Synthesis of oxidized methyl 4-O-methyl-β-d-glucopyranoside and methyl β-d-glucopyranosyl-(1→4)-β-d-glucopyranoside derivatives as substrates for fluorescence labeling reactions
作者:Jürgen Röhrling、Antje Potthast、Thomas Lange、Thomas Rosenau、Immanuel Adorjan、Andreas Hofinger、Paul Kosma
DOI:10.1016/s0008-6215(02)00048-4
日期:2002.4
3-diketo groups. Cellobiose and oxidized monosaccharides were then labeled with the carbonyl-selective fluorescence marker 9-(7-amino-1,4,7-trioxaheptyl)-9 H -carbazolecarboxamide (CCOA). The labeled derivatives serve as model compounds for the determination of minute amounts of carbonyl groups in cellulosic polysaccharides.
摘要合成纤维素模型合成了甲基4-O-甲基-β-d-吡喃葡萄糖苷和甲基4-O-甲基-β-d-吡喃葡萄糖苷-(1→4)-β-d-吡喃葡萄糖苷及相关的6-O-保护的化合物分别使用Swern条件或溴/双(三丁基锡)氧化物以高至中等收率氧化中间体,得到含有6-醛基,3-酮基和2,3-二酮基的化合物。然后,用羰基选择性荧光标记9-(7-氨基-1,4,7-三氧杂庚基)-9 H-咔唑羧酰胺(CCOA)标记纤维二糖和氧化的单糖。标记的衍生物用作模型化合物,用于测定纤维素多糖中的微量羰基。