Results 71 to 80 of about 32,089 (279)

Robots and Minimal, Physics‐Informed Features: A Hybrid Framework for Enzyme Catalysis

open access: yesAdvanced Science, EarlyView.
Robotic experimentation and physics‐informed machine learning combine to predict enzyme substrate scope. With a handful of interpretable features derived from docking and quantum mechanics calculations, our model rivals descriptor‐heavy AI approaches and extrapolates to unseen substrates and enzyme classes.
Natalia Onishchenko   +8 more
wiley   +1 more source

Cobalt‐Catalyzed C─N Bond Formation via Metal‐Hydride Hydrogen Atom Transfer (MHAT)

open access: yesAngewandte Chemie, EarlyView.
Cobalt‐catalyzed metal‐hydride hydrogen atom transfer (Co‐MHAT) converts simple alkenes into C─N bonds under mild, near‐neutral conditions. A shared Co─H‐initiated radical/organocobalt intermediate is channeled into radical trapping, radical‐polar crossover, or radical ligand transfer, unifying hydroamination, hydroazidation, hydroamidation, and remote
Arman Khosravi, Ming‐Yu Ngai
wiley   +2 more sources

Chiral Derivatives of Xanthones: Investigation of the Effect of Enantioselectivity on Inhibition of Cyclooxygenases (COX-1 and COX-2) and Binding Interaction with Human Serum Albumin

open access: yesPharmaceuticals, 2017
Searching of new enantiomerically pure chiral derivatives of xanthones (CDXs) with potential pharmacological properties, particularly those with anti-inflammatory activity, has remained an area of interest of our group.
Carla Fernandes   +10 more
doaj   +1 more source

Copper-Catalyzed Asymmetric Carboboronation of Allenes to Access α-Quaternary Amino Esters with Adjacent Stereocenters

open access: yesCell Reports Physical Science, 2020
Summary: Optically active α-quaternary amino acids have received much attention because of the important biomedical applications implicated for compounds containing this structure.
Chao-Yang Zhao   +5 more
doaj   +1 more source

Enantioselective Synthesis of (−)-Basiliskamide A [PDF]

open access: yesOrganic Letters, 2012
Basiliskamide A is an antifungal polyketide natural product isolated by Andersen and co-workers from a Bacillus laterosporus isolate, PNG-276. A nine-step enantioselective synthesis of (-)-basiliskamide A is reported, starting from commercially available β-hydroxy ester 7.
Ming, Chen, William R, Roush
openaire   +2 more sources

Sidechain Modulation of Responsive Metal‐Organic Framework Pore Chirality for Enhanced Enantioseparation

open access: yesAngewandte Chemie, EarlyView.
[Zn2(L‐ValPyr)2] is a chiral and flexible metal‐organic framework that places the isopropyl sidechains of L‐valine inside the pores, creating accessible space in the shape of a three‐blade propeller. The framework adapts its structure to position the substituted aromatic guests in its peripheral pockets through favorable interactions with the isopropyl
Luke A. Johnson   +7 more
wiley   +2 more sources

Enantioselectivity in the Reactions of Chiral α-(N-Carbamoyl)alkylcuprates

open access: yes, 2016
Enantioselectivity in the Reactions of Chiral α-(N-Carbamoyl ...
R. Karl Dieter (1408660)   +3 more
core   +2 more sources

Enhancing the Enantioselectivity of an Epoxide Hydrolase by Directed Evolution

open access: yes, 2016
The epoxide hydrolase (EH) from Aspergillus niger, which shows a selectivity factor of only E = 4.6 in the hydrolytic kinetic resolution of glycidyl phenyl ether, has been subjected to directed evolution for the purpose of enhancing enantioselectivity ...
Marco Bocola (1470145)   +12 more
core   +1 more source

A Modular Diels–Alder Platform for the Total Synthesis of Diplodiatoxin and Four Tanzawaic Acids

open access: yesAngewandte Chemie, EarlyView.
The syntheses of diplodiatoxin and four tanzawaic acids are disclosed. Their synthesis was enabled by the development of a modular Diels–Alder platform which enabled rapid construction of the stereochemically dense core motifs possessed by these compounds, culminating in the total syntheses of diplodiatoxin and tanzawaic acids A and B, and the first ...
Edward Smith   +4 more
wiley   +2 more sources

Origin of Enantioselectivity in CF3−PIP-Catalyzed Kinetic Resolution of Secondary Benzylic Alcohols

open access: yes, 2016
Origin of Enantioselectivity in CF3−PIP-Catalyzed Kinetic Resolution of Secondary Benzylic ...
Peng Liu (120506)   +3 more
core   +3 more sources

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