刺叶泽米铁黏液的结构研究。

Structural investigation of Ceratozamia spinosa mucilage.

作者信息

Barone G, Corsaro M M, De Castro C, Lanzetta R, Mangoni L, Parrilli M

机构信息

Dipartimento di Chimica Organica et Biologica, Università di Napoli Federico II, Italy.

出版信息

Carbohydr Res. 1994 Jul 16;260(2):259-70. doi: 10.1016/0008-6215(94)84044-x.

DOI:10.1016/0008-6215(94)84044-x

PMID:8069875

Abstract

The polysaccharide fraction from Ceratozamia spinosa appears to be made up mainly by a chemically homogeneous polysaccharide but with a wide range of molecular weight. By NMR and chemical degradative methods, it is shown to consist essentially of a backbone of alternate-->4)-beta-D-GlcpA-(1-->and-->2)-alpha-D-Manp-(1--> units. On the 4 position of the latter, beta-D-GlcpA residues are linked. End units of alpha-L-Araf, beta-D-Xylp, alpha-L-Rhap, and alpha-L-3-OMe-Rhap are linked to C-3 and/or C-4 positions of beta-D-GlcpA residues.

摘要

来自刺叶泽米铁的多糖组分似乎主要由一种化学性质均一但分子量范围很宽的多糖组成。通过核磁共振（NMR）和化学降解方法表明，它主要由交替的→4)-β-D-葡萄糖醛酸-(1→和→2)-α-D-甘露糖-(1→单元构成主链。在后者的4位上连接着β-D-葡萄糖醛酸残基。α-L-阿拉伯糖、β-D-木糖、α-L-鼠李糖和α-L-3-甲氧基鼠李糖的末端单元连接到β-D-葡萄糖醛酸残基的C-3和/或C-4位上。