Results 31 to 40 of about 779,586 (254)

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

open access: yesChinese 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   +3 more
doaj   +1 more source

Combined experimental and computational 1H NMR study of water adsorption onto graphenic materials

open access: yesJournal 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   +5 more
doaj   +1 more source

1H-NMR based lipid profiling of Gossypium hirsutum seed oil at different developmental stages

open access: yesCurrent Research in Green and Sustainable Chemistry, 2021
1H-NMR spectroscopy is emerging as powerful robust analytical technique in analyzing bio constituents present in plants. It offers non-invasive method for identification and quantification of several Phyto-constitutes in a single step without much pre ...
Nikita J. Kurkuri   +3 more
doaj   +1 more source

Intra- and inter-metabolite correlation spectroscopy of tomato metabolomics data obtained by liquid chromatography-mass spectrometry and nuclear magnetic resonance [PDF]

open access: yes, 2008
Nuclear magnetic resonance (NMR) and liquid chromatography-mass spectrometry (LCMS) are frequently used as technological platforms for metabolomics applications.
de Vos, C.H.   +5 more
core   +1 more source

NMR Characterization of Flavanone Naringenin 7-O-Glycoside Diastereomer

open access: yesChinese Journal of Magnetic Resonance, 2017
To discriminate R and S flavanone glycoside using NMR, the mixture of R and S naringenin 7-O-glycoside was first isolated from Gleditsia sinensis. 1H and 13C NMR data of the mixture were recorded with 1H NMR, 13C NMR, 1H-1H COSY, 1H-13C HSQC and 1H-13C ...
SUN Li-juan   +5 more
doaj   +1 more source

Microwave-Assisted Regioselective Synthesis and 2D-NMR Studies of New 1,2,3-Triazole Compounds Derived from Acridone

open access: yesJournal of Chemistry, 2021
A simple and mild protocol towards the synthesis of new 1,2,3-triazole compounds derived from acridone has been developed via regiospecific 1,3-dipolar cycloaddition reaction between 10-(prop-2-yn-1-yl)acridone derivatives and aromatic azides using CuI ...
Mohammed Aarjane   +3 more
doaj   +1 more source

Invisible but not inaccessible—Revealing transient oligomers formed by intrinsically disordered proteins with solution NMR and complementary methods

open access: yesFEBS Letters, EarlyView.
Transient oligomers formed by intrinsically disordered proteins may be ‘invisible’ to direct detection yet remain accessible to solution NMR through equilibrium‐exchange measurements and pressure‐jump experiments. Complementary methods report on mass, stoichiometry, selected distance distributions, morphology, and internal packing.
Martin D. Gelenter, Ad Bax
wiley   +1 more source

Spectral Analysis of Glucose-Based Chiral N-heterocyclic Carbene Precursors

open access: yesChinese Journal of Magnetic Resonance, 2018
1-(2,3,4,6-tetra-O-acetyl-β-D-glucopyranosyl)-3-butylimidazolium bromide (compound 2) was synthesized with 1-bromobutane and 1-(2,3,4,6-tetra-O-acetyl-β-D-glucopyranosyl) imidazole (compound 1), which is a glucose-derived chiral N-heterocyclic carbene ...
ZHOU Zhong-gao   +4 more
doaj   +1 more source

A novel quinazolinone insulin receptor inhibitor and its synergy with an EGFR inhibitor in glucose‐driven glioblastoma

open access: yesMolecular Oncology, EarlyView.
The novel styrylquinazolinone‐based molecule W1B effectively suppresses glioblastoma by inhibiting IGF1R and EGFR. In high‐glucose microenvironments driving tumor resistance, W1B acts synergistically with the EGFR inhibitor dacomitinib. This combination safely blocks compensatory survival signaling in zebrafish xenograft models. Showcasing promising in
Patryk Rurka   +9 more
wiley   +1 more source

Structural Elucidation of Hybutimibe

open access: yesChinese Journal of Magnetic Resonance
The structure of hybutimibe was analyzed by ultraviolet absorption spectroscopy, infrared absorption spectroscopy, mass spectrometry, nuclear magnetic resonance (1H NMR, 13C NMR, DEPT, 1H-1H COSY, 1H-1H NOESY, 1H-13C HSQC and 1H-13C HMBC) spectroscopy ...
XU Xiaojie   +6 more
doaj   +1 more source

Home - About - Disclaimer - Privacy