(R)-alpha-ethyl-2-oxo-1-pyrrolidineacetamide compositions

Details (R)-alpha-ethyl-2-oxo-1-pyrrolidineacetamide compositions (R)-alpha-ethyl-2-oxo-1-pyrrolidineacetamide compositions

1987-03-12

1989-06-06

Springer, David B.

Drug, bio-affecting and body treating compositions

Designated organic active ingredient containing

Having -c-, wherein x is chalcogen, bonded directly to...

548543, C07D207277, A61K 3140

Patent

active

048372242

ABSTRACT:
(R)-alpha-ethyl-2-oxo-1-pyrrolidineacetamide, its preparation and pharmaceutical compositions containing the same. It can be prepared either by reacting (R)-alpha-ethyl-2-oxo-1-pyrrolidineactic acid successively with an alkyl haloformate and with ammonia, or, by cyclizing an (R)-2-amino-butanamide of the formula X--CH.sub.2 CH.sub.2 --Y--NHCH (C.sub.2 H.sub.5)CONH.sub.2 wherein Y is a --CH.sub.2 --radical when X represents a ZOOC--radical and Y is a --CO--radical when X represents a HalCH.sub.2 --radical, Z being a C.sub.1 -C.sub.4 alkyl radical and Hal a halogen atom.
This dextrorotatory enantiomer has been found to have significantly higher mnemic activity and lower toxicity than the corresponding racemate.

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