CHEMISTRY OF ETHYL 2-METHYL-4-OXO-Δ2-PYRROLINE-3-CARBOXYLATE AND RELATED COMPOUNDS

1964 ◽  
Vol 42 (7) ◽  
pp. 1524-1529 ◽  
Author(s):  
R. S. Atkinson ◽  
E. Bullock
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Strong Acid ◽  
Alternative Route ◽  
Methyl Derivative ◽  
Oxidizing Agents ◽  
Related Compounds ◽  
Nuclear Magnetic

Ethyl 2-methyl-4-oxo-Δ2-pyrroline-3-carboxylate (Ia) is oxidized by one-electron oxidizing agents to a colored dimer which has been synthesized by an alternative route. Acetylation of (Ia) and its N-methyl derivative (Ib) gives a variety of products some of which show unusual infrared absorptions. The products of dimerization of (Ia) and (Ib) in strong acid show nuclear magnetic resonance absorptions at variance with previously claimed structures and alternatives are suggested.

Determination of the conformation of nicotine and some related compounds by nuclear magnetic resonance and dipole moments

1967 ◽  
Vol 56 (6) ◽  
pp. 708-713 ◽  
Author(s):  
Thomas R. Simpson ◽  
J.Cymerman Craig ◽  
W.D. Kumler
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Dipole Moments ◽  
Related Compounds ◽  
Nuclear Magnetic

LYCOPODIUM ALKALOIDS: IV. THE CONSTITUTION AND STEREOCHEMISTRY OF LYCOCLAVINE, AN ALKALOID OF LYCOPODIUM CLAVATUM VAR. MEGASTACHYON

1962 ◽  
Vol 40 (11) ◽  
pp. 2088-2100 ◽  
Author(s):  
W. A. Ayer ◽  
D. A. Law
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Lycopodium Clavatum ◽  
Nuclear Magnetic Resonance Spectra ◽  
Lycopodium Alkaloids ◽  
Related Compounds ◽  
Magnetic Resonance Spectra ◽  
Nuclear Magnetic

The alkaloids of Lycopodium clavatum var. megastachyon have been examined and two hitherto unreported alkaloids, lycoclavine and acetyllycoclavine, were isolated and their structures determined. The nuclear magnetic resonance spectra of these and related compounds are discussed in terms of the conformation of ring B in these alkaloids.

Self-Consistent Field–Molecular Orbital (SCF–MO) Calculations and Nuclear Magnetic Resonance Measurements for Fosfomycin and Related Compounds

1987 ◽  
Vol 76 (9) ◽  
pp. 753-756 ◽  
Author(s):  
Yves G. Smeyers ◽  
A. Hernández Laguna ◽  
F.J. Romero-Sánchez ◽  
M. Fernández-Ibañez ◽  
E. Galvez-Ruano ◽  
...  
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Molecular Orbital ◽  
Mo Calculations ◽  
Consistent Field ◽  
Self Consistent ◽  
Self Consistent Field ◽  
Related Compounds ◽  
Nuclear Magnetic
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