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Comprehensive conformational study of key interactions involved in zearalenone complexation with beta-D-glucans.
The beta-D-glucans from the cell wall of Saccharomyces cerevisiae have shown in vitro affinity for zearalenone. For this reason, their utilization as dietary adsorbent, to reduce the bioavailability… Expand
ENANTIOMERIC ANALYSIS IN A POLYPEPTIDE LYOTROPIC LIQUID CRYSTAL BY DEUTERIUM NMR
Observation of Enantiomers, Chiral by Virtue of Isotopic Substitution, through Deuterium NMR in a Polypeptide Liquid Crystal
New, and accurate method to determine the enantiomeric purity of amino acids based on deuterium NMR in a cholesteric lyotropic liquid crystal
Synthetic Approaches to Spiroaminals
The 1-oxa-7-azaspiro[5.5]undecane, 1-oxa-6-azaspiro[4.5]decane, 1-oxa-7-azaspiro[5.4]decane and 1-oxa-6-azaspiro[4.4]nonane ring systems are found as the cores of natural or synthetic products that… Expand
Determination of absolute configurations of amines and amino acids using nonchiral derivatizing agents (NCDA) and deuterium NMR.
- P. Chalard, M. Bertrand, I. Canet, V. Théry, R. Remuson, G. Jeminet
- Medicine, Chemistry
- Organic letters
- 6 July 2000
Enantiomeric analysis and empirical determination of the absolute configuration of amines and amino acids can be easily performed using acetyl-d(3) chloride as a nonchiral derivatizing agent… Expand
Enantiomeric Analysis in a Polypeptide Lyotropic Liquid Crystal by Deuterium NMR.
Enantioselective synthesis of (−)-indolizidine 167B
Abstract The enantioselective total synthesis of (−)-indolizidine 167B is described. The key step is the intramolecular cyclization of the chiral N -acyliminium ion 6 . Indolizidine 167B was obtained… Expand
Visualization of enantiomers through deuterium NMR in cholesterics. Optimization of the chiral liquid crystal solvent
Abstract Thermotropic cholesteric liquid crystals made of mixtures of cholesteric esters and of a Δχ <0 nematic (ZLI2806) may be used as NMR solvents to visualize enantiomers. Proton decoupled… Expand
Acetyl-d(3) Chloride: A Convenient Nonchiral Derivatizing Agent (NCDA) for a Facile Enantiomeric Excess Determination of Amines through Deuterium NMR.
- J. Canet, I. Canet, J. Courtieu, S. Da Silva, J. Gelas, Y. Troin
- Chemistry, Medicine
- The Journal of organic chemistry
- 13 December 1996
Different methods have been proposed for the determination of the enantiomeric purity of chiral amines by NMR.1 These methods are mainly based on the use of chiral auxiliaries which react with… Expand