Method for producing aspartame derivative, method for...

C - Chemistry – Metallurgy – 07 – K

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C07K 5/075 (2006.01) A23L 1/236 (2006.01) C07K 5/072 (2006.01)

Patent

CA 2383137

A method for industrially producing N-[N-[3-(3-methoxy-4-hydroxyphenyl)propyl]- L-.alpha.-aspartyl]-L-phenylalanine 1-methyl ester which is useable as a sweetener, in particular, a process for producing the target compound at a high yield by a reductive alkylation reaction of Aspartame with 3-(3-methoxy-4- hydroxyphenyl)propionaldehyde or its derivative; a method of effectively purifying the target compound contaminated with impurities invading thereinto at various production stages (involving methods other than the above-described reductive alkylation), more particularly, a method of separating the target compound in the form of highly pure crystals; the crystals; sweeteners containing the same; and utilization thereof in various products which are to be sweetened.

L'invention porte sur un procédé de production industrielle d'ester N-[N-[3-(3-méthoxy-4-hydroxyphényl)propyl]-L-.alpha.-aspartyl]-L-phénylalanine 1-méthyle pouvant être utilisé comme édulcorant, notamment, sur un procédé de production du composé cible à haut rendement par une réaction d'alkylation réductrice de l'aspartame avec 3-(3-méthoxy-4-hydroxyphényl)propionaldéhyde ou son dérivé. L'invention porte également sur un procédé de purification efficace du composé cible contaminé par des impuretés qui se sont introduites dans celui-ci à diverses étapes de la production (incluant des procédés autres que l'alkylation réductrice précitée), plus particulièrement, sur un procédé de séparation du composé cible se présentant sous la forme de cristaux d'une haute pureté; sur des cristaux; des édulcorants les contenant et sur leur utilisation dans divers produits devant être édulcorés.

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