Processes of producing glutamic acid compounds and production intermediates therefore and novel intermediate for the processes
申请人:Kawahara Shigeru
公开号:US20050004394A1
公开(公告)日:2005-01-06
The present invention relates to processes of producing glutamic acid compounds, for example, monatin, which are useful as, for example, production intermediates for sweetener or pharmaceutical products.
本发明涉及生产谷氨酸化合物的过程,例如,单甜菜碱,它们可用作甜味剂或制药产品的生产中间体。
Novel aldolase, and method for producing optically active IHOG and monatin
申请人:Sugiyama Masakazu
公开号:US20060003426A1
公开(公告)日:2006-01-05
The present invention relates to a method for producing optically active IHOG, which can in turn be used for the production of monatin. The present invention further relates to a method for producing optically active monatin, and aldolase used for these methods. As such, the present invention enables the synthesis of 4-(Indole-3-ylmethyl)-4-hydroxy-2-oxoglutaric acid with high optical purity, which is useful as an intermediate in the synthesis of optically active monatin, from indole pyruvic acid and pyruvic acid (or oxaloacetic acid).
By simultaneously carrying out an isomerization reaction at position 2 of monatin in different configurations at positions 2 and 4 in the presence of an aldehyde under a condition of pH 4 to 11 in a mixture solvent of water and an organic solvent, and the crystallization of monatin in the same configurations at positions 2 and 4 or a salt thereof, monatin useful as a sweetener, particularly optically active monatin can efficiently be produced.
Aldolase, and method for producing optically active IHOG and monatin
申请人:Ajinomoto Co., Inc.
公开号:US07241599B2
公开(公告)日:2007-07-10
The present invention relates to a method for producing optically active IHOG, which can in turn be used for the production of monatin. The present invention further relates to a method for producing optically active monatin, and aldolase used for these methods. As such, the present invention enables the synthesis of 4-(Indole-3-ylmethyl)-4-hydroxy-2-oxoglutaric acid with high optical purity, which is useful as an intermediate in the synthesis of optically active monatin, from indole pyruvic acid and pyruvic acid (or oxaloacetic acid).
PROCESS FOR PRODUCING AN OPTICALLY ACTIVE COMPOUND
申请人:KAWAHARA Shigeru
公开号:US20080207920A1
公开(公告)日:2008-08-28
The present invention provides a process for selectively producing an enantiomer at position 4 of an optically active compound in the cross aldol reaction of pyruvic acid and indole-3-pyruvic acid. The process comprises the step of reacting pyruvic acid with indole-3-pyruvic acid in the presence of an optically active α-amino acid containing a secondary amine and a metal ion.