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Complete assignments of (1)H and (13)C NMR spectral data for 7,7 `-dihydroarylnaphthalene lignan lactones
(JOHN WILEY & SONS LTD, 2009)
In this article we present a complete (1)H and (13)C NMR spectral analysis of three 7,7`-dihydroarylnaphthalene lignan lactones using modern NMR techniques such as COSY, HSQC, HMBC and NOE experiments. Complete assignment ...
Complete assignment of the H-1 and C-13 NMR spectra of 2-phenyl-3H-naphtho[2,1-b][1,4]oxazin-3-one, 2-p-methoxyphenylnaphtho[1,2-d]oxazole and 2-phenylnaphtho[1,2-d]oxazole. Concerted use of one- and two-dimensional NMR techniques
(JOHN WILEY & SONS LTD, 1998-06)
The H-1 and C-13 NMR spectra of 2-phenyl-3H-naphtho[2,1-b][1,4]oxazin-3-one, 2-p-methoxyphenylnaphtho[1,2-d]oxazole and 2-phenylnaphtho[1,2-d]oxazole were totally assigned using a combination of one-and two-dimensional NMR ...
Teaching NMR spectra analysis with nmr.cheminfo.org
Teaching spectra analysis and structure elucidation requires students to get trained on real problems. This involves solving exercises of increasing complexity and when necessary using computational tools. Although desktop ...
Plant Metabolomics Using NMR Spectroscopy
(2019-01-01)
The major goal in plant metabolomics is to study complex extracts for the purposes of metabolic exploration and natural products discovery. To achieve this goal, plant metabolomics relies on accurate and selective acquisition ...
Structural elucidation of a new sesquiterpene alcohol by comparative NMR Studies
(ACG Publications, 2020)
DOSY NMR applied to analysis of flavonoid glycosides from Bidens sulphurea
(JOHN WILEY & SONS LTD, 2009)
2D DOSY (1)H NMR has proved to be a useful technique in the identification of the molecular skeleton of the four major compounds of ethyl acetate extract of aerial parts of Bidens sulphurea (Asteraceae). The combination ...
Indole alkaloids from Rauvolfia bahiensis ADC. (Apocynaceae)
(Pergamon-elsevier Science LtdOxfordInglaterra, 2002)
Computational Chemistry to the Rescue: Modern Toolboxes for the Assignment of Complex Molecules by GIAO NMR Calculations
(Wiley VCH Verlag, 2016-06)
The calculations of NMR properties of molecules using quantum chemical methods have deeply impacted several branches of organic chemistry. They are particularly important in structural or stereochemical assignments of ...
Complete assignment of the 13C NMR spectra of a series of 5,8-disubstituted 4,4-dimethylanthracene-1,9,10(4h)-triones
(1999)
The regiosomeric quinones 5-acetyloxymethyl-4,4,8-trimethyl-(5) and 8-acetyloxymethyl-4,4,5-trimethylanthracene-1,9,10(4H)-trione (6) were synthesized and their regiochemistry was assigned on the basis of the unambiguous ...
Complete 1H and 13C NMR spectral assignment of hydrogenated oxoisoaporphine derivatives
(2003)
2,3,8,9,10,11-Hexahydro-7H-dibenzo[de,h]quinolin-7-one, 5-methoxy-2,3,8,9,10,11-hexahydro-7H-dibenzo[de,h] quinolin-7-one, 5-methoxy-6-hydroxy-1,2,3,7a,8,9,10,11, 11a,11b-decahydro-7H-dibenzo[de,h]quinolin-7-one, ...