Crystalline form of (R)-4-(5-(cyclopropylethynyl)isoxazol-3-yl)-N-hydroxy-2-methyl-2-(methylsulfonyl)butanamide as an antibacterial agent

Crystalline form of (R)-4-(5-(cyclopropylethynyl)isoxazol-3-yl)-N-hydroxy-2-methyl-2-(methylsulfonyl)butanamide as an antibacterial agent

The invention relates to a crystalline form of the (R)-4-(5- (cyclopropylethynyl)isoxazol-3-yl)-N-hydroxy-2-methyl-2- (methylsulfonyl)butanamide (i.e. the compound of formula (A)) with low hydroscopicity. The compound and compositions thereof are useful to treat bacterial infections and in particula...

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Bibliographische Detailangaben
Hauptverfasser: Sweeney, Zachary Kevin, Fu, Jiping, Jiang, Siyi, Kordikowski, Andreas
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
SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS ORMEDICINAL PREPARATIONS
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Zusammenfassung:The invention relates to a crystalline form of the (R)-4-(5- (cyclopropylethynyl)isoxazol-3-yl)-N-hydroxy-2-methyl-2- (methylsulfonyl)butanamide (i.e. the compound of formula (A)) with low hydroscopicity. The compound and compositions thereof are useful to treat bacterial infections and in particular Gram negative bacterial infections, including mult-drug resistant strains. The crystalline form is prepared by dissolving an amorphous form of the compound in a halogenated organic solvent (e.g. dichloromethane) and precipitating the crystalline form with a hydrocarbon solvent (e.g. heptane).(A)