Synthesis of 2-(4-aminophenyl)ethyl 3-deoxy-5-O-(3,4,6-tri-O-β-d-glucopyranosyl-α-d-glucopyranosyl)-α-d-manno-oct-2-ulopyranosidonic acid, a highly branched pentasaccharide corresponding to structures found in lipopolysaccharides from Moraxella catarrhalis
作者:Kerstin Ekelöf、Stefan Oscarson
DOI:10.1016/0008-6215(95)00269-3
日期:1995.12
Syntheses of the pentasaccharide 2-(4-aminophenyl)ethyl 3-deoxy-5-O-(3,4,6- tri-O-beta-D-glucopyranosyl-alpha-D-glucopyranosyl)-alpha-D-manno-oct-2- ulopyranosidonic acid and of the tetrasaccharide 3,4,6-tri-O-beta-D-glucopyranosyl-alpha-D-glucopyranoside, both as its methyl and 2-(4-trifluoro-acetamidophenyl)ethyl glycoside, are described. These oligosaccharides correspond to structures found in the lipopolysaccharide
五糖2-(4-氨基苯基)乙基3-脱氧-5-O-(3,4,6-三-O-β-D-吡喃葡萄糖基-α-D-吡喃葡萄糖基)-α-D-甘露聚糖的合成oct-2- ulyryranosidonic acid和四糖3,4,6-tri-O-β-D-吡喃葡萄糖基-α-D-吡喃葡萄糖苷,分别是其甲基和2-(4-三氟-乙酰氨基苯基)乙基糖苷描述。这些寡糖对应于卡他莫拉氏菌的脂多糖中发现的结构,是旨在产生针对细菌的抗体的生物学实验所需要的。发现将吡喃葡萄糖基引入支链目标化合物的3位,4位和6位的最佳方法是一步反应,使用3,4,6-三醇作为受体,而2,3, 4,6-四-O-苯甲酰基-D-吡喃葡萄糖基溴化物作为三氟甲磺酸银促进的偶联剂中的供体。