Versatile Set of Orthogonal Protecting Groups for the Preparation of Highly Branched Oligosaccharides
作者:Thomas J. Boltje、Chunxia Li、Geert-Jan Boons
DOI:10.1021/ol101951u
日期:2010.10.15
A new set of orthogonal protecting groups has been developed based on the use of a diethylisopropylsilyl (DEIPS), methylnaphthyl (Nap), allyl ether, and levulinoyl (Lev) ester. The protecting groups are ideally suited for the preparation of highlybranched oligosaccharides and their usefulness has been demonstrated by the chemical synthesis of a β-d-Man-(1→4)-d-Man disaccharide, which is appropriately
基于二乙基异丙基甲硅烷基 (DEIPS)、甲基萘基 (Nap)、烯丙基醚和乙酰丙酰基 (Lev) 酯的使用,开发了一组新的正交保护基团。保护基团非常适合制备高度支化的寡糖,其用途已通过 β- d -Man-(1→4)- d -Man 二糖的化学合成得到证明,该二糖经过适当保护以制备一系列土拉弗朗西斯菌脂多糖的不寻常核心区域的部分结构。