Process for production of aspartame derivative, crystal thereof, novel production intermediate therefor, and process for production of intermediate thereof
申请人:Ajinomoto Co., Inc.
公开号:US20040230073A1
公开(公告)日:2004-11-18
The present invention relates to a method of manufacturing aspartyl dipeptide ester compounds, which can be used as sweeteners.
本发明涉及一种制造天冬氨酸二肽酯化合物的方法,该化合物可用作甜味剂。
PROCESS FOR PRODUCING ASPARTAME DERIVATIVE, CRYSTALS THEREOF, NOVEL PRODUCTION INTERMEDIATES THEREFOR AND PROCESS FOR PRODUCING THE INTERMEDIATE
申请人:Ajinomoto Co., Inc.
公开号:EP1219633A1
公开(公告)日:2002-07-03
3-(3-Hydroxy-4-methoxyphenyl)-3-methylbutylaldehyde is produced by subjecting 3-(3-hydroxy-4-methoxyphenyl)-3-methylbutyric acid to a reaction for converting a carboxyl group into a formyl group, whereby the carboxyl group in the butyric acid derivative is converted to a formyl group. Such 3-(3-hydroxy-4-methoxyphenyl)-3-methylbutyric acid can be obtained by reacting 2-halogenoanisole with 3-methylcrotonic acid to produce 3-(3-halogeno-4-methoxyphenyl)-3-methylbutyric acid, and converting the halogen atom in the thus produced butyric acid derivative into a hydroxyl group.
N-[N-[3-(3-hydroxy-4-methoxyphenyl)-3-methylbutyl]-L-α-aspartyl]-L-phenylalanine 1-methyl ester useful as a sweetener having a high degree of sweetness can be easily and efficiently derived on an industrial scale from the thus obtained aldehyde derivative in the reductive alkylation reaction with aspartame. Therefore, the aldehyde derivative is highly excellent as an intermediate for the production of the sweetener.