Results 121 to 130 of about 10,075 (214)

Magnetic circular dichroism in Archean atmosphere and asymmetric photolysis of biomolecules: enantiomeric excess of prebiotic sugar. [PDF]

J Biol Phys, 2020
Sharma A.
europepmc   +1 more source

EnzyKR: a chirality-aware deep learning model for predicting the outcomes of the hydrolase-catalyzed kinetic resolution. [PDF]

Chem Sci, 2023
Ran X, Jiang Y, Shao Q, Yang ZJ.
europepmc   +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, Volume 65, Issue 27, 1 July 2026.
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

Engineering a C–N Lyase for Selective Hydroaminations With Sterically Demanding Amines

ChemCatChem, Volume 18, Issue 13, 14 July 2026.
An engineered variant of ethylenediamine‐N,N’‐disuccinic acid lyase (EDDS lyase) shows a 600‐fold increase in activity toward sterically demanding bulky amines and efficiently converts large non‐native amines that are entirely unreactive with the wild‐type enzyme.
Xiaofang Gong, Laura Bothof, Pieter G. Tepper, Alejandro Prats Luján, Andy‐Mark W. H. Thunnissen, Gerrit J. Poelarends   +5 more
wiley   +1 more source

Helix Regulation of Poly(phenylacetylene)s through the Interplay between Enantiomeric Excess and Temperature-Triggered Pendant Isomerization. [PDF]

Precis Chem
Wang D, Li W, Cheng J, Xu X, Chu X, Feng Z, Sheng N, Lin L, Zhang H, Chen X, Zou G.   +10 more
europepmc   +1 more source

High Enantiomeric Excess In-Loop Synthesis of d-[methyl-¹¹C]Methionine for Use as a Diagnostic Positron Emission Tomography Radiotracer in Bacterial Infection. [PDF]

ACS Infect Dis, 2020
Stewart MN, Parker MFL, Jivan S, Luu JM, Huynh TL, Schulte B, Seo Y, Blecha JE, Villanueva-Meyer JE, Flavell RR, VanBrocklin HF, Ohliger MA, Rosenberg O, Wilson DM.   +13 more
europepmc   +1 more source

Practical Enantioselective Approach to 3‐Amino‐2‐Hydroxy Acids and Application to the Synthesis of Natural Products

Chirality, Volume 38, Issue 7, July 2026.
A practical and straightforward approach to optically active erythro 3‐amino‐2‐hydroxy acids and its application to the enantioselective synthesis of 3‐phenylisoserine and of the marine natural product 3‐amino‐2‐hydroxy‐6‐methylheptanoic acid is reported.
Marilena Caporale, Giulia Marsico, Ernesto Santoro, Patrizia Scafato, Stefano Superchi   +4 more
wiley   +1 more source

Enantioselective Crystal Growth Induced by Mesoscopic Helical Platforms

Chirality, Volume 38, Issue 7, July 2026.
Chiral silica nanohelices with controlled handedness (P or M) act as mesoscopic templates that bias the enantioselective outcome of tetraphenylethylene conglomerate crystallization, preferentially nucleating M‐ or P‐enantiomorphic crystals through interfacial chirality transfer. ABSTRACT We report enantioselective crystallization of tetraphenylethylene
Anthony Boudier, Guillaume Raffy, Emilie Pouget, Sylvain Nlate, Dario M. Bassani, Reiko Oda   +5 more
wiley   +1 more source

Determination of the Molar Fraction and Enantiomeric Excess of Electrosprayed Amino Acid Anions Employing Photoelectron Circular Dichroism. [PDF]

Anal Chem
Both JH, Beliakouskaya A, Weitzel KM.
europepmc   +1 more source

Quantitative 2D Nuclear Magnetic Resonance of Complex Mixtures: From General Analytical Homo/Heteronuclear Methods to Intrinsically Quantitative HSQC Approaches

Chemistry–Methods, Volume 6, Issue 7, July 2026.
Quantitative 2D nuclear magnetic resonance methods provide accurate individual analyte concentrations in complex mixtures. This review provides a unified description and comparison of such methods, together with an overview of applications and practical implementation tips. Quantitative 2D nuclear magnetic resonance (NMR) spectroscopy has emerged as an
Jérémy Marchand, Estelle Martineau, Jonathan Farjon, Patrick Giraudeau   +3 more
wiley   +1 more source