US Patent
US7253286 — Nitrogen-containing aromatic derivatives
Composition of Matter · Assigned to Eisai Co Ltd · Expires 2025-10-24 · 1y expired
Vulnerability score
7/100
Ironclad — strong claim type, well-established, deep family
What this patent protects
This patent protects a class of nitrogen-containing aromatic derivatives, specifically compounds with a certain general formula.
USPTO Abstract
Compounds represented by the following general formula: [wherein A<SUP>g </SUP>is an optionally substituted 5- to 14-membered heterocyclic group, etc.; X<SUP>g </SUP>is -O-, -S-, etc.; Y<SUP>g </SUP>is an optionally substituted C<SUB>6-14 </SUB>aryl group, an optionally substituted 5- to 14-membered heterocyclic group, etc.; and T<SUP>g1 </SUP>is a group represented by the following general formula: (wherein E<SUP>g </SUP>is a single bond or -N(R<SUP>g2</SUP>)-, R<SUP>g1 </SUP>and R<SUP>g2 </SUP>each independently represent a hydrogen atom, an optionally substituted C<SUB>1-6 </SUB>alkyl group, etc. and Z<SUP>g </SUP>represents a C<SUB>1-8 </SUB>alkyl group, a C<SUB>3-8 </SUB>alicyclic hydrocarbon group, a C<SUB>6-14 </SUB>aryl group, etc.)], salts thereof or hydrates of the foregoing.
Drugs covered by this patent
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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