Process for preparing substituted polycyclic pyridone derivative and crystal thereof

Process for preparing substituted polycyclic pyridone derivative and crystal thereof

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...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: Setsuya SHIBAHARA, Nobuaki FUKUI, Kosuke ANAN, Toshikatsu MAKI
Format: Patent
Sprache:eng ; heb
Schlagworte:
APPARATUS THEREFOR
CHEMISTRY
GENERAL METHODS OF ORGANIC CHEMISTRY
HUMAN NECESSITIES
HYGIENE
MEDICAL OR VETERINARY SCIENCE
METALLURGY
ORGANIC CHEMISTRY
PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES
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Beschreibung
Zusammenfassung: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.