IMPROVED PROCESS FOR PREPARING XANTHINE DERIVATIVES, IN PARTICULAR 1,3-DIPROPYL-8-(3-OXOCYCLOPENTYL)-XATHINE

IMPROVED PROCESS FOR PREPARING XANTHINE DERIVATIVES, IN PARTICULAR 1,3-DIPROPYL-8-(3-OXOCYCLOPENTYL)-XATHINE

The present invention relates to an improved preparation process for xanthines substituted in the 8-position via alkaline ring-closure reaction of the corresponding uracils in the presence of lithium hydroxide.

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Bibliographische Detailangaben
Hauptverfasser: LUETTKE, SVEN, KUEFNER-MUEHL, ULRIKE
Format: Patent
Sprache:eng ; fre
Schlagworte:
CHEMISTRY
HETEROCYCLIC COMPOUNDS
METALLURGY
ORGANIC CHEMISTRY
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Beschreibung
Zusammenfassung:The present invention relates to an improved preparation process for xanthines substituted in the 8-position via alkaline ring-closure reaction of the corresponding uracils in the presence of lithium hydroxide.