| abstract |
This invention relates to a series of difluoromethylene aromatic ethers of the formulan nwherein ring A and X and Y are defined as in the specification, that exhibit activity as glycinentransport inhibitors, their pharmaceutically acceptable salts, pharmaceutical compositionsncontaining them, and their use for the enhancement of cognition and the treatment of thenpositive and negative symptoms of schizophrenia and other central nervous system disordersnin mammals, including humans. |