CA Patent

CA1322199C — N-¬(2-oxopyrrolidin-1-yl) acetyl)| piperazine derivatives and drug for senile dementia

Assigned to Shionogi and Co Ltd · Expires 1993-09-14 · 33y expired

What this patent protects

ABSTRACT OF THE INVENTION A compound of the formula : (I) (wherein R is -SO2Ri or -CONHR2; R' is C1-C6 alkyl, C8-C1 2 phenyl-alkenyl, amino, dimethylamino, optionally substituted C6-C1 2 aryl, or 5- or 6-membered heterocyclic group including at least one hetero ato…

USPTO Abstract

ABSTRACT OF THE INVENTION A compound of the formula : (I) (wherein R is -SO2Ri or -CONHR2; R' is C1-C6 alkyl, C8-C1 2 phenyl-alkenyl, amino, dimethylamino, optionally substituted C6-C1 2 aryl, or 5- or 6-membered heterocyclic group including at least one hetero atom selected from the group consisting of N, S, and O; R2 is amino, C1-C6 alkylamino, C1-C6 alkyl, or optionally substituted C6-C1 2 aryl)or its pharmaceutically acceptable acid-addition salt, being useful as a drug for senile dementia, psychotropic, or antiamnesia agent is provided through several routes.

Drugs covered by this patent

Patent Metadata

Patent number
CA1322199C
Jurisdiction
CA
Classification
—
Expires
1993-09-14
Drug substance claim
No
Drug product claim
No
Assignee
Shionogi and Co Ltd
Source
FDA Orange Book + USPTO grounding via Google Patents

Bibliographic data sourced from FDA Orange Book + USPTO public records. Plain-English summary generated by AI grounded in source text. Patent term extensions (PTR, SPC, pediatric) may shift the effective expiry. Not legal advice.

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