alpha-Ketoglutaramic acid (KGM, alpha-ketoglutaramate), also known as 2-oxoglutaramic acid (OGM, 2-oxoglutaramate), is a substrate of omega-amidase, also known as Nitrilase 2 (NIT2), and is essential for studying the canonical role of omega-amidase, as well as its role in multiple diseases. Until now, KGM used for biological studies has been prepared most often by the enzymatic oxidation of L-glutamine using snake venom L-amino acid oxidase, which provides KGM as an aqueous solution, containing by-products including 5-oxoproline and alpha-ketoglutarate. The enzymatic method for KGM preparation, therefore, cannot provide pure product or an accurate percent yield evaluation. Here, we report a synthetic method for the preparation of this important substrate, KGM, in 3 steps, from L-2-hydroxyglutaramic acid, in pure form, in 53% overall yield.
Preparation of 2-hydroxy-5-oxoproline and analogs thereof
申请人:The Regents of the University of California
公开号:US06288240B1
公开(公告)日:2001-09-11
The compound 2-hydroxy-5-oxoproline and analogs thereof may be used to produce an increase in carbon dioxide fixation, growth, dry weight, nutritional value (proteins and amino acids), nodulation and nitrogen fixation and photosynthetically derived chemical energy when applied to plants through their roots and/or through their foliar portions. The present invention includes an essentially quantitative chemical synthesis for this compound which is performed in a single step reaction of Fremy's Salt (potassium nitrosodisulphonate) with either glutamine or 2-pyrrolidone-5-carboxylic acid. Fremy's salt (potassium nitrosodisulphonate) is available commercially, or can be readily synthesized.
Otani; Meister, Journal of Biological Chemistry, 1957, vol. 224, p. 137,143
作者:Otani、Meister
DOI:——
日期:——
Meister, Journal of Biological Chemistry, 1953, vol. 200, p. 571,572, 574
作者:Meister
DOI:——
日期:——
Thayer; Horowitz, Journal of Biological Chemistry, 1951, vol. 192, p. 755,761
作者:Thayer、Horowitz
DOI:——
日期:——
Synthesis of α-Ketoglutaramic acid
作者:Dunxin Shen、Laken Kruger、Tyler Deatherage、Travis T. Denton
DOI:10.1016/j.ab.2020.113862
日期:2020.10
alpha-Ketoglutaramic acid (KGM, alpha-ketoglutaramate), also known as 2-oxoglutaramic acid (OGM, 2-oxoglutaramate), is a substrate of omega-amidase, also known as Nitrilase 2 (NIT2), and is essential for studying the canonical role of omega-amidase, as well as its role in multiple diseases. Until now, KGM used for biological studies has been prepared most often by the enzymatic oxidation of L-glutamine using snake venom L-amino acid oxidase, which provides KGM as an aqueous solution, containing by-products including 5-oxoproline and alpha-ketoglutarate. The enzymatic method for KGM preparation, therefore, cannot provide pure product or an accurate percent yield evaluation. Here, we report a synthetic method for the preparation of this important substrate, KGM, in 3 steps, from L-2-hydroxyglutaramic acid, in pure form, in 53% overall yield.