Heteronuclear Single-Quantum Coherence Nuclear Magnetic Resonance (HSQC NMR) Characterization of Acetylated Fir (Abies sachallnensis MAST) Wood Regenerated from Ionic Liquid

2011 ◽  
Vol 59 (10) ◽  
pp. 5382-5389 ◽  
Author(s):  
Chen Qu ◽  
Takao Kishimoto ◽  
Masanori Kishino ◽  
Masahiro Hamada ◽  
Noriyuki Nakajima
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Ionic Liquid ◽  
Magnetic Resonance ◽  
Quantum Coherence ◽  
Heteronuclear Single Quantum Coherence ◽  
Single Quantum ◽  
Nmr Characterization ◽  
Nuclear Magnetic

scholarly journals Establishing lignin structure-upgradeability relationships using quantitative 1H–13C heteronuclear single quantum coherence nuclear magnetic resonance (HSQC-NMR) spectroscopy

2019 ◽  
Vol 10 (35) ◽  
pp. 8135-8142 ◽  
Author(s):  
Masoud Talebi Amiri ◽  
Stefania Bertella ◽  
Ydna M. Questell-Santiago ◽  
Jeremy S. Luterbacher
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Nmr Spectroscopy ◽  
Magnetic Resonance ◽  
Quantum Coherence ◽  
Heteronuclear Single Quantum Coherence ◽  
Single Quantum ◽  
Nmr Method ◽  
Nuclear Magnetic ◽  
Lignin Structure

By using a quantitative HSQC-NMR method to measure chemical functionalities within the structure of isolated lignin samples, lignin's upgradability can be very precisely predicted.

scholarly journals N-[7-Chloro-4-[4-(phenoxymethyl)-1H-1,2,3-triazol-1-yl] quinoline]-acetamide

Molbank ◽  
10.3390/m1213 ◽  
2021 ◽  
Vol 2021 (2) ◽  
pp. M1213
Author(s):  
Paolo Coghi ◽  
Jerome P. L. Ng ◽  
Ali Adnan Nasim ◽  
Vincent Kam Wai Wong
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Quantum Coherence ◽  
Biologically Active ◽  
Proton Nuclear Magnetic Resonance ◽  
Dipolar Cycloaddition ◽  
Heteronuclear Single Quantum Coherence ◽  
Pharmacokinetic Properties ◽  
Nuclear Magnetic

The 1,2,3-triazole is a well-known biologically active pharmacophore constructed by the copper-catalyzed azide–alkyne cycloaddition. We herein reported the synthesis of 4-amino-7-chloro-based [1,2,3]-triazole hybrids via Cu(I)-catalyzed Huisgen 1,3-dipolar cycloaddition of 4-azido-7-chloroquinoline with an alkyne derivative of acetaminophen. The compound was fully characterized by Fourier-transform infrared (FTIR), proton nuclear magnetic resonance (1H-NMR), carbon-13 nuclear magnetic resonance (13C-NMR), heteronuclear single quantum coherence (HSQC), ultraviolet (UV) and high-resolution mass spectroscopies (HRMS). This compound was screened in vitro with different normal and cancer cell lines. The drug likeness of the compound was also investigated by predicting its pharmacokinetic properties.

scholarly journals Synthesis and characterization of new impurities in obeticholic acid

2019 ◽  
Vol 43 (11-12) ◽  
pp. 522-530
Author(s):  
Wei-Dong Feng ◽  
Song-Ming Zhuo ◽  
Fu-Li Zhang
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Quantum Coherence ◽  
High Resolution Mass Spectrometry ◽  
Multiple Bond ◽  
Protecting Group ◽  
Obeticholic Acid ◽  
Overhauser Effect ◽  
Nuclear Magnetic

Novel and efficient synthetic strategies are developed for the first synthesis of two new impurities found in obeticholic acid. The synthetic routes to the impurities are designed without column purification using 4-nitrobenzoyl chloride as a selective protecting group. The impurities, which are obtained in good yields and high purity, are identified and characterized using high-resolution mass spectrometry, Fourier transform infrared, one-dimensional nuclear magnetic resonance (1H, 13C, distortionless enhancement by polarization transfer), and two-dimensional nuclear magnetic resonance (Correlated Spectroscopy, heteronuclear single quantum coherence, heteronuclear multiple bond correlation, and rotating-frame Overhauser effect spectroscopy) techniques.

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