Ring-opening polymerization of 1,4-anhydro-3-O-benzyl-2-O-acyl-α-D-xylopyranose and synthesis of stereoregular (1→5)-β-D-xylofuranan

被引：4

作者：

Hori, M ^{[1
]}

Nakatsubo, F ^{[1
]}

机构：

[1] Kyoto Univ, Grad Sch Agr, Div Forest & Biomat Sci, Sakyo Ku, Kyoto 6068502, Japan

来源：

MACROMOLECULES | 1998年 / 31卷 / 21期

关键词：

D O I：

10.1021/ma980880q

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Ring-opening polymerizations of both 1,4-anhydro-3-O-benzyl-2-O-pivaloyl- (1) and 1,4-anhydro-3-O-benzyl-2-O-acetyl-alpha-D-xylopyranose (2) gave their respective (1-->5)-beta-D-xylofuranan derivatives. Subsequent removal of the protective groups gave stereoregular (1--5)-beta-D-xylofuranan for the first time. Polymerization of monomer 1 by PF5 gave 3-O-benzyl-2-O-pivaloyl-(1-->5)-beta-D-xylofuranan with [alpha](d)(25) -87.4 degrees and a number-average molecular weight of 16.9 x 10(3) (DPn = 55). Polymerization of monomer 2 by PF5 gave 3-O-benzyl-2-O-acetyl-(1-->5)-beta-D-xylofuranan with [alpha](D)(25) -121.1 degrees and a number-average molecular weight of 6.4 x 10(3) (DPn = 24). Removal of the acyl and benzyl groups gave nonnatural new stereoregular polysaccharide (1-->5)-beta-D-xylofuranan.

引用

页码：7195 / 7198

页数：4

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