کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1389858 | 982933 | 2007 | 9 صفحه PDF | دانلود رایگان |

β-Peptidic-d-gluco-, d-galacto-, and l-fuco-configured glycosyl amino acids can be prepared from the corresponding 2-deoxy-oct-3-ulopyranosonic acids via a one-pot intramolecular Ritter reaction. Initially, a ketopyranoside-based acid condenses under Lewis acid promoted conditions with nitriles (PhCN, MeCN) and a partially protected diamino ester (Boc-DAB-O-t-Bu, Boc-Orn-O-t-Bu) to form a β-peptidic glycosyl amino t-butylesters. The glycosyl amino t-butylesters can be converted into Fmoc-protected glycosyl amino acids that are suitably protected for solid-phase glycopeptide synthesis. Furthermore, replacement of the protected diamino ester by immobilized peptide amines permits post-synthetic N-terminal- and N(ε)-glycoconjugation of peptides on the solid phase.
Figure optionsDownload as PowerPoint slide
Journal: Carbohydrate Research - Volume 342, Issue 1, 15 January 2007, Pages 7–15