A C-13-NMR STUDY OF THE TUNGSTATE AND MOLYBDATE COMPLEXES OF PERSEITOL, GALACTITOL, AND D-MANNITOL

被引：21

作者：

CHAPELLE, S ^{[1
]}

VERCHERE, JF ^{[1
]}

机构：

[1] UNIV ROUEN HAUTE NORMANDIE,FAC SCI,CNRS,URA 500,F-76134 MT ST AIGNAN,FRANCE

来源：

CARBOHYDRATE RESEARCH | 1991年 / 211卷 / 02期

关键词：

D O I：

10.1016/0008-6215(91)80097-7

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

Perseitol (D-glycero-D-galacto-heptitol) forms dinuclear complexes with tungstate that have a stability higher than those of galactitol and D-mannitol, and all of the formation constants are three orders of magnitude higher than those for molybdate. The C-13-n.m.r. data showed that the tungstate and molybdate complexes had similar structures that involved four vicinal hydroxyl groups. The sites of chelation involved the galacto group in galactitol and perseitol, and the arabino group HO-3,4,5 and HO-6 in D-mannitol. D-Mannitol and perseitol formed pairs of isomeric complexes that involved the same site of chelation but in reversed orientations.

引用

页码：279 / 286

页数：8

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