IMPROVED PROCESS FOR THE PREPARATION OF AN OPTICALLY ACTIVE 5H-PYRROLO [3,4-B] PYRAZINE DERIVATIVE

IMPROVED PROCESS FOR THE PREPARATION OF AN OPTICALLY ACTIVE 5H-PYRROLO [3,4-B] PYRAZINE DERIVATIVE

A substantially pure dextrorotatory isomer of zopiclone or a pharmaceutically acceptable salt thereof and crystalline forms thereof are provided. Also provided is a process for its preparation and pharmaceutical compositions containing same. L'invention concerne un isomère dextrogyre de zopiclo...

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Bibliographische Detailangaben
Hauptverfasser: PRADHAN, NITIN, SHARAD, CHANDRA, PILLAI, BIJU, KUMAR, GOPINATHEN, JOSHI, NARENDRA, SHRIRAM, ARJUNAN, SANKAR
Format: Patent
Sprache:eng ; fre
Schlagworte:
CHEMISTRY
HETEROCYCLIC COMPOUNDS
METALLURGY
ORGANIC CHEMISTRY
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Beschreibung
Zusammenfassung:A substantially pure dextrorotatory isomer of zopiclone or a pharmaceutically acceptable salt thereof and crystalline forms thereof are provided. Also provided is a process for its preparation and pharmaceutical compositions containing same. L'invention concerne un isomère dextrogyre de zopiclone sensiblement pur, ou un sel pharmaceutiquement acceptable de cet isomère, ainsi que des formes cristallines dudit isomère, L'invention concerne en outre un procédé pour sa préparation et des compositions pharmaceutiques le renfermant.