The present invention relates to pyridine-2-yl-carboxylic acid amides which act as metabotropic glutamate receptor antagonists. In particular, the present invention relates to pyridine-2-yl-carboxylic acid amides of formula I
wherein R
1
, R
2
, R
3
, and R
4
are as described in the specification.
                            本发明涉及作为代谢型谷
氨酸受体拮抗剂的
吡啶-2-基-
羧酸酰胺。具体来说,本发明涉及式I中的
吡啶-2-基-
羧酸酰胺,其中R1、R2、R3和R4如规范中描述的那样。