PRODRUGS TO NMDA RECEPTOR LIGANDS

摘要

The invention relates to compounds of the general formula (I) wherein R is a) - C(O)(CH2)nC(O)OH, b) wherein R1 is -N(R2)(R3) and R2/R3 are independently from each other hydrogen or lower alkyl, or is a cyclic tertiary amine, optionally substituted by lower alkyl, c) -P(O)(OH)2, or is d) - C(O)(CH)2)nNHC(O)(CH2)nN(R2)(R3); and n is 1, 2, 3 or 4; and to pharmaceutically acceptable acid addition salts thereof. These compounds may be used as prodrugs for the parentcompound of formula (II) which are useful in the treatment of NMDA receptor-related diseases.