Substituted-4-amino-3-pyridinols, a process for their preparation and their use as medicaments
申请人:HOECHST-ROUSSEL
PHARMACEUTICALS INCORPORATED
公开号:EP0477903A2
公开(公告)日:1992-04-01
The present invention relates to compounds of the formula I
where
R1 is hydrogen or loweralkyl;
R2 is hydrogen, loweralkyl, cycloalkyl, arylloweralkyl,loweralkylcarbonyl or loweralkoxycarbonyl; or alternatively the group
本发明涉及式 I 的化合物
式中
R1 是氢或低级烷基
R2 是氢、低级烷基、环烷基、芳基低级烷基、低级烷基羰基或低级烷氧基羰基;或者是基团
Substituted-4-amino-3-pyridinols
申请人:Frommer Lawrence & Huag LLP
公开号:US05821239A1
公开(公告)日:1998-10-13
There are disclosed various substituted 4-amino-3-pyridinol compounds of the formula below, ##STR1## where R.sub.1, R.sub.2 and R.sub.3 are as defined in the specification, which are useful for alleviating various memory dysfunctions characterized by a cholinergic deficit such as Alzheimer's disease.