US Patent

US8772497 — Method for producing 1, 2-dihydropyridine-2-one compound

Composition of Matter · Assigned to Eisai R&D Management Co Ltd · Expires 2026-07-01 · 0y remaining

Vulnerability score 22/100 Ironclad — strong claim type, well-established, deep family

What this patent protects

This patent protects a method for commercially producing a specific 1,2-dihydropyridine-2-one compound, including crystals of 3-(2-cyanophenyl)-5-(2-pyridyl)-1-phenyl-1,2-dihydropyridin-2-one.

USPTO Abstract

The present inventions provide a method for commercially producing a 1,2-dihydropyridine-2-one compound represented by the following formula (III-a) wherein the ring A represents an optionally substituted 2-pyridyl group, the ring B represents an optionally substituted phenyl group, and the ring C represents an optionally substituted phenyl group. Further, the invention provides crystals of 3-(2-cyanophenyl)-5-(2-pyridyl)-1-phenyl-1,2-dihydropyridin-2-one and production processes therefore.

Drugs covered by this patent

Patent Metadata

Patent number
US8772497
Jurisdiction
US
Classification
Composition of Matter
Expires
2026-07-01
Drug substance claim
Yes
Drug product claim
No
Assignee
Eisai R&D Management 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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