Results 281 to 290 of about 36,653 (344)
Some of the next articles are maybe not open access.
Stereoisomerism and local chirality
Journal of the American Chemical Society, 1984Etude des concepts classiques et presentation de concepts nouveaux concernant la stereochimie et la chiralite ...
Jay S. Siegel, Kurt Mislow
openaire +3 more sources
Stereoisomerization of Cyclic Silanols
Chemistry – An Asian Journal, 2017AbstractStereoisomerization of readily available all‐cis‐1,3,5,7‐tetrahydroxy‐1,3,5,7‐tetraisobutylcyclotetrasiloxane (1 a) was carried out under acidic conditions to afford cis‐trans‐cis (1 b), all‐trans (1 c), and cis‐cis‐trans (1 d) isomers. The compounds in the reaction mixture could be easily separated into 1 a and a mixture of 1 b, 1 c, and 1 d ...
Hisayuki Endo +2 more
openaire +3 more sources
Acta Crystallographica. Section B: Structural Science, Crystal Engineering and Materials, 2017
The automated identification of chiral centres in molecular residues is a non-trivial task. Current tools that allow the user to analyze crystallographic data entries do not identify chiral centres in some of the more complex ring structures, or lack the
E. Grothe, H. Meekes, R. Gelder
semanticscholar +1 more source
The automated identification of chiral centres in molecular residues is a non-trivial task. Current tools that allow the user to analyze crystallographic data entries do not identify chiral centres in some of the more complex ring structures, or lack the
E. Grothe, H. Meekes, R. Gelder
semanticscholar +1 more source
, 2017
In the present study, two sugar-based perylenediimide derivatives (PDIs) substituted at the imide positions with carbohydrate groups were synthesized to investigate the impact of the stereoisomerism of the sugar on the aggregation morphology and ...
Xiaotian Liu +4 more
semanticscholar +1 more source
In the present study, two sugar-based perylenediimide derivatives (PDIs) substituted at the imide positions with carbohydrate groups were synthesized to investigate the impact of the stereoisomerism of the sugar on the aggregation morphology and ...
Xiaotian Liu +4 more
semanticscholar +1 more source
Correlation Diagrams of Epimeric Stereoisograms for Stereoisomerism of Cyclopropane Derivatives
Bulletin of the Chemical Society of Japan, 2018Stereoisomerism of cyclopropanes is systematically discussed by means of stereoisograms and their correlation diagrams.
S. Fujita
semanticscholar +1 more source
Chemical Communications, 2014
This work explores, for the first time, the stereoisomerism effect of sugar units of glycopolymers on hydrogelation. Three glycopolymers with an identical main chain but different pendent sugar stereoisomers are employed.
Mingchang Lin +3 more
semanticscholar +1 more source
This work explores, for the first time, the stereoisomerism effect of sugar units of glycopolymers on hydrogelation. Three glycopolymers with an identical main chain but different pendent sugar stereoisomers are employed.
Mingchang Lin +3 more
semanticscholar +1 more source
Effect of stereoisomerism of the alkyl chain on the gas sensing properties based on perylene dyes
, 2015Here we have shown that it is possible to modulate intermolecular interactions of perylene dyes by simply changing the stereoisomerism of the alkyl chain.
Chunli Li +4 more
semanticscholar +1 more source
Journal of the American Chemical Society, 2014
Investigations detailed herein provide insight regarding the mechanism of stereochemical inversion of stereogenic-at-Ru carbene complexes through a nonolefin metathesis-based polytopal rearrangement pathway. Computational analyses (DFT) reveal that there
S. Torker, R. Khan, A. Hoveyda
semanticscholar +1 more source
Investigations detailed herein provide insight regarding the mechanism of stereochemical inversion of stereogenic-at-Ru carbene complexes through a nonolefin metathesis-based polytopal rearrangement pathway. Computational analyses (DFT) reveal that there
S. Torker, R. Khan, A. Hoveyda
semanticscholar +1 more source
, 2015
Timosaponin B-II (TB-II), a representative furostanol saponin from Rhizoma Anemarrhenae, has been used to treat diabetes and senile dementia. To better understand the action mechanism of TB-II, it is indispensable to study its metabolism profile in vivo.
Zhiwen Fu +4 more
semanticscholar +1 more source
Timosaponin B-II (TB-II), a representative furostanol saponin from Rhizoma Anemarrhenae, has been used to treat diabetes and senile dementia. To better understand the action mechanism of TB-II, it is indispensable to study its metabolism profile in vivo.
Zhiwen Fu +4 more
semanticscholar +1 more source
Pseudorotaxane orientational stereoisomerism driven by π-electron density.
Chemical Communications, 2014Pseudo[2]rotaxane orientational isomers were formed in a stereocontrolled way by exploiting the electron-withdrawing (EW) or electron-donating (ED) effects of para-substituted dibenzylammonium axles threaded through the π-electron rich calixarene cavity,
C. Gaeta, Carmen Talotta, P. Neri
semanticscholar +1 more source