Results 141 to 150 of about 48,679 (293)

Recent Progress in Detecting Enantiomers in Food

The analysis of enantiomers in food has significant implications for food safety and human health. Conventional analytical methods employed for enantiomer analysis, such as gas chromatography and high-performance liquid chromatography, are characterized ...
Changlong Hao
core   +1 more source

Asymmetric α‐Alkylation With Activated and Unactivated Electrophiles by a Highly Productive and Recyclable Lewis Acid/Imidazolium Catalyst

Angewandte Chemie International Edition, EarlyView.
An air‐stable, easily prepared, bifunctional Cu(II)/imidazolium complex enables highly enantioselective α‐alkylation of 1,3‐dicarbonyls with outstanding productivity (TON up to 1740). Highlights include broad electrophile scope spanning π‐activated and nonactivated reagents, stereo‐retentive allylation, simple catalyst synthesis, and efficient catalyst
Johanna Haußmann, Alexander Beck, Dominik Hornung, Michael Mistele, Alexander Allgaier, Wolfgang Frey, Joris van Slageren, Johannes Kästner, René Peters   +8 more
wiley   +1 more source

A Ruthenium‐(Ph‐BPE) Catalyst for Asymmetric Alkynylation of Fluoral: Enantioselection From 1 of 12 Fluxional Stereogenic‐at‐Ruthenium Complexes

Angewandte Chemie International Edition, EarlyView.
The first enantioselective alkynylations of aqueous fluoral are described. These processes are catalyzed by an iodide‐bound ruthenium‐(Ph‐BPE)‐catalyst; an octahedral metal complex that can exist as 12 diastereomeric‐at‐metal isomers. Calculations reveal that 2 of 12 stereoisomeric complexes account for 99.9% of the Boltzmann population and that ...
Weijia Shen, Sebastian Höthker, Colin E. Hayter, Nicholas K. Bowers, Andrea Pellegrini, Stefan Grimme, Michael J. Krische   +6 more
wiley   +1 more source

The Oxidation Mechanisms of Saturated Fatty Acids: Formation of Hydroperoxide Isomers and Production of 2‐Alkanones and Lactones

Journal of the American Oil Chemists' Society, EarlyView.
ABSTRACT Saturated fatty acids (SFAs) are generally regarded simply as being resistant to oxidation compared with unsaturated fatty acids. However, it has long been reported that SFAs can undergo oxidation when heated at high temperatures, leading to the formation of unique degradation products such as 2‐alkanones and lactones.
Kanji Aoyagi, Shunji Kato, Kiyotaka Nakagawa   +2 more
wiley   +1 more source

CHEM 220, Chapter 5: Enantiomers

, 2016
A discussion of the physical properties of enantiomers and how they can be distinguished both by biological systems and using ...
Garber, Katie
core  

Quantum Phenomena in Molecular and Biological Systems: A Decoherence‐Based Decision Framework With Falsifiable Predictions and a Failure‐Mode Taxonomy

Advanced Physics Research, EarlyView.
A physics‐grounded framework based on decoherence timescales (τ_dec vs τ_func), Markovian validity, and falsifiability criteria is applied across molecular systems to distinguish where quantum effects are necessary, marginal, or irrelevant. The analysis integrates quantum chemistry, biological quantum mechanisms, and quantum computing under a unified ...
Sarfaraz K. Niazi
wiley   +1 more source

Predicting enantiomer migration order of levobunolol via sequential computational modeling. [PDF]

J Mol Model
Maia PP, Freitas RMD, Guimarães L, Nascimento CS.   +3 more
europepmc   +1 more source

Pharmacokinetics and pharmacodynamics of intravenous and oral (S)‐ketamine: Investigating metabolite contribution to subjective effects

British Journal of Clinical Pharmacology, EarlyView.
Aims Oral administration of (S)‐ketamine for treatment‐resistant depression (TRD), as alternative to the registered intranasal or off‐label intravenous administrations, has high potential. However, it is characterized by an extensive first‐pass metabolism, resulting in low (S)‐ketamine exposure and high levels of active metabolites, including (S ...
Marije E. Otto, Gabriël E. Jacobs, Joost C. van Mechelen, Laura G. J. M. Borghans, Johan G. C. van Hasselt, Linda B. S. Aulin   +5 more
wiley   +1 more source

Close-Shell and Biradical Enantiomers for Probing the Chiral-Induced Spin Selectivity Effect. [PDF]

J Phys Chem Lett
Mamontov A, Goldberg D, De Leener G, Luhmer M, Andotra A, Pandey P, Maini L, Dellemme D, Surin M, Gatsios C, Koch N, Kuliashov O, Yochelis S, Paltiel Y, Geerts YH.   +14 more
europepmc   +1 more source

HLA genotype testing for carbamazepine, oxcarbazepine and eslicarbazepine: A guideline developed by the UK Centre of Excellence in Regulatory Science and Innovation in Pharmacogenomics (CERSI‐PGx)

British Journal of Clinical Pharmacology, EarlyView.
Carbamazepine is licensed in the United Kingdom for the treatment of epilepsy, bipolar disorder and trigeminal neuralgia. The related compounds oxcarbazepine and eslicarbazepine are licensed for the treatment of epilepsy. These drugs can cause immune‐mediated hypersensitivity reactions, which typically affect the skin, and can be of variable severity ...
Lucy Galloway, Cinzia Dello Russo, Nicholas Bass, Elvira Bramon, Helen Cross, Natalie Curley, Sarah Curran, Helen Davies, Jana De Villiers, William Evans, Bernhard Frank, Alice Groves, Judith Hayward, Jon Higham, Dyfrig A. Hughes, Shwe Sin Kyaw, Anthony G. Marson, Ailsa McLellan, Seth Mensah, Francis O'Neill, Jane Sargison, Sanjay M. Sisodiya, Jill Swan, Joanna M. Zakrewska, Munir Pirmohamed   +24 more
wiley   +1 more source