Results 81 to 90 of about 13,728 (257)

E/Z Isomerism Without a Double Bond – an Unusual Type of Stereoisomerism, and an Unprecedented Isomerisation in a Bicyclobutane

, 2004
An unusual kind of stereoisomerism termed E/Z isomerism without a double bond or generalised E/Z isomerism is discussed for the first time. Examples are given of pairs of synthesized and separated compounds related by this kind of isomerism (4a/5a and ...
Christoph Rücker, Haftstein, Gunter, Gunter Haftstein, Rücker, Christoph   +3 more
core  

Total Synthesis of Sacrolide A and Cytotoxic Evaluation

European Journal of Organic Chemistry, EarlyView.
Isolated from the edible cyanobacterium Aphanothece sacrum, sacrolide A is a highly potent antimicrobial and cytotoxic metabolite. Its total synthesis via a convergent strategy enabled accurate assessment of its effects on liver and colon cells, offering new insights into its bioactivity and potential health risks.
Priyanka Kataria, Kamel Hadj‐Kaddour, Alexis Giraudon, Jawad Belkheir, Alexandre Guy, Thierry Durand, Magali Gary‐Bobo, Camille Oger   +7 more
wiley   +1 more source

Stereoisomerism of 2, 3, 5, 6-Tetraphenyl-piperazine (I)

, 1951
The stereochemical study of heterocyclic compounds containing nitrogen in the ring is considered to be important to the study of the constitution and function of alkaloids, vitamins and ferments, because those cyclic systems are the important frame of ...
ハヤシ, タロウ, 林, 太郎, Hayashi, Taro   +2 more
core  

Cyclodextrins as Chiral Selectors in Capillary Electrophoresis—Recent Developments in Understanding Analyte Complexation and Applications in Pharmaceutical Analysis

ELECTROPHORESIS, EarlyView.
Cyclodextrins are the most often applied chiral selectors in CE enantioseparations. In combination with NMR spectroscopy and molecular modeling, studies for an understanding of chiral recognition underlying enantioseparations have been performed.
Gerhard K. E. Scriba
wiley   +1 more source

Automated Identification and Classification of Stereochemistry: Chirality and Double Bond Stereoisomerism

, 2013
Stereoisomers have the same molecular formula and the same atom connectivity and their existence can be related to the presence of different three-dimensional (3D) arrangements.
Teixeira, Ana L., Leal, João P., Falcao, Andre O.   +2 more
core  

Protein‐Based High‐Performance Liquid Chromatography and Cyclodextrin‐Capillary Electrokinetic Chromatography for the Chiral Separation of Azoles

ELECTROPHORESIS, EarlyView.
Human serum albumin‐based high‐performance liquid chromatography and cyclodextrin‐based capillary electrokinetic chromatography were used for the chiral separation of azoles. Although only two of the five tested azoles could be enantioseparated by liquid chromatography, all of them were separated by capillary electrokinetic chromatography using single ...
Sarah Moreau, Amy Dillon, Giacomo Russo, Susanne K. Wiedmer   +3 more
wiley   +1 more source

Inconsistent Transcriptomic Responses to Hexabromocyclododecane in Japanese Quail: A Comparative Analysis of Results From Four Different Study Designs

Environmental Toxicology and Chemistry, EarlyView.
Abstract Efforts to use transcriptomics for toxicity testing have classically relied on the assumption that chemicals consistently produce characteristic transcriptomic signatures that are reflective of their mechanism of action. However, the degree to which transcriptomic responses are conserved across different test methodologies has seldom been ...
Paul Béziers, Elena Legrand, Emily Boulanger, Niladri Basu, Jessica D. Ewald, Paula Henry, Markus Hecker, Jianguo Xia, Natalie Karouna‐Renier, Doug Crump, Jessica Head   +10 more
wiley   +1 more source

Venous blood lactate concentration as a predictor of intestinal viability in horses with acquired indirect inguinal hernia

Equine Veterinary Journal, EarlyView.
Abstract Background Acquired indirect inguinal hernia represents a life‐threatening emergency. Therapeutic decision‐making largely depends on intestinal viability, for which specific predictive parameters (such as venous lactate) have not been evaluated.
Raquel Rivero‐García, Cristina Andreu‐Vázquez, Beatriz Fuentes‐Romero, Pablo Fernández‐Hernández, María Luisa Rodríguez‐Pozo, Ignacio Aguilar Sebastián, Salvador Termes Soto, Mercedes Martínez Gallardo, Manuel Iglesias‐García   +8 more
wiley   +1 more source

New Hydrazone Derivatives Featuring Isatin and Piperazine Moieties: Synthesis, Cytotoxicity Evaluation, and Molecular Modeling Studies

Journal of Applied Toxicology, EarlyView.
ABSTRACT In this study, ten novel compounds (IPH1–IPH10) were designed by integrating three pharmacophores (isatin, piperazine, and hydrazone) commonly found in the molecular structures of anticancer agents. The target molecules were obtained by the reaction of in‐house prepared 4‐(4‐(pyridin/pyrimidin‐2‐yl)piperazin‐1‐yl)benzohydrazide with various ...
Semiha Köprü, Münevver Baran, Miyase Gözde Gündüz, Şengül Dilem Doğan   +3 more
wiley   +1 more source

Incorporating Molecule's Stereisomerism within the Machine Learning Framework

, 2014
International audienceAn important field of chemoinformatics consists in the prediction of molecule's properties, and within this field, graph kernels constitute a powerful framework thanks to their ability to combine a natural encoding of molecules by ...
Didier Villemin, Villemin, Didier, Brun, Luc, Luc Brun, Grenier, Pierre-Anthony, Pierre-Anthony Grenier   +5 more
core   +1 more source