Development and Evaluation of Novel Phosphotyrosine Mimetic Inhibitors Targeting the Src Homology 2 Domain of Signaling Lymphocytic Activation Molecule (SLAM) Associated Protein
作者:Chi-Yuan Chu、Chun-Ping Chang、Yun-Ting Chou、Handoko、Yi-Ling Hu、Lee-Chiang Lo、Jing-Jer Lin
DOI:10.1021/jm301610q
日期:2013.4.11
Specific interactions between Src homology 2 (SH2) domain-containing proteins and the phosphotyrosine-containing counterparts play significant role in cellular proteintyrosine kinase (PTK) signaling pathways. The SH2domain inhibitors could potentially serve as drug candidates in treating human diseases. Here we have incorporated a novel phosphotyrosine mimetic, which is an unusual amino acid carrying
Synthesis of Novel Glycopeptidomimetics Containing<i>O</i>- and<i>N</i>-Glycosylated α-Aminooxy Acids by Fragment Coupling on Solid Support
作者:Injae Shin、Myung-ryul Lee、Jiyong Lee
DOI:10.1055/s-2002-33509
日期:——
New glycosylated peptidomimetics possessing O- and N-glycosylated α-aminooxy acids were efficiently synthesized by fragment coupling on solid support. The N-terminal glycosylated tripeptide mimics prepared in solution were coupled to the C-terminal dipeptides attached to the resin under O-(7-azabenzotriazole-1-yl)-1,1,3,3-tetramethyluronium hexafluorophosphate (HATU)/1-hydroxy-7-azabenzotriazole (HOAt)/N-ethylmorpholin (NEM) conditions.
Thiopeptide Pyridine Synthase TbtD Catalyzes an Intermolecular Formal Aza-Diels–Alder Reaction
作者:Jonathan W. Bogart、Albert A. Bowers
DOI:10.1021/jacs.8b11852
日期:2019.2.6
Thiopeptide pyridine synthases catalyze a multistep reaction involving a unique and nonspontaneous intramolecular aza-[4 + 2] cycloaddition between two dehydroalanines to forge a trisubstituted pyridine core. We discovered that the in vitro activity of pyridine synthases from the thiocillin and thiomuracin pathways are significantly enhanced by general base catalysis and that this broadly expands the
Process For Extraction Of Peptides And Its Application In Liquid Phase Peptide Synthesis
申请人:Monnaie Didier
公开号:US20140213759A1
公开(公告)日:2014-07-31
A process for extraction of a peptide from a reaction mixture resulting from a peptide coupling reaction, the reaction mixture containing the peptide and a polar aprotic solvent selected from the group consisting of N,N-dimethylformamide, N,N-dimethylacetamide and N-methyl-2-pyrrolidone, whereby the process includes a step a) and a step b): step a) including the addition of a component a1) and a component a2), whereby component a1) is 2-methyltetrahydrofuran and component a2) is water, to the reaction mixture, so that a biphasic system with an organic layer and an aqueous layer is obtained; step b) including the subsequent separation of the organic layer containing the peptide from the aqueous layer. In an embodiment, a combination of 2-methyltetrahydrofuran and an organic solvent 1 selected from the group consisting of n-heptane, toluene, ethylacetate, isopropylacetate, acetonitrile and tetrahydrofuran is used for the process for extraction. The extraction step is preferably used in a process for preparation of a peptide in liquid phase.