β-Glycosides of 2,3-Diazido-2,3-dideoxy-<scp>d</scp>-mannose, a Synthetic Precursor of a Rare Bacterial Cell-Wall Building Unit
作者:Zoltán Szurmai、János Rákó、Károly Ágoston、Alain Danan、Daniel Charon
DOI:10.1021/ol0058893
日期:2000.6.1
beta-glycosides of 2,3-diacetamido-2,3-dideoxy-D-mannuronic acid, a rare moiety of bacterial oligosaccharides. A direct glycosyl donor, 4,6-di-O-acetyl-2,3-diazido-2,3-dideoxy-alpha-D-mannopyranosyl bromide, was prepared, and its synthetic capacity was tested in glycosylation reactions. An indirect route was also elaborated: 3-azido-3-deoxy-beta-D-glucopyranosides were converted into beta-D-mannopyranosides
合成2,3-二叠氮-2,3-二脱氧-β-D-甘露吡喃糖苷衍生物,以制备2,3-二乙酰氨基-2,3-二脱氧-D-甘露糖醛酸的β-糖苷,一种细菌的稀有部分。寡糖。制备了直接的糖基供体4,6-二-O-乙酰基-2,3-二氮杂-2,3-二脱氧-α-D-甘露吡喃糖基溴化物,并在糖基化反应中测试了其合成能力。还阐述了一种间接途径:将3-叠氮基-3-脱氧-β-D-吡喃葡萄糖苷转化为β-D-甘露吡喃糖苷。顺式邻二叠氮功能成功地耐受了轻度酸性水解,三苯甲基化,琼斯氧化,TEMPO氧化,乙酰分解和TiBr(4)溴化的条件。