EP Patent

EP3473629A1 — Method for producing substituted polycyclic pyridone derivative and crystal of same

Assigned to Shionogi and Co Ltd · Expires 2019-04-24 · 7y expired

What this patent protects

The present invention provides a process for preparing a compound of the formula (II): wherein R 2 is unsubstituted alkyl, characterized by reacting a compound of the formula (I): wherein R 1 is hydrogen or a protecting group other than unsubstituted alkyl, with a compo…

USPTO Abstract

The present invention provides a process for preparing a compound of the formula (II): wherein R 2 is unsubstituted alkyl, characterized by reacting a compound of the formula (I): wherein R 1 is hydrogen or a protecting group other than unsubstituted alkyl, with a compound of the formula: R 2 -OH, wherein R 2 is as defined above, in the presence of a sodium salt and/or a magnesium salt.

Drugs covered by this patent

Patent Metadata

Patent number
EP3473629A1
Jurisdiction
EP
Classification
—
Expires
2019-04-24
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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