CRYSTALLINE 17BETA-HYDROXY-7ALPHA- (5'-METHYL-2'-FURYL)-PREGNA-4,9(11)-DIEN-3-ONE-21-CARBOXYLIC ACID, GAMMA-LACTONE

Title:

CRYSTALLINE 17BETA-HYDROXY-7ALPHA- (5'-METHYL-2'-FURYL)-PREGNA-4,9(11)-DIEN-3-ONE-21-CARBOXYLIC ACID, GAMMA-LACTONE

Document Type and Number:

WIPO Patent Application WO2004037844

Kind Code:

A8

Abstract:

The present invention involves a novel crystal form of 17beta-hydroxy-7alpha-(5'-methyl-2'-furyl)-pregna-4,9(11)-dien-3-one-21-carboxylic acid, gamma-lactone (II) which is an intermediate useful in preparation of an important pharmaceutical, eplerenone. (FORMULA)

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Inventors:

PEARLMAN BRUCE ALLEN (US)
ANTOSZ FREDERICK J (US)

Application Number:

PCT/US2003/029923

Publication Date:

June 10, 2004

Filing Date:

September 19, 2003

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Assignee:

UPJOHN CO (US)
PEARLMAN BRUCE ALLEN (US)
ANTOSZ FREDERICK J (US)

International Classes:

A61K31/58; C07J1/00; C07J21/00; (IPC1-7): C07J21/00

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