Results 71 to 80 of about 58,537 (265)

Quiralidade em moléculas e cristais Chirality at molecules and crystals

Química Nova, 2009
The present contribution describes some concepts of stereochemistry and chirality in molecules and crystals. This paper also reports on the development of a simple and fast experiment to prepare and recognize conglomerate and true racemate of tartaric ...
Ayres Guimarães Dias, Renato de Oliveira Soares   +1 more
doaj   +1 more source

Genomics-inspired discovery of massiliachelin, an agrochelin epimer from Massilia sp. NR 4-1

Beilstein Journal of Organic Chemistry, 2019
A putative siderophore locus was detected in the genome of the violacein-producing bacterium Massilia sp. NR 4-1 and predicted to direct the biosynthesis of a molecule that is structurally related to the thiazoline-containing siderophore micacocidin.
Jan Diettrich, Hirokazu Kage, Markus Nett   +2 more
doaj   +1 more source

Stereochemistry of the oxidation at the α carbon of butyryl‐CoA and of the enzymic hydrogen exchange [PDF]

, 1970
J.F. Biellmann, C. Hirth
openalex   +1 more source

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

ChemistryOpen, 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, Tatiana Woller, Ruben Van Lommel, Prof. Frank De Proft, Prof. Guido Verniest, Prof. Mercedes Alonso   +5 more
doaj   +1 more source

Stereochemistry of the oxidation at the β‐carbon of butyryl‐SCoA [PDF]

, 1970
J.F. Biellmann, C. Hirth
openalex   +1 more source

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

Beilstein 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, Patrick Rabe, Laura zur Horst, Jeroen S. Dickschat   +3 more
doaj   +1 more source

Preparation and Stereochemistry of Cobalt(III) Complexes with Tetramines Derived from 1-(2-Pyridyl)ethylamine [PDF]

, 1980
Toshishige M. Suzuki, Tetsuo Kimura, Junnosuke Fujita   +2 more
openalex   +1 more source

Crystal structure, computational study, and Hirshfeld analysis of exo-1,2,3,5-tetraphenyl-1a',9b'-dihydrospiro[bicyclo[3.1.0]hexane-6,1′-cyclopropa[l]phenanthren]-2-en-4-one

Acta Crystallographica Section E: Crystallographic Communications
The reaction of dibenzonorcarynyliden(e/oid) with phencyclone was recently reported to give a congested spiropentane with endo stereochemistry. Herein we report that, in sharp contrast, an analogous reaction using tetracyclone, instead of phencyclone ...
Alexander D. Roth, Dasan M. Thamattoor
doaj   +1 more source

Principles and Applications of Stereochemistry. By M. North [PDF]

, 1999
Shu‐Kun Lin
openalex   +1 more source

Determining the Stereochemistry of Molecules from Residual Dipolar Couplings (RDCs) [PDF]

, 2012
Benjamin Böttcher, Christina M. Thiele
openalex   +1 more source