Regio- and stereoselective alkylation of a pyrrolidinic system: Structural and conformational studies by high field NMR techniques

1982 ◽  
Vol 19 (2) ◽  
pp. 108-111 ◽  
Author(s):  
M. Schaefer ◽  
P. Faller ◽  
D. Nicole
Keyword(s):  
High Field ◽  
Conformational Studies ◽  
Nmr Techniques

High-Field NMR and Circular Dichroism Solvent-Dependent Conformational Studies of the Bradykinin C-Terminal Tetrapeptide Ser-Pro-Phe-Arg

1988 ◽  
Vol 6 (3) ◽  
pp. 609-625 ◽  
Author(s):  
Albin Otter ◽  
Paul G. Scott ◽  
John R. Cann ◽  
Raymond J. Vavrek ◽  
John M. Stewart ◽  
...  
Keyword(s):  
Circular Dichroism ◽  
High Field ◽  
Conformational Studies ◽  
Circular Dichroïsm

Fe(CO)3 and Rh(acac) complexes of ergosteryl and 7-dehydrocholesteryl acetates: A high field nuclear magnetic resonance study

1988 ◽  
Vol 66 (12) ◽  
pp. 3003-3011 ◽  
Author(s):  
Richard E. Perkier ◽  
Michael J. Mcglinchey
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
High Field ◽  
Chemical Shifts ◽  
Nuclear Magnetic Resonance Study ◽  
Two Dimensional ◽  
Magnetic Resonance Study ◽  
Anisotropic Properties ◽  
Diene System ◽  
Nmr Techniques

The 500 MHz 1H and 125 MHz 13C spectra of ergosteryl and 7-dehydrocholesteryl acetate were recorded in C6D6 and CDCl3 and assigned using two-dimensional NMR techniques. It is shown that incorporation of an Fe(CO)3 or a Rh(acac) moiety onto the ring B diene system affects the chemical shifts of neighbouring protons and carbons. These changes are discussed in terms of the anisotropic properties of the organometallic fragments.

Intermediate length scale organisation in tin borophosphate glasses: new insights from high field correlation NMR

2015 ◽  
Vol 17 (44) ◽  
pp. 29531-29540 ◽  
Author(s):  
G. Tricot ◽  
A. Saitoh ◽  
H. Takebe
Keyword(s):  
High Field ◽  
Glass System ◽  
Length Scale ◽  
Borophosphate Glasses ◽  
System P ◽  
Nmr Techniques ◽  
Field Correlation

11B/31P correlation NMR techniques have been used to identify the mixed borophosphate units in the 67SnO–xB2O3–(33 − x)P2O5 glass system.

scholarly journals Progress in Low Field Benchtop NMR Spectroscopy in Chemical and Biochemical Analysis

2019 ◽  
Author(s):  
Martin Grootveld ◽  
Benita Percival ◽  
Miles Gibson ◽  
Yasan Osman ◽  
Mark Edgar ◽  
...  
Keyword(s):  
Nmr Spectroscopy ◽  
Magnetic Resonance ◽  
High Field ◽  
Biochemical Analysis ◽  
Disease Monitoring ◽  
Analytical Strategy ◽  
Low Field ◽  
Recent Advances ◽  
The Future ◽  
Nmr Techniques

The employment of spectroscopically-resolved NMR techniques as analytical probes have previously been both prohibitively expensive and logistically challenging in view of the large sizes of high-field facilities. However, with recent advances in the miniaturisation of magnetic resonance technology, low-field, cryogen-free “benchtop” NMR instruments are seeing wider use. Indeed, these miniaturised spectrometers are utilised in areas ranging from food and agricultural analyses through to human biofluid assays and disease monitoring. Therefore, it is both intrinsically timely and important to highlight current applications of this analytical strategy, and also provide an outlook for the future, where this approach may be applied to a wider range of analytical problems, both qualitatively and quantitatively<br>

P–O–B3 linkages in borophosphate glasses evidenced by high field 11B/31P correlation NMR

2015 ◽  
Vol 51 (45) ◽  
pp. 9284-9286 ◽  
Author(s):  
G. Tricot ◽  
B. Raguenet ◽  
G. Silly ◽  
M. Ribes ◽  
A. Pradel ◽  
...  
Keyword(s):  
High Field ◽  
Borophosphate Glasses ◽  
Nmr Techniques

The presence of P–O–B3 linkages in borophosphate glasses has been evidenced by high field scalar NMR techniques.

The Conformational Analysis of Substance P Analogs Using High-Field NMR Techniques

1986 ◽  
Vol 3 (4) ◽  
pp. 795-803 ◽  
Author(s):  
Hideko Kawaki ◽  
Albin Otter ◽  
Helmut Beierbeck ◽  
George Kotovych ◽  
John M. Stewart
Keyword(s):  
Substance P ◽  
Conformational Analysis ◽  
High Field ◽  
Nmr Techniques ◽  
Substance P Analogs

scholarly journals Synthesis, structural and conformational study of selected N-substituted phthalimides

2005 ◽  
Vol 3 (4) ◽  
pp. 683-704 ◽  
Author(s):  
Isabel Iriepa ◽  
F. Javier Villasante ◽  
Enrique Gálvez ◽  
Antonio Herrera ◽  
Angel Sánchez ◽  
...  
Keyword(s):  
Double Resonance ◽  
13C Nmr Spectroscopy ◽  
Two Dimensional ◽  
X Ray Diffraction ◽  
1H And 13C Nmr ◽  
Conformational Studies ◽  
One Dimensional ◽  
X Ray ◽  
Nmr Techniques ◽  
New Compounds

AbstractThis paper synthesizes N-substituted phthalimides derived from nitrogen heterocycles as potential 5-HT4 ligands by using the Mitsunobu reaction. Conformational studies of some of the new compounds have been conducted using 1H and 13C-NMR spectroscopy. Proton and carbon resonances were achieved through the application of one-dimensional selective NOE, two-dimensional NMR techniques-homonuclear COSY-45, NOESY and heteronuclear 1H-13C HMQC correlated spectroscopy- and double resonance experiments. The crystal structure of compound 1 was determined by X-ray diffraction.

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