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Generated: June 29, 2017

DrugPatentWatch Database Preview

Details for Patent: 4,837,223

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Summary for Patent: 4,837,223

Title: (S)-alpha-ethyl-2-oxo-1-pyrrolidineacetamide compositions
Abstract:(S)-alpha-ethyl-2-oxo-1-pyrrolidineacetamide, its preparation and pharmaceutical compositions containing the same. It can be prepared either by reacting (S)-alpha-ethyl-2-oxo-1-pyrrolidineacetic acid successively with an alkyl haloformate and with ammonia, or, by cyclizing an (S)-2-amino-butanamide of the formula X--CH.sub.2 CH.sub.2 -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 laevorotatory enantiomer has been found to have significantly higher protective activity against hypoxia and ischemia than the corresponding racemate.
Inventor(s): Gobert; Jean (Brussels, BE), Geerts; Jean-Pierre (Leglise, BE), Dodson; Guy (Bellefontaine, BE)
Assignee: UCB Societe Anonyme (Brussels, BE)
Application Number:07/025,277
Patent Claim Types:
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Composition; Compound; Process;

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Foreign Priority and PCT Information for Patent: 4,837,223

Foriegn Application Priority Data
Foreign Country Foreign Patent Number Foreign Patent Date
United Kingdom84/12357May 15, 1984

International Patent Family for Patent: 4,837,223

Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Austria45348► Subscribe
Austria45567► Subscribe
Australia4252985► Subscribe
Australia4253085► Subscribe
Australia574175► Subscribe
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The estimated expiration dates shown above are derived by simply adding 20 years to the priority date.
Due to the complexity of determining patent expirations even in a single country, compounded by the diversity of global patent laws, it is advisable to have patent counsel verify freedom to operate.

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Serving 500+ biopharmaceutical companies globally:

UBS
Federal Trade Commission
Baxter
Dow
Julphar
Boehringer Ingelheim
Colorcon
US Department of Justice
Fish and Richardson
Healthtrust

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