Results 21 to 30 of about 1,079,697 (312)

Structural Elucidation and NMR Spectral Assignments of Two C19-Diterpenoid Alkaloids

Chinese Journal of Magnetic Resonance, 2018
Two C19-diterpenoid alkaloids, homochasmanine (compound 1) and 14-debenzoylfranchetine (compound 2), were isolated from the roots of Aconitum handelianum. Their structures were elucidated by one-dimensional and two-dimensional nuclear magnetic resonance (
YIN Tian-peng, CHEN Yang, LUO Ping, CAL Le, DING Zhong-tao   +4 more
doaj   +1 more source

Quantitative Lipoprotein Subclass and Low Molecular Weight Metabolite Analysis in Human Serum and Plasma by 1H NMR Spectroscopy in a Multilaboratory Trial.

Analytical Chemistry, 2018
We report an extensive 600 MHz NMR trial of quantitative lipoprotein and small-molecule measurements in human blood serum and plasma. Five centers with eleven 600 MHz NMR spectrometers were used to analyze 98 samples including 20 quality controls (QCs ...
B. Jiménez, E. Holmes, C. Heude, R. Tolson, Nikita Harvey, S. Lodge, Andrew J Chetwynd, C. Cannet, Fang Fang, Jake T. M. Pearce, M. Lewis, M. Viant, J. Lindon, M. Spraul, H. Schäfer, J. Nicholson   +15 more
semanticscholar   +1 more source

An NMR Study of N-isobutyryl-3'-O-(1-fluoro-1,1,3,3-tetraisopropyl-1,3-disiloxane-3-yl)-2'-benzyloxycarbonyl-guanosine

Chinese Journal of Magnetic Resonance, 2019
The nucleoside derivative N-isobutyryl-3'-O-(1-fluoro-1,1,3,3-tetraisopropyl-1,3-disiloxane-3-yl)-2'-benzyloxy carbonyl-guanosine (compound 1) was obtained by selectively cleaving the 1,1,3,3-tetraisopropyldisiloxanyl protecting group at 5'-position with
WEI Hui-qiang, YU Jiang, BI Chang-fen, NING Hong-xin, LI Yi-liang, LIU Qiang   +5 more
doaj   +1 more source

1H-Detected Biomolecular NMR under Fast Magic-Angle Spinning

Chemical Reviews, 2022
Since the first pioneering studies on small deuterated peptides dating more than 20 years ago, 1H detection has evolved into the most efficient approach for investigation of biomolecular structure, dynamics, and interactions by solid-state NMR.
T. Le Marchand, T. Schubeis, Marta Bonaccorsi, P. Paluch, D. Lalli, A. J. Pell, L. Andreas, K. Jaudzems, J. Staněk, G. Pintacuda   +9 more
semanticscholar   +1 more source

Rapid Identification of Novel Psychoactive and Other Controlled Substances Using Low-Field 1H NMR Spectroscopy

ACS Omega, 2019
An automated approach to the collection of 1H NMR (nuclear magnetic resonance) spectra using a benchtop NMR spectrometer and the subsequent analysis, processing, and elucidation of components present in seized drug samples are reported.
Lysbeth H. Antonides, Rachel M. Brignall, Andrew Costello, Andrew Costello, Jamie R. Ellison, Jamie R. Ellison, Samuel E. Firth, Nicolas Gilbert, Bethany J. Groom, S. J. Hudson, Matthew C. Hulme, J. Marron, Zoe A. Pullen, Thomas B R Robertson, Christopher J. Schofield, Christopher J. Schofield, D. Williamson, E. K. Kemsley, Oliver B. Sutcliffe, R. Mewis   +19 more
semanticscholar   +1 more source

Spectral data of nicotabaflavonoidglycoside

Data in Brief, 2018
The dataset addressed in this article relates to the research article entitled“Nicotabaflavonoidglycoside, the first example of cembranoid and flavonoid heterodimer from Nicotiana tabacum” (Yang et al., 2018) [1]. The dataset presents the MS4(879-571-421-
Cai-Yan Yang, Yao Lin, Hui-Xiong Yuan, Wen-Pei Yang, Xian Wei, Zu-Liang Huang   +5 more
doaj   +1 more source

Developing and Standardizing a Protocol for Quantitative Proton Nuclear Magnetic Resonance (1H NMR) Spectroscopy of Saliva

Journal of Proteome Research, 2018
Metabolic profiling by 1H NMR spectroscopy is an underutilized technology in salivary research, although preliminary studies have identified promising results in multiple fields (diagnostics, nutrition, sports physiology).
Alexander Gardner, H. Parkes, G. Carpenter, P. So   +3 more
semanticscholar   +1 more source

THEORETICAL AND SPECTROSCOPIC STUDIES OF 1-(MORPHOLINE-4-YL-METHYL)-3-BENZYL-4-(4-ISOPROPYL-BENZYLIDENAMINO)-4,5-DIHYDRO-1H-1,2,4-TRIAZOL-5-ONE MOLECULE

Journal of the Turkish Chemical Society, Section A: Chemistry, 2016
In this study, 1-(morpholine-4-yl-methyl)-3-benzyl-4-(4-isopropylbenzylidenamino)-4,5-dihydro-1H-1,2,4-triazol-5-one (1) was synthesized by the reaction of compound 3-benzyl-4-(4-isopropylbenzylidenamino)-4,5-dihydro-1H-1,2,4-triazol-5-one with ...
Gül KOTAN, Haydar Yüksek
doaj   +1 more source

Structural Identification and Complete NMR Spectral Assignments of 4-Isopropoxy-1-(trifluoroacetyl)naphthalene

Chinese Journal of Magnetic Resonance
In this paper, one-dimensional (1H NMR, 13C NMR, DEPT, and 19F NMR) and two-dimensional NMR (1H-1H COSY, 1H-13C HMBC, and 1H-13C HSQC) techniques were applied to perform structural identification and NMR spectral assignments of the fluorine-containing ...
ZHENG Jiaqi, WANG Yinong, YUAN Siwen, YIN Tianpeng   +3 more
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Combined experimental and computational 1H NMR study of water adsorption onto graphenic materials

Journal of Magnetic Resonance Open, 2023
The effects caused by the interaction with graphene-like layers on the 1H NMR spectra of water molecules adsorbed onto porous carbon materials were investigated by a combination of shielding calculations using density functional theory (DFT) and 1H NMR ...
Alan R. Ambrozio, Thierry R. Lopes, Daniel F. Cipriano, Fábio A.L. de Souza, Wanderlã L. Scopel, Jair C.C. Freitas   +5 more
doaj   +1 more source