NMR OF ANTHOCYANINS - ASSIGNMENTS AND EFFECTS OF EXCHANGING AROMATIC PROTONS

Authors
PEDERSEN AT ANDERSEN OM AKSNES DW NERDAL W
Citation
At. Pedersen et al., NMR OF ANTHOCYANINS - ASSIGNMENTS AND EFFECTS OF EXCHANGING AROMATIC PROTONS, Magnetic resonance in chemistry, 31(11), 1993, pp. 972-976
Citations number
16
Categorie Soggetti
Spectroscopy,Chemistry
Journal title
Magnetic resonance in chemistry → ACNP
ISSN journal
07491581
Volume
31
Issue
11
Year of publication
1993
Pages
972 - 976
Database
ISI
SICI code
0749-1581(1993)31:11<972:NOA-AA>2.0.ZU;2-6
Abstract
Pelargonidin-3-O-beta-glucopyranoside was isolated from an acidified m ethanolic extract of frozen strawberries, purified by several chromato graphical techniques and subjected to homo- and heteronuclear proton a nd carbon NR IR analysis, including selective decoupling, DQF-COSY, NO ESY, SEFT, HMQC and HMBC. Several strategies for the unambiguous assig nment of the aglycone H-6 and H-8 resonances are discussed. Secondary isotope effects and different deuterium exchange rates of the protons were found.