Analysis of the linkage positions in d-fructofuranosyl residues by the reductive-cleavage method
作者:David Rolf、Gary R. Gray
DOI:10.1016/0008-6215(84)85399-9
日期:1984.8
The suitability of the reductive-cleavage method for analysis of the linkage positions in D-fructofuranosyl residues of D-fructans was examined by using sucrose, chicory-root inulin, and Aerobacter levanicum levan as models. Permethylation, and reductive cleavage with triethylsilane in the presence of either boron trifluoride etherate or trimethylsilyl trifluoromethanesulfonate, gave the expected methylated
通过使用蔗糖,菊苣根菊粉和左旋杆菌(Aerobacter levanicum levan)作为模型,研究了还原裂解法对D-果聚糖D-果糖呋喃糖基残基中的连接位置进行分析的适用性。在三氟化硼醚化物或三甲基甲硅烷基三氟甲磺酸盐的存在下,进行全甲基化和三乙基硅烷的还原裂解,得到预期的2,5-脱水-D-甘露糖醇和2,5-脱水-D-葡萄糖醇的甲基化衍生物。无论使用哪种催化剂,在O-1处连接的非还原性(末端)D-果呋喃糖基和D-果呋喃糖基残基均以甘露聚糖构型为主要产物,而在O-6和O-1处均连接的D-果呋喃糖基残基为主要产物。和O-6,得到具有葡萄糖构型的衍生物作为主要产物。独立合成,与nMR