C-Glycoside Analogues ofN4-(2-Acetamido-2-deoxy-?-D-glucopyranosyl)-L-asparagine: Synthesis and conformational analysis of a cyclicC-glycopeptide
作者:Matthias Hoffmann、Fred Burkhart、Gerhard Hessler、Horst Kessler
DOI:10.1002/hlca.19960790602
日期:1996.9.18
propanoic acid (22) can be used in solid-phase peptide synthesis. The conformation of 24 was determined by NMR and molecular-dynamics (MD) techniques. Evidence is provided that the CGaa side chain interacts with the peptide backbone. The different C-glycosylated amino acids 15–21 were prepared by coupling 3-acetamido-2,6-anhydro-4,5,7-tri-O-benzyl-3-deoxy-β-D-glycero-D-gulo-heptonic acid (4) with diamino-acid
的合成Ç糖苷类似物15-22的ñ 4 - (2-乙酰氨基-2-脱氧- β-d-D-吡喃葡萄糖基)-L-天冬酰胺(ASN(Ñ 4的GlcNAc))具有相反的酰胺键为电子等排取代给出了N-糖苷键的结构。制备了肽环(-D-Pro-Phe-Ala-CGaa-Phe-Phe-)(CGaa = C-糖基化氨基酸;24),以证明3-[(3-acetamido-2,6-anhydro- 4,5,7-三-O-苄基-3-脱氧-β-D-甘油-D-邻庚基庚酰基)氨基] -2-[(9 H-氟-9-酰氧基羰基)氨基]丙酸(22)可以用于固相肽合成。的构象通过NMR和分子动力学(MD)技术确定24。提供的证据表明,CGaa侧链与肽主链相互作用。不同Ç -glycosylated氨基酸15-21被偶合制备3-乙酰氨基-2,6-脱水-4,5,7-三ö苄基-3-脱氧β-D-甘油基-D-庚-带有二氨基酸衍生物8-14的庚酸(4