Patent ID: 7064219
Filing Date: 2006-06-20
Classification: A23L,C07C,C07D

Abstract:
1. A process of producing monatin represented by the formula (7′) or a salt thereof: comprising: aldol reacting an indole-3-pyruvic acid represented by the formula (1′) or a salt thereof and an oxalacetic acid represented by the formula (2) or a salt thereof and decarboxylating: or cross aldol reacting an indole-3-pyruvic acid represented by the formula (1′) or a salt thereof and a pyruvic acid represented by the formula (2′) or a salt thereof: to obtain a 4-hydroxy-4-(3-indolylmethyl)-2-ketoglutaric acid represented by the formula (4′) or a salt thereof: and converting the carbonyl group of the ketoglutaric acid represented by the formula (4′) or a salt thereof to an amino group.