C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
C07C 237/12 (2006.01) C07C 231/24 (2006.01) C07K 5/072 (2006.01) C07C 237/20 (2006.01)
Patent
CA 2301187
There is provided a process for purification of N-(3,3-dimethylbutyl)-.alpha.-L-aspartyl-L-phenylalanine methyl ester comprising the step of contacting impure N-(3,3-dimethylbutyl)-.alpha.-L-aspartyl-L-phenylalanine methyl ester containing at least .alpha.-L-aspartyl-L-phenylalanine methyl ester as an impurity, with the mixed solvents having two layers of one layer given from at least one organic solvent which does not mix with water homogeneously and one layer of water to extract N-(3,3-dimethylbutyl)-.alpha.-L-aspartyl-L-phenylalanine methyl ester in the organic solvent layer. In the present invention, the desired compound can be purified or recovered efficiently in a high yield without using burdensome steps or operations.
La présente invention concerne un procédé permettant de purifier et de récupérer de façon satisfaisante un édulcorant, et ce, avec un rendement élevé, sans avoir à effectuer des opérations de traitement compliquées. Le procédé consiste à prendre un méthyl N-(3,3-diméthylbutyl)- alpha -L-aspartyl-L-phénylalaninate comportant en impureté au moins du méthyl alpha -L-aspartyl-L-phénylalaninate en mélange avec un solvant, et à former deux couches, l'une d'eau et l'autre de solvant non miscible avec l'eau, de façon à extraire le méthyl N-(3,3-diméthylbutyl)- alpha -L-aspartyl-L-phénylalaninate avec la couche de solvant organique.
Ajinomoto Co. Inc.
Norton Rose Or S.e.n.c.r.l. S.r.l./llp
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