Results 1 to 10 of about 12,077 (148)

A Comparative Study of C2-Symmetric and C1-Symmetric Hydroxamic Acids in Vanadium-Catalyzed Asymmetric Epoxidation of Allylic Alcohols [PDF]

open access: yesMolecules
Hydroxamic acids are emerging as versatile chiral ligands for metal-catalyzed asymmetric oxidations due to their tunable electronic and steric environments.
Marco Valtierra-Galván   +6 more
doaj   +2 more sources

Enantioselective protonation [PDF]

open access: yesNature Chemistry, 2009
Enantioselective protonation is a common process in biosynthetic sequences. The decarboxylase and esterase enzymes that effect this valuable transformation are able to control both the steric environment around the proton acceptor (typically an enolate) and the proton donor (typically a thiol).
Mohr, Justin T.   +2 more
openaire   +3 more sources

Supramolecular Chiral Nanozymes with High and Switchable Enantioselectivity

open access: yesSmall Structures, 2023
Understanding and manipulation of catalytic enantioselectivity have emerged as a paramount challenge for decades. Inspired by nature, nanozymes with enantioselectivity have been designed.
Chu Wang   +7 more
doaj   +1 more source

Comprehensive Analysis of a Yeast Lipase Family in the Yarrowia Clade. [PDF]

open access: yesPLoS ONE, 2015
Lipases are currently the subject of intensive studies due to their large range of industrial applications. The Lip2p lipase from the yeast Yarrowia lipolytica (YlLIP2) was recently shown to be a good candidate for different biotechnological applications.
Muchalin Meunchan   +5 more
doaj   +1 more source

Directed evolution of lipase A from Bacillus subtilis for the preparation of enantiocomplementary sec-alcohols

open access: yesGreen Synthesis and Catalysis, 2021
Biocatalysts with tailor-made or controllable stereoselectivity are valuable and highly desired in the precision synthesis of chiral compounds. Most lipases display excellent (R)-enantioselectivity for various sec-alcohols.
Danyang Li   +5 more
doaj   +1 more source

Enantioselective Tsuji Allylations [PDF]

open access: yesChemistry – An Asian Journal, 2007
AbstractThe family of allylation reactions developed by Tsuji in the 1980s are capable of generating tertiary and quaternary carbon stereocenters from several synthetic precursors. Despite the utility of these transformations, they have seen little use in the synthesis of natural products.
Mohr, Justin T., Stoltz, Brian M.
openaire   +3 more sources

Computational Study of Mechanism and Enantioselectivity of Imine Reductase from Amycolatopsis orientalis

open access: yesChemistryOpen, 2022
Imine reductases (IREDs) are NADPH‐dependent enzymes (NADPH=nicotinamide adenine dinucleotide phosphate) that catalyze the reduction of imines to amines.
Dr. Mario Prejanò   +2 more
doaj   +1 more source

Enantioselectivity of discretized helical supramolecule consisting of achiral cobalt phthalocyanines via chiral-induced spin selectivity effect

open access: yesNature Communications, 2023
Enantioselectivity of helical aggregation is conventionally directed either by its homochiral ingredients or by introduction of chiral catalysis. The fundamental question, then, is whether helical aggregation that consists only of achiral components can ...
Hiroki Aizawa   +7 more
doaj   +1 more source

Engineering of Yeast Old Yellow Enzyme OYE3 Enables Its Capability Discriminating of (E)-Citral and (Z)-Citral

open access: yesMolecules, 2021
The importance of yeast old yellow enzymes is increasingly recognized for direct asymmetric reduction of (E/Z)-citral to (R)-citronellal. As one of the most performing old yellow enzymes, the enzyme OYE3 from Saccharomyces cerevisiae S288C exhibited ...
Tairan Wang   +10 more
doaj   +1 more source

Enantioselective Self-Replicators

open access: yesJournal of the American Chemical Society, 2023
Self-replicating molecules provide a simple approach for investigating fundamental processes in scenarios of the emergence of life. Although homochirality is an important aspect of life and of how it emerged, the effects of chirality on self-replicators have received only little attention so far.
Yang, Shuo   +5 more
openaire   +3 more sources

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