NMR OF ANTHOCYANINS - ASSIGNMENTS AND EFFECTS OF EXCHANGING AROMATIC PROTONS

被引:26
作者
PEDERSEN, AT
ANDERSEN, OM
AKSNES, DW
NERDAL, W
机构
[1] Department of Chemistry, University of Bergen, Bergen, N-5007
关键词
PELARGONIDIN-3-O-BETA-GLUCOPYRANOSIDE; H-1 NMR AND C-13 NMR; 2D CORRELATION SPECTROSCOPY; DEUTERIUM EXCHANGE;
D O I
10.1002/mrc.1260311104
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Pelargonidin-3-O-beta-glucopyranoside was isolated from an acidified methanolic extract of frozen strawberries, purified by several chromatographical techniques and subjected to homo- and heteronuclear proton and carbon NR IR analysis, including selective decoupling, DQF-COSY, NOESY, SEFT, HMQC and HMBC. Several strategies for the unambiguous assignment of the aglycone H-6 and H-8 resonances are discussed. Secondary isotope effects and different deuterium exchange rates of the protons were found.
引用
收藏
页码:972 / 976
页数:5
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