scholarly journals Curcinomarcoide, a Novel Limonoid From Trichilia hirta (Meliaceae)—Complete 1H and 13C Chemical Shift Assignments

2019 ◽  
Vol 14 (5) ◽  
pp. 1934578X1984361
Author(s):  
Milena G. Curcino Vieira ◽  
Raimundo Braz Filho ◽  
Ivo. J. Curcino Vieira
Keyword(s):  
Mass Spectrometry ◽  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Chemical Shift ◽  
Spectral Data ◽  
Chemical Shift Assignments ◽  
13C Chemical Shift ◽  
Nuclear Magnetic

A novel limonoid named curcinomarcoide (1) was isolated from Trichilia hirta and characterized on the basis of its nuclear magnetic resonance and mass spectrometry spectral data and comparison with literature data.

Eine ungewöhnliche intramolekulare Photoreaktion eines Hexachlorhexahydromethanonaphthalins / An Unusual Intramolecular Photoreaction of a Hexachlorohexahydromethanonaphthaline

1978 ◽  
Vol 33 (12) ◽  
pp. 1563-1564
Author(s):  
H. Parlar
Keyword(s):  
Mass Spectrometry ◽  
Nuclear Magnetic Resonance ◽  
Infrared Spectroscopy ◽  
Magnetic Resonance ◽  
Spectral Data ◽  
Column Chromatography ◽  
Nuclear Magnetic

Photoreactions of 2-exo-bromo-5,6,7,8,9,9- hexachloro-1,2,4 a, 5,8,8 a-hexahydro-5,8-methanonaphthaline (1) were studied in the presence of acetophenone. With the help of column chromatography an unusual isomerisation product (3) was isolated, whose structure was established by spectral data obtained by mass spectrometry, infrared spectroscopy, and 1H nuclear magnetic resonance measurements.

Friedel–Crafts alkylation of benzene with 1,1-d2-1-chloropropane

1970 ◽  
Vol 48 (5) ◽  
pp. 858-862 ◽  
Author(s):  
C. C. Lee ◽  
D. J. Woodcock
Keyword(s):  
Mass Spectrometry ◽  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Spectral Data ◽  
Reaction Medium ◽  
Side Chain ◽  
Mass Spectral Data ◽  
Mass Spectral ◽  
Alkylation Of Benzene ◽  
Nuclear Magnetic

The AlCl3 catalyzed reaction of 1,1-d2-1-chloropropane with benzene was carried out in excess benzene at about 5° or in 1,2,4-trichlorobenzene as solvent at 0°. The products, n-propylbenzene and isopropylbenzene, were examined by nuclear magnetic resonance and mass spectrometry. The results indicated only very minor amounts of isotope position scrambling in the propyl side chain, suggesting no major involvement of protonated cyclopropane intermediates in the reaction. The mass spectral data, however, demonstrated that the products are quite labile in the reaction medium, with extensive intermolecular hydride and deuteride transfers taking place.

Boron-11 nuclear magnetic resonance chemical shift assignments for monohalogenated decaborane(14) isomers

1974 ◽  
Vol 96 (14) ◽  
pp. 4404-4410 ◽  
Author(s):  
Richard F. Sprecher ◽  
Brian E. Aufderheide ◽  
George W. Luther ◽  
James C. Carter
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Chemical Shift ◽  
Chemical Shift Assignments ◽  
Nuclear Magnetic

scholarly journals Determining isoleucine side-chain rotamer-sampling in proteins from 13C chemical shift

2019 ◽  
Vol 55 (94) ◽  
pp. 14107-14110
Author(s):  
Lucas Siemons ◽  
Boran Uluca-Yazgi ◽  
Ruth B. Pritchard ◽  
Stephen McCarthy ◽  
Henrike Heise ◽  
...  
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Chemical Shift ◽  
Chemical Shifts ◽  
Side Chain ◽  
Conformational Sampling ◽  
Side Chains ◽  
13C Chemical Shift ◽  
Nuclear Magnetic

A framework is presented to derive the conformational sampling of isoleucine side chains from nuclear magnetic resonance 13C chemical shifts.

ChemInform Abstract: BORON-11 NUCLEAR MAGNETIC RESONANCE CHEMICAL SHIFT ASSIGNMENTS FOR MONOHALOGENATED DECABORANE(14) ISOMERS

1974 ◽  
Vol 5 (39) ◽  
pp. no-no
Author(s):  
RICHARD F. SPRECHER ◽  
BRIAN E. AUFDERHEIDE ◽  
GEORGE W. III LUTHER ◽  
JAMES C. CARTER
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Chemical Shift ◽  
Chemical Shift Assignments ◽  
Nuclear Magnetic
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