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[Cyclic ureas. 2. Racemates and enantiomers of imidazolidin-2-ones: synthesis, configuration and sedative-hypnotic
Archiv Der Pharmazie
|June 1, 1993
Abstract:
The racemates and the enantiomers of the imidazolidin-2-ones 2a and 2b, which can be considered as cyclic ureas, are obtained from the racemates and the enantiomers of the hydantoins 1a and 1b by reduction with LiAlH4/AlCl3. The enantiomers that are dextrorotating in ethanol possess S-configuration. In a study with Wistar-rats, 2a and 2b show sedative-hypnotic activity. The enantiomers exhibit marked enantioselective differences in their potency.