NOVEL STABLE CRYSTALS OF SUBSTITUTED PHENYLPROPIONIC ACID DERIVATIVE AND PROCESS FOR PRODUCING THE SAME

Preparation of (S)-2-ÄÄ3-ÄN-Ä4-Ä(4-fluorophenoxy)phenylÜ methylÜcarbamoylÜ-4-methoxyphenylÜmethylÜbutanoic acid (referred to as compound (I)) on an industrial scale lies in the finding of crystals homogeneous and excellent in the stability and the establishment of a preparative process thereof. Nove...

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Hauptverfasser:	KOIKE, TOMOMI, ORITA, KAZUO
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ACYCLIC OR CARBOCYCLIC COMPOUNDS CHEMISTRY 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:	Preparation of (S)-2-ÄÄ3-ÄN-Ä4-Ä(4-fluorophenoxy)phenylÜ methylÜcarbamoylÜ-4-methoxyphenylÜmethylÜbutanoic acid (referred to as compound (I)) on an industrial scale lies in the finding of crystals homogeneous and excellent in the stability and the establishment of a preparative process thereof. Novel crystals of compound (I) homogeneous and excellent in the stability characterized by exhibiting the diffraction angles (2 ) at at least 17.7 DEG , 19.0 DEG and 24.1 DEG in the X-ray powder diffraction are provided by'recrystallizing from an alcoholic solvent and purifying by acid-base treatment.