Fully Enzymatic Peptide Synthesis using C-Terminal tert-Butyl Ester Interconversion
作者:Timo Nuijens、Claudia Cusan、Theodorus J. G. M. van Dooren、Harold M. Moody、Remco Merkx、John A. W. Kruijtzer、Dirk T. S. Rijkers、Rob M. J. Liskamp、Peter J. L. M. Quaedflieg
DOI:10.1002/adsc.201000313
日期:2010.10.4
Chemoenzymatic peptide synthesis is potentially the most cost-efficient technology for the synthesis of short and medium-sized peptides with some important advantages. For instance, stoichiometric amounts of expensive coupling reagents are not required and racemisation does not occur, thus rendering purification easier compared to chemical peptide synthesis. The economically most attractive synthesis runs in the
natural peptides with multiple N-methylamino acids that exhibit potent attractive biological activities. N-methylation of a peptide bond(s) is also one of the standard approaches in medicinal chemistry of bioactive peptides, to improve the potency and physicochemical properties, especially membrane permeability. In this study, we investigated a facile synthesis process of N-methylated peptides via simultaneous
Peptide Heterocycle Conjugates: A Diverted Edman Degradation Protocol for the Synthesis of N-Terminal 2-Iminohydantoins
作者:Ghotas Evindar、Robert A. Batey
DOI:10.1021/ol034032d
日期:2003.4.1
[reaction: see text] A modified Edmandegradation procedure provides an effective means of introducing a heterocycle at the N-terminus of an alpha-amino acid amide or peptide. Reaction of a peptide with an isothiocyanate, followed by dehydrothiolative trapping of the intermediate thiourea, by intramolecular cyclization of the weakly nucleophilic adjacent amide nitrogen, generates an iminohydantoin
Oxidative peptide bond formation of glycine–amino acid using 2-(aminomethyl)malononitrile as a glycine unit
作者:Xiaoling Wang、Jing Li、Yujiro Hayashi
DOI:10.1039/d1cc00130b
日期:——
of glycine–amino acid was synthesized by coupling of substituted 2-(aminomethyl)malononitrile as a C-terminal glycine unit and N-terminal amine using CsOAc and O2 in an aqueous solution. This is a coupling reagent-free and catalyst-free peptide synthesis via oxidative amide bond formation. Various tripeptides and tetrapeptides were synthesized efficiently and the sulfide moiety is inert even under
overcoming their disadvantages, and exhibit superiority in addressing the notorious racemization/epimerization issue. The applicability of ynamide coupling reagents has been successfully expanded to peptide fragment condensation, head-to-tail cyclization, and solid-phase peptide synthesis on the basis of a systematic mechanisticstudy.