stereoisomer thereof. Unexpectedly, it was found that compounds of the general formula I are positive allosteric modulators (PAM) of the metabotropic glutamate receptor 4 (mGluR4), can be used to treat the diseaseДанное соединение относится к соединениям формулы Iгде Y представляет собой N или C-R； G представляет собой 5- или 6-членное ароматическое или гетероароматическое кольцо, содержащее 0, 1, 2 или 3 гетероатома, выбранное из группы, включающей фенил, пиридинил с различными N-позициями, имидазолил, пиразинил, пиримидинил, тиофенил, тиазолил, пиразолил или тиадиазолил, которое, возможно, замещено 1, 2 или 3 заместителями, выбран
