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    • 14. 发明授权
    • Substituted kynurenines and process for their preparation
    • 替代的犬尿苷及其制备方法
    • US5786508A
    • 1998-07-28
    • US411656
    • 1995-04-06
    • Robert SchwarczMario VarasiArturo Della TorreCarmela SpecialeAlberto Bianchetti
    • Robert SchwarczMario VarasiArturo Della TorreCarmela SpecialeAlberto Bianchetti
    • C07C229/36A61K31/195C07C239/36
    • C07C229/36C07C2101/14
    • The present invention relates to the use in the treatment of cognitive disorders associated 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) ##STR1## wherein R is halogen, C.sub.1 -C.sub.6 alkyl, C.sub.5 -C.sub.7 cycloalkyl, phenyl-C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.6 alkoxy, C.sub.6 -C.sub.10 aryloxy, phenyl-C.sub.1 -C.sub.4 alkoxy or trifluoromethyl, and R.sub.1 is hydroxy, C.sub.1 -C.sub.6 alkoxy, amino, mono-C.sub.1 -C.sub.6 alkylamino, di-C.sub.1 -C.sub.6 alkylamino, hydroxylamino, C.sub.1 -C.sub.4 alkoxyamino or benzyloxyamino, with the provisos that: (i) when R.sub.1 is hydroxy and, at the same time, R is halogen, then this halogen is not fluorine; and (ii) when R.sub.1 is hydroxy and, at the same time, R is C.sub.1 -C.sub.6 alkyl, then this C.sub.1 -C.sub.6 alkyl is not methyl, either as a single isomer or as a mixture of isomers, and the pharmaceutically acceptable salts thereof.
    • PCT No.PCT / US94 / 07804 Sec。 371日期:1995年4月6日 102(e)日期1995年4月6日PCT 1994年7月15日PCT公布。 公开号WO95 / 04714 日期1995年2月16日本发明涉及用作治疗与作为犬尿氨酸转氨酶(KAT)酶抑制剂的化合物的脑老化过程和围产期脑疾病相关的认知障碍的用途。 本发明还提供作为新化合物的选择类别的作为式(IA)化合物的KAT抑制剂,其中R是卤素,C 1 -C 6烷基,C 5 -C 7环烷基,苯基-C 1 -C 4烷基, C 1 -C 6烷氧基,C 6 -C 10芳氧基,苯基-C 1 -C 4烷氧基或三氟甲基,R 1是羟基,C 1 -C 6烷氧基,氨基,单-C 1 -C 6烷基氨基,二-C 1 -C 6烷基氨基,羟基氨基,C 1 -C 4 烷氧基氨基或苄氧基氨基,条件是:(ⅰ)当R 1为羟基,同时R为卤素时,该卤素不为氟; 和(ii)当R 1是羟基,并且同时R是C 1 -C 6烷基时,则该C 1 -C 6烷基不是甲基,作为单一异构体或作为异构体的混合物,以及其药学上可接受的盐 。