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.
下面公式中披露了各种取代的4-
氨基-3-
吡啶醇化合物,其中R.sub.1,R.sub.2和R.sub.3如规范中所定义,这些化合物对于缓解由
胆碱能缺陷特征的各种记忆功能障碍如阿尔茨海默病是有用的。