Results 81 to 90 of about 667,303 (272)

Generation of amine dehydrogenases with increased catalytic performance and substrate scope from ε-deaminating L-Lysine dehydrogenase

Nature Communications, 2019
Amine dehydrogenases (AmDHs) catalyse the conversion of ketones into amines. Here, the authors created AmDH variants, the best of which showing a substrate-dependent stereo-switchable selectivity, affording either S- or R-configured amine products with ...
Vasilis Tseliou, Tanja Knaus, Marcelo F. Masman, Maria L. Corrado, Francesco G. Mutti   +4 more
doaj   +1 more source

Chiral and Molecular Recognition through Protonation between Aromatic Amino Acids and Tripeptides Probed by Collision-Activated Dissociation in the Gas Phase

Molecules, 2018
Chiral and molecular recognition through protonation was investigated through the collision-activated dissociation (CAD) of protonated noncovalent complexes of aromatic amino acid enantiomers with l-alanine- and l-serine-containing tripeptides using a ...
Akimasa Fujihara, Hikaru Inoue, Masanobu Sogi, Michiko Tajiri, Yoshinao Wada   +4 more
doaj   +1 more source

Exploring the World of Double Nanohoops

Angewandte Chemie International Edition, EarlyView.
As two conjugated nanohoops covalently linked by a central unit, double nanohoops are a relatively new class of strained nanocarbons with different properties to single nanohoops. This review gives an overview of all reported double nanohoops, categorizing their structures, syntheses, and discussing properties and applications. Creativity and synthetic
Luisa Rzesny, Philipp Seitz, Birgit Esser   +2 more
wiley   +1 more source

Dynamic induction of enantiomeric excess from a prochiral azobenzene dimer under circularly polarized light

Chemical Science, 2014
We demonstrate the simultaneous induction of chirality and enantiomeric excess from a prochiral azobenzene dimer via a chiral regioisomer formed in situ upon CPL irradiation.
K. Rijeesh, P. K. Hashim, S. Noro, N. Tamaoki   +3 more
semanticscholar   +1 more source

Biotransformations of Substituted Phenylethanols and Acetophenones by Environmental Bacteria

Food Technology and Biotechnology, 2008
Whole cells of hydrocarbon-degrading bacteria, isolated from polluted sediments in the Santos Estuary (Baixada Santista, São Paulo, Brazil), were able to catalyse oxidoreduction reactions with various substituted phenylethanols and acetophenones as ...
Edna Kagohara, Vivian Helena Pellizari, João Valdir Comasseto, Leandro Helgueira Andrade, André Luiz Meleiro Porto   +4 more
doaj  

Click chemistry enables quantitative chiroptical sensing of chiral compounds in protic media and complex mixtures

Nature Communications, 2018
Chiroptical sensing in complex mixtures remains a challenging task. Here, the authors report an efficient coumarin probe for chiroptical click chirality sensing of absolute configuration, concentration and enantiomeric excess of several compound classes.
F. Yushra Thanzeel, Kaluvu Balaraman, Christian Wolf   +2 more
doaj   +1 more source

Intermolecular Enantioselective Nickel‐Catalyzed Arylation of Un‐Activated C(sp3)─H Bond

Angewandte Chemie International Edition, EarlyView.
Ni: a new solution for asymmetric C(sp3)─H activation. The stereoselective synthesis of all‐carbon quaternary stereogenic centres is achieved via enantioselective C(sp3)─H arylation using a Ni‐BINOL‐derived catalyst. Rational catalytic cycle design uncovers a new reaction pathway that can efficiently induce chiral information during the stereoselective
Erwan Brunard, Fengjie Huang, Àlex Díaz‐Jiménez, Sofiya Kostiukovska, Joanna Wencel‐Delord   +4 more
wiley   +1 more source

Synthesis of Tertiary and Quaternary Amine Derivatives from Wood Resin as Chiral NMR Solvating Agents

Molecules, 2015
Chiral tertiary and quaternary amine solvating agents for NMR spectroscopy were synthesized from the wood resin derivative (+)-dehydroabietylamine (2). The resolution of enantiomers of model compounds [Mosher’s acid (3) and its n-Bu4N salt (4)] (guests ...
Tiina Laaksonen, Sami Heikkinen, Kristiina Wähälä   +2 more
doaj   +1 more source

Rapid Enantiomeric Excess Measurements of Enantioisotopomers by Molecular Rotational Resonance Spectroscopy. [PDF]

Org Process Res Dev, 2023
Sonstrom RE, Vang ZP, Scolati HN, Neill JL, Pate BH, Clark JR.   +5 more
europepmc   +1 more source

Valorization of fishing industry by‐products for biodiesel production: Unlocking the potential of residual fish oil

Biofuels, Bioproducts and Biorefining, EarlyView.
Abstract Fishing waste and its by‐products, whether naturally occurring or generated by the processing industry, represent a significant opportunity for producing high‐value products. These often discarded or underutilized residues can be converted into various valuable products through advanced processing technologies. Among the potential products are
Patrick da Silva Sousa, Francisco Simão Neto, Paulo Gonçalves de Sousa Junior, Francisco Izaias da Silva Aires, Calebe da Rocha Silva, Kaiany Moreira dos Santos, Viviane de Castro Bizerra, Maria Alexsandra Sousa Rios, José Cleiton Sousa dos Santos   +8 more
wiley   +1 more source