Synthesis and reactions of O-acetylated benzyl α-glycosides of 6-O-(2-acetamido-2-deoxy-β-d-glucopyranosyl)-N-acetylmuramoyl-l-alanyl-d-isoglutamine esters: the base-catalysed isoglutamine ⇄ glutamine rearrangement in peptidoglycan-related structures
作者:Dina Keglević、Andrew E. Derome
DOI:10.1016/0008-6215(89)84005-4
日期:1989.2
Abstract Condensation of benzyl 2-acetamido-6- O -(2-acetamido-3,4,6-tri- O -acetyl-2-deoxy-3- O -[( R -1-carboxyethyl]-α- d -glucopyranoside ( 2 ) and its 4-acetate ( 4 ) with l -alanyl- d -isoglutamine benzyl ester via the mixed anhydride method yielded N -[2- O -[benzyl 2-acetamido-6- O -(2-acetamido-3,4,6-tri- O -acetyl-2-deoxy-β- d -glucopyranosyl)-2,3-dideoxy-α- d -glucopyranosid-3-yl]-( R )-
作者:V. O. Kur'yanov、T. A. Chupakhina、A. E. Zemlyakov、V. Ya. Chirva、V.V. Ishchenko、V. P. Khilya
DOI:10.1023/a:1017694224906
日期:——
The synthesis of beta-(2-methyl-3-phenylchromonyl-7)- and beta-[2-methyl-3-(3,4-trimethylenedioxy) phenylchromonyl-7]glycosides of the methyl ester of N-acetylmuramoyl-L-alanyl-D-isoglutamine, new derivatives of a muramoyldipeptide with chromone aglycones, is described. The starting arylglycosides of N-acetylglucosamine are prepared by glycosylation of 7-hydroxychromone derivatives with the peracetate of alpha -glucosamine chloride catalyzed by a crown ether. The synthesized beta -aryl-4,6-O-isopropylidene-N-acetylmuramic acids are condensed with the dipeptide and deprotected to give the desired glycopeptides.
Immobilization of synthetic glycopeptides on polymeric supports