名称:
Synthesis and characterization by 13C-CP-MAS- and high resolution 1H-, 13C-NMR of new ureido sugars, derivatives of methyl 2-amino-2-deoxy-β-d-glucopyranose and dipeptides
摘要:
Dipeptide ethyl and benzyl esters were used as amination agents in reaction with methyl 3,4,6-tri-O-acetyl-2-deoxy-2-(4-nitrophenoxycarbonylamino)-beta-D-glucopyranoside(1). Ten new ureido sugars, derivatives of GlyAla, AlaGly, AlaAla, GlyVal, ValGly, LeuGly, PheGly, GlyPhe, and AlaPhe; were obtained. The new ureido sugars were studied by means of H-1- and C-13-NMR spectroscopy in solution, and C-13-CP-MAS-NMR in the solid-state. (C) 1997 Elsevier Science Ltd. All rights reserved.