p-Trifluoroacetamidophenyl O-α-d-mannopyranosyl-(1→3)-O-[α-d-mannopyranosyl-(1→6)]-β-d-mannopyranoside
作者:Göran Ekborg、Cornelis P.J. Glaudemans
DOI:10.1016/0008-6215(85)85024-2
日期:1985.10
p-Nitrophenyl 2-O-benzyl-4,5-O-cyclohexylidene-beta-D-mannopyranoside (4) was condensed with tetra-O-benzoyl-alpha-D-mannopyranosyl bromide. The resulting, protected disaccharide was converted into p-nitrophenyl O-(2,3,4-tri-O-benzoyl-alpha-D-mannopyranosyl)-(1----3)-4-O-benzoyl-2-O- benzyl-beta-D-mannopyranoside (8), which was condensed with tetra-O-benzoyl-alpha-D-mannopyranosyl bromide to give p-nitrophenyl
将对-硝基苯基2-O-苄基-4,5-O-环己叉基-β-D-甘露吡喃糖苷(4)与四-O-苯甲酰基-α-D-甘露吡喃糖基溴缩合。将得到的受保护的二糖转化为对硝基苯基O-(2,3,4-三-O-苯甲酰基-α-D-甘露吡喃糖基)-(1 ---- 3)-4-O-苯甲酰基-2-将O-苄基-β-D-甘露吡喃糖苷(8)与四-O-苯甲酰基-α-D-甘露吡喃糖基溴缩合得到对硝基苯基O-(2,3,4-三-O-苯甲酰基-α -D-甘露吡喃糖基)-(1 ---- 3)-O-[2,3,4-三-O-苯甲酰基-α-D-甘露吡喃糖基-(1 ---- 6)]-4-O-苯甲酰基-2-O-苄基-β-D-甘露吡喃糖苷(9),产率为75%。对硝基苯基的转化,然后脱保护,得到标题化合物,其结构通过1H-和13C-nmr光谱法确认。