| 摘要 |
The present invention relates to the use in the treatment of cognitive disorders associted with the aging processes of the brain and perinatal brain disorders of compounds which act as inhibitors of the enzyme kynurenine aminotransferase (KAT). The present invention also provides, as novel compounds, a selected class of KAT inhibitors which are the compounds of formula (IA), wherein R is halogen, C1-C6 alkyl, C5-C7 cycloalkyl, phenyl-C1-C4 alkyl, C1-C6 alkoxy, C6-C10 aryloxy, phenyl-C1-C4 alkoxy or trifluoromethyl, and R1 is hydroxy, C1-C6 alkoxy, amino, mono-C1-C6 alkylamino di-C1-C6 alkylamino, hydroxylamino, C1-C4 alkoxyamino or benzyloxyamino, with the provisos that: (i) when R1 is hydroxy and at the same time, R is halogen, then this halogen is not fluorine; and (ii) when R1 is hydroxy and, at the same time, R is C1-C6 alkyl, then this C1-C6 alkyl is not methyl, either as a single isomer or as a mixture of isomers, and the pharmaceutically acceptable salts thereof. |
