EP1683785A1 — Urea derivative and process for producing the same
Assigned to Eisai R&D Management Co Ltd · Expires 2006-07-26 · 20y expired
What this patent protects
A process for preparing a compound (C) represented by the following formula: wherein R 1 represents hydrogen, C 1-6 alkyl or C 3-8 cycloalkyl, and R 2 represents hydrogen or methoxy, characterized by reacting a compound (A-1) represented by the following formula: …
USPTO Abstract
A process for preparing a compound (C) represented by the following formula: wherein R 1 represents hydrogen, C 1-6 alkyl or C 3-8 cycloalkyl, and R 2 represents hydrogen or methoxy, characterized by reacting a compound (A-1) represented by the following formula: wherein R 1 has the same definition as above, with a compound (B) represented by the following formula: wherein R 2 has the same definition as above, and L represents a leaving group, is provided. Compound (C) is effective for prevention or treatment of various diseases associated with angiogenesis neoplasia.
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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