Efficient Route to <i>C</i><sub>2</sub> Symmetric Heterocyclic Backbone Modified Cyclic Peptides
作者:Jan H. van Maarseveen、W. Seth Horne、M. Reza Ghadiri
DOI:10.1021/ol0518028
日期:2005.9.1
[reaction: see text] A tandem dimerization-macrocyclization approach using 1,3-dipolar azide-alkyne cycloaddition reactions has been employed in the facile and convergent solution phase syntheses of C2 symmetric cyclic peptide scaffolds bearing triazole epsilon2-amino acids as dipeptide surrogates.
Preparation of (R)-2-azidoesters from 2-((p-nitrobenzene)sulfonyl)oxy esters and their use as protected amino acid equivalents for the synthesis of di- and tripeptides containing D-amino acid constituents
作者:Robert V. Hoffman、Hwa-Ok Kim
DOI:10.1016/s0040-4020(01)92245-8
日期:1992.4
(R)-2-Azidoesters and their derived (R)-2-azido acids are readily prepared from common aminoacids by an inversion methodology that employs (S)-2-nosyloxyesters as key intermediates. The (R)-2- azidoesters can be used as protected aminoacid equivalents in peptide synthesis. Basic hydrolysis frees the carboxyl group. Triphenylphosphine/water is used to free the amine group. By these reactions a variety
A Chemoenzymatic Approach to the Synthesis of Glycopeptide Antibiotic Analogues
作者:Julien Tailhades、Yongwei Zhao、Y. T. Candace Ho、Anja Greule、Iftekhar Ahmed、Melanie Schoppet、Ketav Kulkarni、Rob J. A. Goode、Ralf B. Schittenhelm、James J. De Voss、Max J. Cryle
DOI:10.1002/anie.202003726
日期:2020.6.26
crosslinking enzymes for altered substrates is largely unknown. We show that combining peptide synthesis with enzymatic cyclisation enables the formation of novel examples of GPAs and provides an indication of the utility of these crucial enzymes. By accessing the biosynthetic process in vitro, we identified peptide modifications that are enzymatically tolerated and can also reveal the mechanistic basis for substrate
The limited scope of antiviral drugs and increasing problem of antiviral drug resistance represent a global health threat. Glycopeptide antibiotics and their lipophilic derivatives have emerged as relevant inhibitors of diverse viruses. Herein, we describe a new strategy for the synthesis of dual hydrophobic and lipophobic derivatives of glycopeptides to produce selective antiviral agents without membrane‐disrupting