1H- and13C-NMR Study of Some 6,7-Dihaloquinolone Nucleosides and Their Derivatives
作者:
NajimA. Al-Masoudi,
YaseenA. Al-Soud,
Armin Geyer,
期刊:
Spectroscopy Letters
(Taylor Available online 1998)
卷期:
Volume 31,
issue 5
页码: 1031-1038
ISSN:0038-7010
年代: 1998
DOI:10.1080/00387019808003281
出版商: Taylor & Francis Group
关键词: quinolone;nucleosides;1H- and13C-NMR;2D-NMR (ROESY;HMBC;HMQC)
数据来源: Taylor
摘要:
The1H- and13C-NMR spectra of 6,7-dihalo-1,4-dihydro-4-oxo-1-(2,3,5-tri-0-benzoyl-pβ-D-ribofuranosyl)quinoline-3-carboxylic acids (3), (4), the ester (3a), 6-chloro-1-(2-deoxy-3,5-di-O-tolouyl-α- and β-D-erythropentofuranosyl)-7-fluoro-1,4-dihydro-4-oxo-quinoline-3-carboxylic acid (5), and its free a-nucleoside (5a) have been investigated. Resonance signals were assigned by homo- and heteronuclear two dimensional NMR methods (DQF-COSY, HMQC, and HMBC) for (3), (4), (5), and (5a). Ribosylation sites and anomeric configurations were identified from ROESY spectra.
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