Mass spectrometric and nuclear magnetic resonance confirmation of a 3,3-spirocyclic indole derivative formed from melatonin and related acyl tryptamines

1977 ◽  
Vol 4 (4) ◽  
pp. 232-236 ◽  
Author(s):  
Karl Blau ◽  
Graham S. King ◽  
Merton Sandler
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Indole Derivative ◽  
Mass Spectrometric ◽  
Nuclear Magnetic

Carbon-13 nuclear magnetic resonance spectrometric and gas chromatography/mass spectrometric characterization of lipids in corn suspension cells

1985 ◽  
Vol 57 (3) ◽  
pp. 710-715 ◽  
Author(s):  
Dennis James. Ashworth ◽  
Douglas Owen. Adams ◽  
Benjamin Yunwen. Giang ◽  
Michael Tung Hai. Cheng ◽  
Rino Yul. Lee
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Gas Chromatography ◽  
Magnetic Resonance ◽  
Mass Spectrometric ◽  
Suspension Cells ◽  
Nuclear Magnetic

Biosynthesis of Gibberellins in Gibberella fujikuroi. Gibberellin A16

1973 ◽  
Vol 51 (11) ◽  
pp. 1470-1474 ◽  
Author(s):  
A. G. McInnes ◽  
D. G. Smith ◽  
G. P. Arsenault ◽  
L. C. Vining
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Mass Spectrometric ◽  
Gibberella Fujikuroi ◽  
Mass Spectrometric Evidence ◽  
Nuclear Magnetic

A metabolite isolated from cultures of Gibberella fujikuroi has been deduced from infrared, nuclear magnetic resonance, and mass spectrometric evidence to be the hitherto undescribed gibberellin A16. Cultures supplemented with gibberellin A4-14C yielded radioactive gibberellin A16, whereas those to which gibberellin A7-14C were added yielded unlabeled product. Thus gibberellin A16 is probably formed by direct C-1 hydroxylation of gibberellin A4.

scholarly journals A New Arylnaphthalide Lignan From Oxalis corniculata

2019 ◽  
Vol 14 (9) ◽  
pp. 1934578X1987588
Author(s):  
Bao Zhang ◽  
Li Jiang ◽  
Xue Ma ◽  
Ai-Min Wang ◽  
Ting Liu ◽  
...  
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Chemical Structure ◽  
Mass Spectrometric ◽  
Mass Spectrometric Analysis ◽  
Spectrometric Analysis ◽  
Etoh Extract ◽  
Nuclear Magnetic

A new arylnaphthalide lignan, corniculin (1), was isolated from 75% EtOH extract of Oxalis corniculata. Its chemical structure was determined by mass spectrometric analysis as well as 1D and 2D nuclear magnetic resonance (NMR).

Cyclic phosphines and arsines. II. Cyclic arsines

1970 ◽  
Vol 23 (8) ◽  
pp. 1559 ◽  
Author(s):  
PS Elmes ◽  
S Middleton ◽  
BO West
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Electron Impact ◽  
Systematic Study ◽  
Variable Temperature ◽  
Mass Spectrometric ◽  
Ionization Potentials ◽  
Methyl Ethyl ◽  
Mass Spectrometric Techniques ◽  
Nuclear Magnetic

The constitutions of the cyclopolyarsines (AsR)n (R = methyl, ethyl, n-propyl, and phenyl) have been investigated by nuclear magnetic resonance and mass spectrometric techniques. A systematic study of their fragmentation under electron impact at different ionization potentials has confirmed the presence of pentameric alkyl and hexameric phenyl cyclic arsines. Variable temperature N.M.R. spectra obtained for pentamethylcyclopentaarsine have been interpreted in terms of a rapid pseudorotation process. Some mixed methylphenyl cyclic arsines have been identified.

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