CA Patent

CA3027840C — Method for producing substituted polycyclic pyridone derivative and crystal of same

Assigned to Shionogi and Co Ltd · Expires 2025-09-23 · 1y expired

What this patent protects

Provided is a method for producing a substituted polycyclic pyridone derivative. A method for producing a compound represented by formula (II), which is characterized in that a compound represented by formula (I) is reacted with a compound represented by formula R2-OH (wherein R2…

USPTO Abstract

Provided is a method for producing a substituted polycyclic pyridone derivative. A method for producing a compound represented by formula (II), which is characterized in that a compound represented by formula (I) is reacted with a compound represented by formula R2-OH (wherein R2 represents an unsubstituted alkyl group) in the presence of a sodium salt and/or a magnesium salt. (In formula (I), R1 represents a hydrogen atom or a protecting group other than an unsubstituted alkyl group.) (In formula (II), R2 is as defined above.)

Drugs covered by this patent

Patent Metadata

Patent number
CA3027840C
Jurisdiction
CA
Classification
—
Expires
2025-09-23
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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