Novel Ester-Linked Carbohydrate−Peptide Adducts: Effect of the Peptide Substituent on the Pathways of Intramolecular Reactions
作者:Ivanka Jeric´、Štefica Horvat
DOI:10.1002/1099-0690(200104)2001:8<1533::aid-ejoc1533>3.0.co;2-y
日期:2001.4
Carbohydrate−peptide conjugates in which D-glucose is linked through an ester linkage to the carboxy group of Tyr-Pro (2), Tyr-Pro-Phe (5) or Tyr-Pro-Phe-Val (11), through the C6 hydroxy group of the sugar moiety were synthesized to examine the utility of this type of monosaccharide modification for peptide prodrugs. Evidence is provided that glycoconjugates 2, 5, and 11 easily undergo intramolecular
碳水化合物-肽缀合物,其中 D-葡萄糖通过酯键连接至 Tyr-Pro (2)、Tyr-Pro-Phe (5) 或 Tyr-Pro-Phe-Val (11) 的羧基,通过 C6合成糖部分的羟基以检查这种类型的单糖修饰对肽前药的效用。有证据表明,糖缀合物 2、5 和 11 容易发生分子内化学转化,随后攻击肽骨架上或 D-葡萄糖部分异头位置的游离 N 端氨基,导致二酮哌嗪的形成12、糖胺 13 或酮糖衍生物 15。数据表明肽链的长度和结构是控制所研究的碳水化合物-肽酯分子内反应的主要因素。