Invention Grant
- Patent Title: Process for preparing substituted polycyclic pyridone derivative and crystal thereof
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Application No.: US16310897Application Date: 2017-06-19
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Publication No.: US11261198B2Publication Date: 2022-03-01
- Inventor: Setsuya Shibahara , Kosuke Anan
- 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: JPJP2016-121453 20160620
- International Application: PCT/JP2017/022478 WO 20170619
- International Announcement: WO2017/221869 WO 20171228
- 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.
Public/Granted literature
- US20210230187A1 PROCESS FOR PREPARING SUBSTITUTED POLYCYCLIC PYRIDONE DERIVATIVE AND CRYSTAL THEREOF Public/Granted day:2021-07-29
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