Combined1H,13C and11B NMR and mass spectral assignments of boronate complexes ofD-(+)-glucose,D-(+)-mannose, methyl-?-D-glucopyranoside, methyl-?-D-galactopyranoside and methyl-?-D-mannopyranoside
作者:Reem Smoum、Abraham Rubinstein、Morris Srebnik
DOI:10.1002/mrc.1301
日期:2003.12
Complex formation between N‐butylboronic acid and D‐(+)‐glucose, D‐(+)‐mannose, methyl‐α‐D‐glucopyranoside, methyl‐β‐D‐galactopyranoside and methyl α‐D‐mannopyranoside under neutral conditions was investigated by 1H, 13C and 11B NMR spectroscopy and gas chromatography–mass spectrometry (GC–MS) D‐(+)‐Glucose and D‐(+)‐mannose formed complexes where the boronates are attached to the 1,2:4,6‐ and 2,3:5
N-丁基硼酸与 D-(+)-葡萄糖、D-(+)-甘露糖、甲基-α-D-吡喃葡萄糖苷、甲基-β-D-吡喃半乳糖苷和甲基α-D-吡喃甘露糖苷在中性条件下形成复合物通过 1H、13C 和 11B NMR 光谱和气相色谱-质谱法 (GC-MS) 研究 D-(+)-葡萄糖和 D-(+)-甘露糖形成的复合物,其中硼酸盐与 1,2:4 相连,呋喃糖形式分别为 6 位和 2,3:5,6 位。另一方面,硼酸与葡萄糖和半乳糖的两个甲基衍生物的 4,6 位结合。甲基 α-D-吡喃甘露糖苷在 2,3:4,6 位结合两个硼酸酯。11B NMR 用于显示复合糖和硼酸盐的环大小。GC-MS 确认了分配。版权所有 © 2003 John Wiley & Sons, Ltd.