作者:Michael Haller、Geert-Jan Boons
DOI:10.1039/b009845k
日期:——
Trisaccharide 23 and sulfated disaccharide 28 have been prepared by a strategy whereby the glucuronic acid moieties were introduced at a late stage of a synthetic sequence by selective oxidation of primary hydroxy groups with TEMPO and NaOCl. During the oxidation step, the primary hydroxy groups of glucosamine moieties were efficiently protected as TBDPS ethers. The oxidation procedure and removal of the TBDPS groups proved to be compatible with the presence of sulfate esters.
三糖23和硫酸化二糖28的制备策略是,在合成序列的后期阶段,通过用TEMPO和NaOCl选择性氧化伯羟基,引入葡萄糖醛酸部分。在氧化步骤中,葡萄糖胺部分伯羟基作为TBDPS醚得到有效保护。氧化过程和TBDPS基团的去除证明与硫酸酯的存在是兼容的。