Results 41 to 50 of about 509,407 (311)

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

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

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

NMR characterization of animals’ follicular fluids [PDF]

open access: yes, 2013
Follicular Fluid (FF) provides a special environment to the oocyte during its maturation in vivo. The FF is derived from the sanguineous plasma and secretions, synthesised in the follicle wall that contain a large variety of metabolites (1).
Ariu, Federica   +6 more
core  

Insights into DNA platination within unusual structural settings [PDF]

open access: yes, 2011
2D [1H, 15N] HSQC NMR spectroscopy has been used to monitor reaction and product formation between [Pt(15NH3)2I2] and nucleic acids possessing irregular topologies and containing site specific phosphorothioate substitution in the phosphodiester backbone.
Harvie, Stephanie   +2 more
core   +2 more sources

Biological 1H NMR spectroscopy

open access: yesComparative Biochemistry and Physiology Part B: Comparative Biochemistry, 1988
Proton nuclear magnetic resonance spectroscopy (1H NMR) is a powerful analytical method used to identify and quantitate chemical compounds. In recent years, it has been used to study rates of metabolism in microbes, isolated perfused tissues, intact animals, and human beings.
openaire   +2 more sources

MnI‐Functionalized Covalent Organic Framework as Efficient Electrocatalyst for CO2 Reduction in a Catholyte‐Free Zero‐Gap Electrolyzer

open access: yesAdvanced Functional Materials, EarlyView.
This work demonstrates the successful integration of a phenanthroline‐based 2D COF with MnI catalytic sites into a catholyte‐free membrane‐electrode‐assembly cell for CO2 electroreduction. The crystalline COF actively suppresses Mn⁰–Mn⁰ dimerization, achieving a turnover frequency of 617 h⁻¹ at 2.8 V (full‐cell potential), and enabling stable operation.
Laura Spies   +8 more
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

Efficient and Mild Microwave-Assisted Stepwise Functionalization of Naphthalenediimide with α-Amino Acids [PDF]

open access: yes, 2006
Microwave dielectric heating proved to be an efficient method for the one-pot and stepwise syntheses of symmetrical and unsymmetrical naphthalenediimide derivatives of α-amino acids.
Otto, Sijbren,   +3 more
core   +4 more sources

Combined use of 1H-NMR and GC-MS for metabolite monitoring and in vivo 1H-NMR assignments

open access: yesBiochimica et Biophysica Acta (BBA) - General Subjects, 1986
Thirty-three metabolites were observed in perchloric acid extracts of four different tissues by in vitro 1H-NMR, GC-MS and alcohol dehydrogenase assay, and the information was used to interpret an in vivo two-dimensional nuclear Overhauser effect 1H-NMR spectrum.
T W, Fan   +3 more
openaire   +2 more sources

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