C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
C07C 231/24 (2006.01) C07C 237/12 (2006.01) C07C 233/47 (2006.01)
Patent
CA 2422349
A method for purifying N2-(1(S)-ethoxycarbonyl-3- phenylpropyl)-N6- trifluoroacetyl-L-lysine by subjecting N2-(1(S)-ethoxycarbonyl-3-phenylpropyl)- N6-trifluoroacetyl-L-lysine containing impurities to crystallization from a water-soluble aprotic organic solvent to thereby form crystals of N2-(1(S)- ethoxycarbonyl-3-phenylpropyl)-N6-trifluoro- acetyl-L-lysine with the impurities being dissolved in the mother liquor. This method permits the production of high-quality N2-(1(S)-ethoxycarbonyl-3-phenylpropyl)-N6- trifluoroacetyl-L-lysine in a high yield with high productivity, thus being suitable for practice on an industrial scale.
L'invention concerne une méthode qui permet de purifier un N?2¿-(1(S)-éthoxycarbonyl-3-phénylpropyl)-N?6¿-trifluoroacétyl-L-lysine contenant des impuretés en le soumettant à une cristallisation à partir d'un solvant organique aprotique soluble dans l'eau, afin de former des cristaux de N?2¿-(1(S)-éthoxycarbonyl-3-phénylpropyl)-N?6¿-trifluoroacétyl-L-lysine dont les impuretés ont été dissoutes dans la solution-mère. Cette méthode permet d'obtenir un N?2¿-(1(S)-éthoxycarbonyl-3-phénylpropyl)-N?6¿-trifluoroacétyl-L-lysine de grande qualité avec un rendement élevé, d'où des possibilités de production à échelle industrielle.
Iida Yasuhiro
Manabe Hajime
Ueda Yasuyoshi
Kaneka Corporation
Osler Hoskin & Harcourt Llp
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