Synthesis of an octasaccharide fragment of high-mannose-type glycans of glycoproteins
作者:Tomoo Nukada、Tohru Kitajima、Yoshiaki Nakahara、Tomoya Ogawa
DOI:10.1016/s0008-6215(00)90557-3
日期:1992.4
l)-(1----6)-O-(beta-D-mannopyranosyl)-(1----4)-O-( 2- acetamido-2-deoxy-beta-D-glucopyranosyl)-(1----4)-2-acetamido-2-deoxy- glucopyranose, an octasaccharide fragment of high-mannose type glycan of glycoproteins, was synthesized. Crucial glycosylation of trisaccharide intermediate, benzyl O-(2,4-di-O-benzyl-beta-D-mannopyranosyl)-(1----4)-O-(2-acetamido-3,6-di -O- benzyl-2-deoxy-beta-D-glucopyrano
O-(α-D-甘露吡喃糖基)-(1 ---- 2)-O-(α-D-甘露吡喃糖基)-(1 ---- 3)-O-[(α-D-甘露吡喃糖基)-( 1 ---- 2)-O-(α-D-甘露吡喃糖基)-(1 ---- 6)]-O-(α-D-甘露酰吡喃糖基)-(1 ---- 6)-O-( β-D-甘露吡喃糖基)-(1 ---- 4)-O-(2-乙酰氨基-2-脱氧-β-D-吡喃吡喃糖基)-(1 ---- 4)-2-乙酰氨基-2-脱氧-合成了吡喃葡萄糖,糖蛋白的高甘露糖型聚糖的八糖片段。三糖中间体的关键糖基化,苄基O-(2,4-二-O-苄基-β-D-甘露吡喃糖基)-(1 ---- 4)-O-(2-乙酰氨基-3,6-二-O -苄基-2-脱氧-β-D-吡喃葡萄糖基)-(1 ---- 4)-2-乙酰氨基-3,6-二-O-苯甲酰基-2-脱氧-β-D-吡喃葡糖苷成功仅与二-O-乙酰基十四烷基-O-苄基-D-甘露糖醛酰