León de Pinto G, Martínez M, Rivas C
Centro de Investigaciones en Química de los Productos Naturales, Facultad de Humanidades y Educación, Universidad del Zulia, Maracaibo, Venezuela.
Carbohydr Res. 1994 Jul 4;260(1):17-25. doi: 10.1016/0008-6215(94)80018-9.
The structure of the polysaccharide from Cercidium praecox (R&P) Harms gum exudate has been studied by Smith degradation, by sugar and methylation analyses, and by 13C NMR spectroscopy. The results showed a (1-->4)-xylan core. Some xylose residues are substituted at O-2 by alpha-D-glucuronic acid and 4-O-methyl-alpha-D-glucuronic acid residues. beta-D-Glucuronic acid is present, probably as terminal residues. The arabinose is present as alpha-L-furanose and beta-L-pyranose.
通过史密斯降解法、糖分析、甲基化分析以及13C核磁共振光谱法，对刺木豆（R&P）哈姆斯树胶渗出物中的多糖结构进行了研究。结果显示其核心为（1→4）-木聚糖。一些木糖残基在O-2位被α-D-葡萄糖醛酸和4-O-甲基-α-D-葡萄糖醛酸残基取代。存在β-D-葡萄糖醛酸，可能作为末端残基。阿拉伯糖以α-L-呋喃糖和β-L-吡喃糖的形式存在。
