| abstract |
The present invention is concerned with 2-oxo-2,3-dihydro-indoles of general formula (I) wherein N1, N2, R1, R2/R2', R3 and R4 are as defined herein, as well as with a pharmaceutically acceptable salts thereof, with a racemic mixture, or with its corresponding enantiomer and/or optical isomer and/or stereoisomer thereof; and their use for the treatment of a central nervous system disorder. |