| abstract |
The present invention relates to the compound of formulae and to a process for the manufacture of compounds of the general formula which are ligands for the metabotropic glutamate receptors of group II, wherein T is tritium; R1 is hydroxy, lower alkoxy, lower alkenyloxy, benzyloxy, hydrogen, deuterium or tritium; R11 is hydrogen, deuterium or tritium, hydroxy or amino, and R2 is hydrogen or tritium, or R1 and R2 form a bond. |