CARBAMATE DERIVATIVES OF 4-AMINO-3-ISOXALIDINONES 3-AMINO-1-HYDROXYPYRROLIDIN-2-ONES AND ANALOGS OF 1-AMINO-1-CYCLOPROPANE CARBOXYLIC ACID, PROCESS OF THEIR PREPARATION, THEIR USE AS MEDICAMENTS,AS WELL AS A PHARMACEUTICAL PREPARATION IN WHICH THEY ARE COMPRISED

摘要

Compounds of formula (I) in which R.sub.1 represents a radical (A), (B) or (C) R.sub.2. F) in which R.sub.3, R.sub.4, R.sub.5, R.sub.6, X, R.sub.7 are Have different meanings of n and n are 1 or 2, which are useful as memory dysfunction mitigating drugs. which are characterized by a cholinergic deficiency such as Alzheimer's disease. A process for the preparation of these compounds is also described