EP Patent

EP0373226A1 — Carbamoyl-2-pyrrolidinone compounds

Assigned to Taiho Pharmaceutical Co Ltd · Expires 1990-06-20 · 36y expired

What this patent protects

(a) nootropic agents containing 1-carbamoyl-2-pyrrolidinones of formula (I) as active component: where R1 is H, OH or lower alkyl (opt. substd. by hydroxy); R2 is phenyl, tetrahydronaphthyl, pyridyl or thiazolyl opt. substd. by lower alkoxy, lower alkylamino, halogen or halomethy…

USPTO Abstract

(a) nootropic agents containing 1-carbamoyl-2-pyrrolidinones of formula (I) as active component: where R1 is H, OH or lower alkyl (opt. substd. by hydroxy); R2 is phenyl, tetrahydronaphthyl, pyridyl or thiazolyl opt. substd. by lower alkoxy, lower alkylamino, halogen or halomethyl). (b) Compounds (I) are new, where R2 is phenyl, tetrahydronaphthyl, pyridyl or thiazolyl opt. substd. by methoxy or lower alkylamino; and R1 is as defined above; with the proviso that when R1 is H or unsubstd. lower alkyl, then R2 is not unsubstd. phenyl. New compounds (I) where R1 is H, OH, methyl or hydroxymethyl (pref. H or OH); R2 is phenyl, tetrahydronaphthyl, pyridyl or thiazolyl opt. substd. by 1 to 3 methoxy groups or dimethylamino (pref. phenyl or tetrahydronaphthyl opt. substd. by methoxy).

Drugs covered by this patent

Patent Metadata

Patent number
EP0373226A1
Jurisdiction
EP
Classification
—
Expires
1990-06-20
Drug substance claim
No
Drug product claim
No
Assignee
Taiho Pharmaceutical 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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