POLYMORPHS OF ZALEPLON AND METHODS FOR THE PREPARATION THEREOF

Title:

POLYMORPHS OF ZALEPLON AND METHODS FOR THE PREPARATION THEREOF

Document Type and Number:

WIPO Patent Application WO2002012244

Kind Code:

A3

Abstract:

This invention relates to novel crystalline polymorphic forms of zaleplon (N-[3-(3-cyanopyrazolo[1,5a]pyrimidin-7-yl)phenyl]-N-ethylacetamide), methods for the preparation thereof, and their uses as anxiolytic, antiepileptic, and sedative-hypnotic agents and skeletal muscle relaxants.

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Inventors:

ASLAM FARHAN (US)
COWANS BRETT (US)
BYRN STEPHEN R (US)
STAHLY G PATRICK (US)

Application Number:

PCT/US2001/024510

Publication Date:

June 13, 2002

Filing Date:

August 02, 2001

Export Citation:

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Assignee:

AMERICAN HOME PROD (US)
ASLAM FARHAN (US)
COWANS BRETT (US)
BYRN STEPHEN R (US)
STAHLY G PATRICK (US)

International Classes:

A61P21/02; A61P25/08; A61P25/20; A61P25/22; C07D487/04; (IPC1-7): C07D487/04; A61K31/519; A61P25/08; A61P25/22; A61P21/02; A61P25/20

Foreign References:

US4626538A	1986-12-02
EP0776898A1	1997-06-04

Other References: