Chemoselective Removal of Protecting Groups from <i>O</i>-Glycosyl Amino Acid and Peptide (Methoxyethoxy)ethyl Esters Using Lipases and Papain
作者:Jörg Eberling、Peter Braun、Danuta Kowalczyk、Michael Schultz、Horst Kunz
DOI:10.1021/jo951899j
日期:1996.1.1
selective C-terminal deprotection of O-glycopeptide (methoxyethoxy)ethyl esters is achieved under mild conditions (pH 6.6, 37 degrees C) by enzymatic hydrolysis using papain or lipase M from Mucor javanicus to give building blocks useful for chain-extending glycopeptide synthesis. On the other hand, the selective removal of acetyl protecting groups from the saccharide portion of glycopeptides is accomplished
O-糖肽(甲氧基乙氧基)乙酯的选择性C末端脱保护是在温和条件下(pH 6.6,37摄氏度),通过木瓜蛋白酶或木脂酶M的脂肪酶M酶促水解实现的,从而提供了可用于扩链糖肽合成的结构单元。另一方面,从糖肽的糖部分选择性除去乙酰基保护基团是通过用脂肪酶WG从小麦胚芽中进行选择性酶水解,为酶促糖基转移反应提供模型底物来实现的,以延长这些缀合物的碳水化合物侧链。 。