| 摘要 |
The invention relates to compounds of general formula (I) wherein R1 signifi es hydrogen, lower alkyl or hydroxy-lower alkyl; R2 signifies furyl, thienyl, pyridyl or phenyl, which is optionally substituted by 1 to 3 substituents, selected from lower alkyl, lower alkoxy, halogen, cyano, CF3 or -N(R4)2; R3 signifies naphthyl or phenyl, which is optionally substituted by 1 to 3 substituents, selected from lower alkyl, lower alkoxy, halogen, acetyl, cyano, hydroxy-lower alkyl, -CH2-morpholin-4-yl, lower alkyl-oxy-lower alkyl, lower alkyl-N(R4)2 or CF3; R4 signifies, independently from each other, hydrogen o r lower alkyl, with the exception of (RS)-2-phenyl-1-(toluene-4-sulfonyl)-pyrrolidin e and (RS)-1-(toluene-4-sulfonyl)-2-p-tolyl-pyrrolidine as well as their pharmaceutically acceptable salts. The compounds described above are metabotropic glutamate receptor antagonists or agonists and therefore useful in the treatment of corresponding CNS disorders.
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