申请人:HOFFMANN LA ROCHE
公开号:WO2010020548A1
公开(公告)日:2010-02-25
The present invention relates to a compound of the general formula (I) wherein R1/R2 are independently from each other lower alkyl, or form together with the N-atom to which they are attached a heterocyclic group, selected from pyrrolidine, piperidine, piperazine, 4-methyl-piperazine, 4-cyclopropyl-piperazine, thiomorpholine, morpholine, 1-(3-oxa-8-aza- bicyclo[3.2.1]oct-8-yl or 1-(2-oxa-6-aza-spiro[3.3]hept-6-yl; X is a bond, -CH2- or -O-; Ar1 is aryl or heteroaryl, which are unsubstituted or substituted by one or two substituents selected from halogen, lower alkyl, lower alkoxy, or lower alkyl substituted by halogen; Ar2 is aryl or heteroaryl, which are unsubstituted or substituted by one, two or three substituents selected from halogen, lower alkyl, lower alkoxy, hydroxy, lower alkyl substituted by halogen, lower alkoxy substituted by halogen, S-lower alkyl, benzyl or phenyl; or to a pharmaceutically acceptable acid addition salt, to a racemic mixture, or to their corresponding enantiomers and/or optical isomers thereof. It has surprisingly been found that the compounds of general formula (I) are good inhibitors of the glycine transporter 1 (GIyT-1), and that they have a good selectivity to glycine transporter 2 (GlyT-2) inhibitors.