Invention Grant
- Patent Title: Process for preparing substituted polycyclic pyridone derivative and crystal thereof
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Application No.: US17578743Application Date: 2022-01-19
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Publication No.: US11807648B2Publication Date: 2023-11-07
- Inventor: Setsuya Shibahara
- Applicant: Shionogi & Co., Ltd.
- Applicant Address: JP Osaka
- Assignee: SHIONOGI & CO., LTD.
- Current Assignee: SHIONOGI & CO., LTD.
- Current Assignee Address: JP Osaka
- Agency: Wenderoth, Lind & Ponack, L.L.P.
- Priority: JP 16121453 2016.06.20
- The original application number of the division: US16310897
- Main IPC: C07D498/14
- IPC: C07D498/14
Abstract:
The present invention provides a process for preparing a compound of the formula (II):
wherein R2 is unsubstituted alkyl,
characterized by reacting a compound of the formula (I):
wherein R1 is hydrogen or a protecting group other than unsubstituted alkyl,
with a compound of the formula: R2—OH, wherein R2 is as defined above, in the presence of a sodium salt and/or a magnesium salt.
wherein R2 is unsubstituted alkyl,
characterized by reacting a compound of the formula (I):
wherein R1 is hydrogen or a protecting group other than unsubstituted alkyl,
with a compound of the formula: R2—OH, wherein R2 is as defined above, in the presence of a sodium salt and/or a magnesium salt.
Public/Granted literature
- US20220251107A1 PROCESS FOR PREPARING SUBSTITUTED POLYCYCLIC PYRIDONE DERIVATIVE AND CRYSTAL THEREOF Public/Granted day:2022-08-11
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