144331-21-5

Upstream product

• 50-00-0 formaldehyd 
• 91229-91-3 tert-butyl (S)-N-tert-butoxycarbonylpyroglutamate 

Downstream Products

• 127949-74-0 (2S,4R)-4-(benzyl)di-tert-butyl 5-oxopyrrolidine-1,2-dicarboxylate 
• 138858-47-6 tert-butyl (2S,4S)-N-(tert-butoxycarbonyl)-4-benzylpyroglutamate 

Relevant academic research and scientific papers

Stereospecific synthesis of (2S,4R)-[5,5,5-2H3]leucine

The first stereospecific chemical synthesis of a sample of the amino acid (2S)-leucine labelled in one of the diastereotopic methyl groups has been achieved using (2S)-pyroglutamic acid as a chiral template. This has been used to develop a method for assigning resonances to the diastereotopic methyl groups of the leucine residues in the 1H NMR spectra of proteins.

An efficient synthetic route tol-γ-methyleneglutamine and its amide derivatives, and their selective anticancer activity

In cancer cells, glutaminolysis is the primary source of biosynthetic precursors, fueling the TCA cycle with glutamine-derived α-ketoglutarate. The enhanced production of α-ketoglutarate is critical to cancer cells as it provides carbons for the TCA cycle to produce glutathione, fatty acids, and nucleotides, and contributes nitrogens to produce hexosamines, nucleotides, and many nonessential amino acids. Efforts to inhibit glutamine metabolism in cancer using amino acid analogs have been extensive.l-γ-Methyleneglutamine was shown to be of considerable biochemical importance, playing a major role in nitrogen transport inArachisandAmorphaplants. Herein we report for the first time an efficient synthetic route tol-γ-methyleneglutamine and its amide derivatives. Many of thesel-γ-methyleneglutamic acid amides were shown to be as efficacious as tamoxifen or olaparib at arresting cell growth among MCF-7 (ER+/PR+/HER2?), and SK-BR-3 (ER?/PR?/HER2+) breast cancer cells at 24 or 72 h of treatment. Several of these compounds exerted similar efficacy to olaparib at arresting cell growth among triple-negative MDA-MB-231 breast cancer cells by 72 h of treatment. None of the compounds inhibited cell growth in benign MCF-10A breast cells. Overall,N-phenyl amides andN-benzyl amides, such as3,5,9, and10, arrested the growth of all three (MCF-7, SK-BR-3, and MDA-MB-231) cell lines for 72 h and were devoid of cytotoxicity on MCF-10A control cells;N-benzyl amides with an electron withdrawing group at theparaposition, such as5and6, inhibited the growth of triple-negative MDA-MB-231 cells commensurate to olaparib. These compounds hold promise as novel therapeutics for the treatment of multiple breast cancer subtypes.

L-Y-METHYLENEGLUTAMINE COMPOUNDS AND METHODS OF USE

Disclosed are substantially pure L-y-methyleneglutamine, L-y- methyleneglutamic acid, and/or amide derivatives, and methods of use thereof. In particular, the presently disclosed subject matter relates to L-y-methyleneglutamine, L-y-methyleneglutamic acid, and/or amide derivatives thereof, and methods of treating cancer. The method comprises administering one or more substantially pure L-y-methyleneglutamine, L-y-methyleneglutamic acid, and/or amide derivatives to a subject in need thereof.

A study of polychlorinated leucine derivatives: Synthesis of (2S,4S)-5,5-dichloroleucine

The first total synthesis of (2S,4S)-5,5-dichloroleucine has been achieved in 11 steps from L-pyroglutamic acid. A key step is the dichlorination process on the hydrazone of aldehyde 13 with CuCl2 in triethylamine.

Stereospecific Synthesis of (2S,4R)--Leucine

The first fully stereospecific synthesis of a sample of the amino acid (2S)-leucine labelled in only one of the diastereotopic methyl groups has been achieved using (2S)-pyroglutamic acid as a chiral template. Key Words: leucine; stereospecific synthesis; amino acid; isotopic labelling; bio-organic