$NMR assignments and single-crystal X-ray diffraction analysis of deoxyloganic acid$

NMR assignments and single-crystal X-ray diffraction analysis of deoxyloganic acid

7‐Deoxyloganic acid (1), citrusin C (2), 3,4‐dihydroxyl benzoic acid (3) and (E)‐caffeic acid (4) were isolated from the water‐soluble fraction of ethanol extracts of Morina nepalensis var. alba Hand.‐Mazz. and their structures were determined on the basis of spectroscopic evidence. The total assign...

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Veröffentlicht in:	Magnetic resonance in chemistry 2005-01, Vol.43 (1), p.92-96
Hauptverfasser:	Teng, Rong Wei, Wang, De Zu, Wu, Yun Shan, Lu, Yang, Zheng, Qi Tai, Yang, Chong Ren
Format:	Artikel
Sprache:	eng
Schlagworte:	(E)-caffeic acid 13C NMR 1H NMR 3,4‐dihydroxyl benzoic acid 4-dihydroxyl benzoic acid 7-deoxyloganic acid citrusin C Iridoids - chemistry Magnetic Resonance Spectroscopy - methods Models, Molecular Molecular Conformation Morina Morina nepalensis var. alba Hand.-Mazz NMR X-ray diffraction X-Ray Diffraction - methods
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Zusammenfassung:	7‐Deoxyloganic acid (1), citrusin C (2), 3,4‐dihydroxyl benzoic acid (3) and (E)‐caffeic acid (4) were isolated from the water‐soluble fraction of ethanol extracts of Morina nepalensis var. alba Hand.‐Mazz. and their structures were determined on the basis of spectroscopic evidence. The total assignments of 1H and 13C NMR spectra of 1 in solvents CD3OD, D2O and CDCl3 were reported, in addition to the single‐crystal X‐ray diffraction analysis of its tetraacetate 1a. All compounds were obtained from Morina genus for the first time. Copyright © 2004 John Wiley & Sons, Ltd.
ISSN:	0749-1581 1097-458X
DOI:	10.1002/mrc.1502