METHOD FOR PRODUCING SUBSTITUTED POLYCYCLIC PYRIDONE DERIVATIVE AND CRYSTAL OF SAME

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 R...

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Bibliographic Details
Main Authors FUKUI, Nobuaki, MAKI, Toshikatsu, SHIBAHARA, Setsuya, ANAN, Kosuke
Format Patent
LanguageEnglish
French
German
Published 22.01.2020
Subjects
CHEMISTRY
HETEROCYCLIC COMPOUNDS
HUMAN NECESSITIES
HYGIENE
MEDICAL OR VETERINARY SCIENCE
METALLURGY
ORGANIC CHEMISTRY
PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES
SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS ORMEDICINAL PREPARATIONS
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Summary: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.
Bibliography:Application Number: EP20170815337