Process for purifying N-[3-(3-cyanopyrazolo[1,5-a]pyrimidin-7-yl)phenyl]-n-ethylacetamide (zaleplon) and crystalline forms of zaleplon accessible with the process

Process for purifying N-[3-(3-cyanopyrazolo[1,5-a]pyrimidin-7-yl)phenyl]-n-ethylacetamide (zaleplon) and crystalline forms of zaleplon accessible with the process

Provided are novel Zaleplon crystalline Forms II, III, IV and V, which are useful for the treatment of insomnia.

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Bibliographische Detailangaben
Hauptverfasser: SINGER CLAUDE, MAGYAR ERIKA, FEHER ERIKA, KORODI FERENC
Format: Patent
Sprache:eng
Schlagworte:
CHEMISTRY
HETEROCYCLIC COMPOUNDS
HUMAN NECESSITIES
HYGIENE
MEDICAL OR VETERINARY SCIENCE
METALLURGY
ORGANIC CHEMISTRY
PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES
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Zusammenfassung:Provided are novel Zaleplon crystalline Forms II, III, IV and V, which are useful for the treatment of insomnia.