83945-01-1Relevant articles and documents
1,3-Oxazolidin-5-ones derived from proline as chiral components in the synthesis of predictive enantioselective coupling reagents
KAsperowicz-Frankowska, Katarzyna,Kolesińska, Beata,Gzik, Anna,Jastrzabek, Konrad,Kamiński, Zbigniew J.
, p. 921 - 927 (2018/09/22)
1,3-Oxazolidin-5-ones derived from both enantiomers of proline and trichloroacetaldehyde were prepared and applied as an amine component in the synthesis of chiral predictive triazine-based coupling reagents. The reagents were found to be useful in condensations yielding enantiomerically enriched products from racemic substrates.
Intermolecular Aminolyses of 1-Thioglycosyl Esters of N-Acylamino Acids
Ljevakovic, Durdica,Tomic, Srdanka,Tomasic, Jelka,Horvat, Jaroslav
, p. 1329 - 1337 (2007/10/03)
Fully acetylated 1-thioglycopyranosyl esters of N-acylamino acids (1-3), comprising different 1-thio sugars, undergo aminolysis with glycine methyl ester in dichloromethane at 40° to form the corresponding N-acyldipeptide methyl esters. The relative reactivity of the C-1 thioester bond towards aminolysis depends inter alia on the structure of the sugar moiety. Acylating efficiency of the 1-thioesters was additionally demonstrated by aminolysis of 2,3,4,6-tetra-O-acetyl-1-S-(N-tert-butyloxycarbonyl-L-tyrosyl)-1-thio-β-D- glucopyranose (3h) with peptidoglycan monomer (PGM, a disaccharide-pentapeptide) in N,N-dimethylformamide at room temperature to give the corresponding disaccharide-hexapeptide.
PEPTIDE BOND FORMATION BY INTERMOLECULAR AMINOLYSIS OF D-GLUCOPYRANOSYL ESTERS OF AMINO ACIDS
Horvat, Stefica,Keglevic, Dina
, p. 89 - 96 (2007/10/02)
The reaction of HO-protected and -unprotected D-glucopyranosyl esters of N-acylamino acids (Gly, Ala, Phe) with glycine and phenylalanine methyl esters in N,N-dimethylformamide at 38 deg C and dichloromethane at 40 deg C, respectively, led to repture of the C-1 ester bond and formation of the corresponding N-acyldipeptide methyl ester.The relative reactivity of the C-1 ester bond toward aminolysis was greatly influenced by the structure of the amino acid nucleophile, the nature of the aglycon side-chain group, and the anomeric configuration of the D-glucopyranosyl ester involved.Evidence for a substantially lower acylating efficiency of the ester at C-2, as compared to that at C-1, was obtained by aminolysis of two fully acetylated 2-O-(acylaminoacyl)-β-D-glucopyranoses.Treatment of 1-O-(glycylglycylglycyl)-β-D-glucopyranose with phenylalanine methyl ester in N,N-dimethylformamide led to parallel hydrolysis and intermolecular aminolysis, to give the tripeptide and tetrapeptide methyl ester.