Processes of producing glutamic acid compounds and production intermediates therefor and novel intermediate for the processes

Abstract From the Canadian patent

A process for preparing industrially and efficiently glutamic acid compounds such as monatin useful as sweeteners or intermediates for the production of drugs or the like a process for preparation of intermediates used therein novel intermediates included among them a process for preparation of optically active monatin a process for preparation of intermediates used therein and novel intermediates included among them. Specifically, a process for the preparation of glutamic acid compounds or salts thereof including monatin which , comprises preparing a ketoglutaric acid compound serving as a precursor of the objective glutamic acid compound by condensing a specific pyruvic acid …