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Details for Patent: 5,563,175

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Summary for Patent: 5,563,175

Title: GABA and L-glutamic acid analogs for antiseizure treatment
Abstract:A compound of the formula ##STR1## wherein R.sub.1 is a straight or branched alkyl group having from 1 to 6 carbon atoms, phenyl, or cycloalkyl having from 3 to 6 carbon atoms; R.sub.2 is hydrogen or methyl; and R.sub.3 is hydrogen, methyl or carboxyl; which is useful in the treatment of seizure disorders. Processes are disclosed for the preparation of the compound. Intermediates prepared during the synthesis of the compound are also disclosed.
Inventor(s): Silverman; Richard B. (Morton Grove, IL), Andruszkiewicz; Ryszard (Sopot, PL), Yuen; Po-Wai (Ann Arbor, MI), Sobieray; Denis M. (Holland, MI), Franklin; Lloyd C. (Hamilton, MI), Schwindt; Mark A. (Holland, MI)
Assignee: Northwestern University (Evanston, IL) Warner-Lambert Company (Ann Arbor, MI)
Application Number:08/420,575
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International Patent Family for Patent: 5,563,175

Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Austria207052► subscribe
Australia4379493► subscribe
Australia677008► 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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