C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
C07C 233/63 (2006.01) C07C 227/42 (2006.01) C07C 231/24 (2006.01)
Patent
CA 2426745
A method for producing B-type crystals of nateglinide substantially free of H-type crystals is provided, which comprises drying solvated wet crystals of nateglinide at a low temperature until no solvent remains and making a crystal conversion thereof. According to this method, B-type crystals of nateglinide can be produced at an industrial scale without allowing other forms of the crystalline polymorphism to coexist.
Procédé de production de cristaux de natéglinide à forme B, ne contenant pratiquement pas de cristaux à forme H. Ledit procédé consiste à sécher des cristaux mouillés d'un solvate de natéglinide à une température basse jusqu'à ce que le solvant disparaisse, puis à provoquer dans ces cristaux une transition cristalline. Ce procédé permet de produire à une échelle industrielle des cristaux de natéglinide à forme B uniquement.
Maruo Makoto
Matsuzawa Yukiko
Miyazaki Kazuo
Nishina Shigehiro
Sumikawa Michito
Ajinomoto Co. Inc.
Norton Rose Or S.e.n.c.r.l. S.r.l./llp
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