Salicylaldehyde Ester-Induced Chemoselective Peptide Ligations: Enabling Generation of Natural Peptidic Linkages at the Serine/Threonine Sites
摘要:
A serine/threonine-based chemoselective ligation method is described. It uses an O-salicylaldehyde ester at the C-terminus, reacting with N-terminal serine or threonine to realize peptide ligations. The utility of the O-salicylaldehyde ester enables the rapid coupling reaction and the production of an N,O-benzylidene acetal intermediate, which is readily converted into natural peptidic linkages (Xaa-Ser/Thr) at the ligation site.
Aldehyde Capture Ligation for Synthesis of Native Peptide Bonds
作者:Monika Raj、Huabin Wu、Sarah L. Blosser、Marc A. Vittoria、Paramjit S. Arora
DOI:10.1021/jacs.5b03538
日期:2015.6.3
reactions for amide bondformation have transformed the ability to access synthetic proteins and other bioconjugates through ligation of fragments. In these ligations, amide bondformation is accelerated by transient enforcement of an intramolecular reaction between the carboxyl and the amine termini of two fragments. Building on this principle, we introduce an aldehyde capture ligation that parlays
ALDEHYDE CAPTURE LIGATION TECHNOLOGY FOR SYNTHESIS OF AMIDE BONDS
申请人:New York University
公开号:US20170247324A1
公开(公告)日:2017-08-31
The present invention relates to ligation agents and their use in making an amide ligation product. Methods of making the ligation agents are also disclosed.
本发明涉及连接剂及其在制备酰胺连接产物中的应用。还公开了制备连接剂的方法。
Generation of α-acetoxyglycine residues within peptide chains: a new strategy for the modification of oligopeptides
Seryl and threonyl peptides are converted into α-acetoxyglycyl peptides by treatment with leadtetraacetate. Reaction of these acetoxy derivatives or the more reactive α-chloroglycyl peptides with thiols, dithiols and carbohydrates allows the attachment of such units to peptide chains. The reaction of α-chloroglycyl peptides with amino acid esters and enamines proceeds with high stereoselectivity and
A serine/threonine-based chemoselective ligation method is described. It uses an O-salicylaldehyde ester at the C-terminus, reacting with N-terminal serine or threonine to realize peptide ligations. The utility of the O-salicylaldehyde ester enables the rapid coupling reaction and the production of an N,O-benzylidene acetal intermediate, which is readily converted into natural peptidic linkages (Xaa-Ser/Thr) at the ligation site.