2-DIMENSIONAL NMR-SPECTRA OF HYDROLYZABLE TANNINS WHICH FORM EQUILIBRIUM MIXTURES

被引：6
|
作者：
YOSHIDA, T [1 ]
HATANO, T [1 ]
OKUDA, T [1 ]
机构：
[1] OKAYAMA UNIV, FAC PHARMACEUT SCI, OKAYAMA 700, JAPAN
来源：
MAGNETIC RESONANCE IN CHEMISTRY | 1992年 / 30卷
关键词：
TANNIN; ANOMER; HYDROLYZABLE TANNIN; OLIGOMERIC HYDROYSABLE TANNIN; HETERONUCLEAR LONG-RANGE COSY; OENOTHEIN-B; CAMELLIATANNIN-H; CORIARIIN-H; EUPHORBIN-C;
D O I：
10.1002/mrc.1260301311
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
The structures of hydrolysable tannins, each existing as an equilibrium mixture due to tautomerization at the sugar core(s) or at the dehydrohexahydroxydiphenoyl group (five- and six-membered hemiacetal forms) in the molecule, were elucidated by NMR, employing 2D NMR techniques (COSY, NOESY, H-1-C-13 long-range COSY, etc.), on derivatives which avoid the spectral complication due to equilibration.
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页码：S46 / S55
页数：10
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