Expansion of Phosphane Treasure Box for Staudinger Peptide Ligation
作者:Kiran Bajaj、Girinath G. Pillai、Rajeev Sakhuja、Dalip Kumar
DOI:10.1021/acs.joc.0c01319
日期:2020.10.2
A smooth traceless ligation strategy using an air-stable phosphane probe (2-(diphenylphosphanyl)phenyl)methanol as a C-terminus activator has been demonstrated at simple and sterically hindered amino acid junctions (Gly, Ala, Trp, Glu). This Staudinger peptide ligation proceeds via formation of a seven-membered transition state to afford di-, tetra-, and pentapeptides in 78–95% yields. The experimental
Nonafluorobutanesulfonyl Azide: A Shelf-Stable Diazo Transfer Reagent for the Synthesis of Azides from Primary Amines
作者:José Ramón Suárez、Beatriz Trastoy、M. Eugenia Pérez-Ojeda、Rubén Marín-Barrios、Jose Luis Chiara
DOI:10.1002/adsc.201000417
日期:2010.10.4
Nonafluorobutanesulfonyl azide is an efficient, shelf-stable and cost-effective diazo transfer reagent for the synthesis of azidesfromprimaryamines. The reagent can also be successfully applied to the one-pot regioselective synthesis of 1,2,3-triazoles fromprimaryamines by a sequential diazo transfer and azide–alkyne 1,3-dipolar cycloaddition process catalyzed by copper. The cycloaddition step
Targeting the Unique Mechanism of Bacterial 1-Deoxy-<scp>d</scp>-xylulose-5-phosphate Synthase
作者:David Bartee、Caren L. Freel Meyers
DOI:10.1021/acs.biochem.8b00548
日期:2018.7.24
bisubstrate inhibitors bearing an acetylphosphonate (AP) pyruvate mimic and a distal negative charge mimicking the phosphoryl group of d-GAP, designed to target the unique form of DXP synthase that binds LThDP and d-GAP in a ternary complex. A d-phenylalanine-derived triazole acetylphosphonate (d-PheTrAP) emerged as the most potent inhibitor in this series, displaying slow, tight-binding inhibition
A water soluble CuI–NHC for CuAAC ligation of unprotected peptides under open air conditions
作者:Christelle Gaulier、Audrey Hospital、Bertrand Legeret、Agnès F. Delmas、Vincent Aucagne、Federico Cisnetti、Arnaud Gautier
DOI:10.1039/c2cc30515a
日期:——
A reducing agent-free version of CuAAC able to operate under open air conditions is reported. A readily-synthesizable, hydrophilic and highly stable CuIâNHC allows the clean ligations of unprotected peptides comprising sensitive side chains, at millimolar concentrations.
Methods and compositions for nucleic acid ligands against Shiga toxin and/or Shiga-like toxin
申请人:——
公开号:US20040023265A1
公开(公告)日:2004-02-05
The present invention concerns methods of preparing nucleic acid ligands against Shiga toxin and/or Shiga-like toxin, compositions comprising nucleic acid ligands that bind Shiga toxin and/or Shiga-like toxin, nucleic acid ligands comprising contiguous nucleotide sequences selected from SEQ ID NO:1 through SEQ ID NO:11 and methods of use of such ligands for detection and/or neutralization of Shiga toxin and/or Shiga-like toxin.
本发明涉及制备抗志贺毒素和/或志贺样毒素的核酸配体的方法、包含结合志贺毒素和/或志贺样毒素的核酸配体的组合物、包含选自SEQ ID NO:1至SEQ ID NO:11的连续核苷酸序列的核酸配体以及使用这种配体检测和/或中和志贺毒素和/或志贺样毒素的方法。