Results 11 to 20 of about 415,539 (315)

Spectral Analyses of a Novel Ibuprofen-Phillygenin Ester

open access: yesChinese Journal of Magnetic Resonance, 2018
An ibuprofen-phillygenin ester was synthesized through the Schotten-Baumann reaction with ibuprofen and phillygenin as the starting materials. Ultraviolet absorption (UV) spectrum, infrared absorption (IR) spectrum, matrix-assisted laser desorption ...
FAN Hong-yu
doaj   +1 more source

Spectral Analysis and Structural Elucidation of Luliconazole

open access: yesChinese Journal of Magnetic Resonance, 2018
Infrared spectra, ultraviolet spectra, nuclear magnetic resonance (NMR) spectra (i.e., 1H NMR, 13C NMR, DEPT135, 1H-1H COSY, 1H-13C HMQC and 1H-13C HMBC) and mass spectra of luliconazole were collected and used to characterize the compound.
LIN Yun-liang   +3 more
doaj   +1 more source

A Versatile Ligand Platform that Supports Lewis Acid Promoted Migratory Insertion [PDF]

open access: yes, 2012
A helping hand: Incorporation of Group 2 Lewis acids into a macrocycle appended to a phosphine ligand attached to a rhenium carbonyl complex promotes otherwise unfavorable transformations of coordinated CO (see scheme; M=Ca, Sr).
Bercaw, John E.   +2 more
core   +1 more source

Spectroscopic Studies of Delafloxacin Meglumine

open access: yesChinese Journal of Magnetic Resonance, 2021
The structure of delafloxacin meglumine was analyzed by infrared absorption (IR), ultraviolet absorption (UV), nuclear magnetic resonance (1H NMR, 13C NMR, DEPT, 1H-1H COSY, 1H-13C HSQC and 1H-13C HMBC) spectroscopy, mass spectrometry and elemental ...
Xin-yi ZHAO   +4 more
doaj   +1 more source

Analyzing Pentaerythritol Stearate Homologs with NMR Spectroscopy

open access: yesChinese Journal of Magnetic Resonance, 2018
A pentaerythritol stearate sample with unknown composition was analyzed by nuclear magnetic resonance (NMR) spectroscopy (i.e., 1H NMR, quantitative 13C NMR, DEPT135, 1H-1H COSY, 1H-1H NOESY, 1H-13C HSQC and 1H-13C HMBC).
LI Chun-fa   +3 more
doaj   +1 more source

Spectral Analyses and Structural Elucidation of Cyflumetofen

open access: yesChinese Journal of Magnetic Resonance, 2020
Cyflumetofen is a new type of acaricide with high efficiency and low residue. In this work, the compound was characterized by infrared absorption (IR), ultraviolet absorption (UV) and mass spectrometry, as well as nuclear magnetic resonance spectroscopy (
ZHANG Yi-ming   +2 more
doaj   +1 more source

Structure and Reactivity of Half-Sandwich Rh(+3) and Ir(+3) Carbene Complexes. Catalytic Metathesis of Azobenzene Derivatives [PDF]

open access: yes, 2018
Traditional rhodium carbene chemistry relies on the controlled decomposition of diazo derivatives with [Rh2(OAc)4] or related dinuclear Rh(+2) complexes, whereas the use of other rhodium sources is much less developed.
Farès, C.   +5 more
core   +1 more source

Antitumor studies. Part 4: Design, synthesis, antitumor activity, and molecular docking study of novel 2-substituted 2-deoxoflavin-5-oxides, 2-deoxoalloxazine-5-oxides, and their 5-deaza analogs [PDF]

open access: yes, 2008
Various novel 10-alkyl-2-deoxo-2-methylthioflavin-5-oxides and their 2-alkylamino derivatives were prepared by facile nitrosative cyclization of 6-(N-alkylanilino)-2-methylthiopyrimidin-4(3H)-ones followed by nucleophilic replacement of the 2-methylthio ...
Ali, Hamed I.   +2 more
core   +1 more source

900MHz 1H-/13C-NMR analysis of 2-hydroxyglutarate and other brain metabolites in human brain tumor tissue extracts. [PDF]

open access: yesPLoS ONE, 2018
PURPOSE:To perform in vitro high-resolution 900 MHz magnetic resonance spectroscopy (NMR) analysis of human brain tumor tissue extracts and analyze for the oncometabolite 2-hydroxyglutarate (2HG) and other brain metabolites, not only for 1H but also for ...
Gregory Hyung Jin Park   +2 more
doaj   +1 more source

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

open access: yesChinese 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   +4 more
doaj   +1 more source

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