Results 71 to 80 of about 158,943 (323)

Raman spectra and Magnetization of all-ferromagnetic superlattices grown on (110) oriented SrTiO3 [PDF]

open access: yesAppl. Phys. Lett. 104, 092406 (2014), 2014
Superlattices consist of two ferromagnets La0.7Sr0.3MnO3(LSMO)and SrRuO3(SRO) were grown in (110)-orientation on SrTiO3(STO) substrates. The x-ray diffraction and Raman spectra of these superlattices show the presence of in-plane compressive strain and orthorhombic structure of less than 4 u.c. thick LSMO spacer,respectively.
arxiv   +1 more source

Stereocontrolled synthesis and nuclear magnetic resonance analysis of boranophosphate/phosphate chimeric oligonucleotides

open access: yesRoyal Society Open Science
This report describes the stereoselective synthesis of boranophosphate/phosphate (PB/PO) chimeric oligodeoxynucleotides (ODNs) and the nuclear magnetic resonance (NMR) analysis of oligomers containing PB linkages.
Kiyoshi Kakuta   +4 more
doaj   +1 more source

Prediction of Stereochemistry using Q2MM

open access: yesAccounts of Chemical Research, 2016
Conspectus The standard method of screening ligands for selectivity in asymmetric, transition metal-catalyzed reactions requires experimental testing of hundreds of ligands from ligand libraries.
E. Hansen   +4 more
semanticscholar   +1 more source

A Benchmark of Density Functional Approximations For Thermochemistry and Kinetics of Hydride Reductions of Cyclohexanones

open access: yesChemistryOpen, 2019
The performance of density functionals and wavefunction methods for describing the thermodynamics and kinetics of hydride reductions of 2‐substituted cyclohexanones has been evaluated for the first time.
Xavier Deraet   +5 more
doaj   +1 more source

Beyond Chemical 1D knowledge using Transformers [PDF]

open access: yesarXiv, 2020
In the present paper we evaluated efficiency of the recent Transformer-CNN models to predict target properties based on the augmented stereochemical SMILES. We selected a well-known Cliff activity dataset as well as a Dipole moment dataset and compared the effect of three representations for R/S stereochemistry in SMILES. The considered representations
arxiv  

Molecular Transformer - A Model for Uncertainty-Calibrated Chemical Reaction Prediction [PDF]

open access: yesACS Central Science, 2019, 2018
Organic synthesis is one of the key stumbling blocks in medicinal chemistry. A necessary yet unsolved step in planning synthesis is solving the forward problem: given reactants and reagents, predict the products. Similar to other work, we treat reaction prediction as a machine translation problem between SMILES strings of reactants-reagents and the ...
arxiv   +1 more source

Review: Marine natural products [PDF]

open access: yes, 2005
This review covers the literature published in 2003 for marine natural products, with 619 citations (413 for the period January to December 2003) referring to compounds isolated from marine microorganisms and phytoplankton, green algae, brown algae, red ...
Blunt, John W.   +4 more
core   +3 more sources

A detailed view on 1,8-cineol biosynthesis by Streptomyces clavuligerus

open access: yesBeilstein Journal of Organic Chemistry, 2016
The stereochemical course of the cyclisation reaction catalysed by the bacterial 1,8-cineol synthase from Streptomyces clavuligerus was investigated using stereospecifically deuterated substrates.
Jan Rinkel   +3 more
doaj   +1 more source

Stereochemistry of malkanguniol and stereostructures of some other related polyalcohols from celastrus paniculatus willd [PDF]

open access: yes, 1974
This article does not have an ...
Hertog, H.J. den   +3 more
core   +2 more sources

Stereochemistry‐Controlled Supramolecular Architectures of New Tetrahydroxy‐Functionalised Amphiphilic Carbocyanine Dyes [PDF]

open access: yes, 2020
The syntheses of novel amphiphilic 5,5′,6,6‐tetrachlorobenzimidacarbocyanine (TBC) dye derivatives with aminopropanediol head groups, which only differ in stereochemistry (chiral enantiomers, meso form and conformer), are reported.
Berlepsch, Hans von   +6 more
core   +1 more source

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