Results 11 to 20 of about 2,499 (191)

Enantioseparation of new axially chiral carboxylic acids on polysaccharide-based chiral stationary phases under normal phase elution conditions [PDF]

Journal of Pharmaceutical and Biomedical Analysis Open, 2023
In the last decade, the availability of new and versatile synthetic strategies for the preparation of substituted 4,4’-bipyridyl derivatives based on chemo- and regioselective functionalization of the 4,4’-bipyridine core has encouraged studies for ...
Barbara Sechi, Victor Mamane, Roberto Dallocchio, Alessandro Dessì, Sergio Cossu, Giorgi Jibuti, Paola Peluso   +6 more
doaj   +5 more sources

Comparative enantioseparation of planar chiral ferrocenes on polysaccharide‐based chiral stationary phases [PDF]

Chirality, 2022
AbstractPlanar chiral ferrocenes are well‐known compounds that have attracted interest for application in synthesis, catalysis, material science, and medicinal chemistry for several decades. In spite of the fact that asymmetric synthesis procedures for obtaining enantiomerically enriched ferrocenes are available, sometimes, the accessible enantiomeric ...
Alessandro Dessì, Barbara Sechi, Roberto Dallocchio, Bezhan Chankvetadze, Mireia PérezBaeza, Sergio Cossu, Victor Mamane, Patrick Pale, Paola Peluso   +8 more
openaire   +9 more sources

Reticular Frameworks for Advanced Polymer Materials. [PDF]

Adv Mater
Reticular frameworks (RFs) such as metal–organic frameworks, covalent organic frameworks, and hydrogen‐bonded organic frameworks offer versatile platforms for polymer materials innovation, enabling regulated polymerization, efficient macromolecular purification, and polymer functionalization.
Cheng B, Hosono N, Uemura T.
europepmc   +2 more sources

Chiral Recognition Mechanism of Benzyltetrahydroisoquinoline Alkaloids: Cyclodextrin-Mediated Capillary Electrophoresis, Chiral HPLC, and NMR Spectroscopy Study [PDF]

Molecules
The tetrahydroisoquinoline skeleton is a pharmacologically significant core structure containing chiral centers, making enantiomeric separation crucial due to the potentially distinct biological effects of each enantiomer.
Erzsébet Várnagy, Gergő Tóth, Sándor Hosztafi, Máté Dobó, Ida Fejős, Szabolcs Béni   +5 more
doaj   +2 more sources

Comprehensive Review on Chiral Stationary Phases in Single-Column Simultaneous Chiral–Achiral HPLC Separation Methods [PDF]

Molecules
This comprehensive review explores the utilization of chiral stationary phases (CSPs) in the context of single-column simultaneous chiral–achiral high-performance liquid chromatography (HPLC) separation methods. While CSPs have traditionally been pivotal
Lajos Attila Papp, Zoltán István Szabó, Gabriel Hancu, Lénárd Farczádi, Eleonora Mircia   +4 more
doaj   +2 more sources

Photoluminescence Properties of Lignin With a Genetically Introduced Luminophore in a Transgenic Hybrid Aspen That Overproduces Feruloyl-CoA 6'-Hydroxylase. [PDF]

Plant Biotechnol J
ABSTRACT Lignin, a major cell‐wall component of woody biomass, exhibits photoluminescent (PL) properties. Controlling the intensity and colour of the PL is essential for producing lignin‐based value‐added materials. Herein, we modify the PL properties of lignin via genetic engineering of novel luminophore structures. Feruloyl‐CoA 6′‐hydroxylase (F6′H1)
Takada M, Horinouchi S, Wang N, Uesugi M, Kajita S.   +4 more
europepmc   +2 more sources

Chiral Cobaltabis(dicarbollide) Catalysts Prepared Using a Silica Helical Nanoplatform for the Enantioselective Photooxidation of Aromatic Secondary Alcohols. [PDF]

Chemistry
Chiral COSAN Nanocatalysts: Enantiopure silica COSAN‐Hybrid nanohelices have been prepared by electrostatic co‐assembly of achiral COSAN anions and silica hybrid nanohelices. Their optical activity was confirmed by CD and ROA measurements. These COSAN‐Hybrids are efficient and recoverable catalysts in the photooxidative kinetic resolution of aromatic ...
Wang H, Pouget E, Morvan E, Buffière S, Daugey N, Danten Y, Buffeteau T, Oda R, Nlate S.   +8 more
europepmc   +2 more sources

Enantioseparation of syn- and anti-3,5-Disubstituted Hydantoins by HPLC and SFC on Immobilized Polysaccharides-Based Chiral Stationary Phases

Separations, 2022
The enantioseparation of syn- and anti-3,5-disubstituted hydantoins 5a–i was investigated on three immobilized polysaccharide-based columns (CHIRAL ART Amylose-SA, CHIRAL ART Cellulose-SB, CHIRAL ART Cellulose-SC) by high performance liquid ...
Mladenka Jurin, Darko Kontrec, Tonko Dražić, Marin Roje   +3 more
doaj   +1 more source

The Separation of Cannabinoids on Sub-2 µm Immobilized Polysaccharide Chiral Stationary Phases

Pharmaceuticals, 2021
The increased use and applicability of Cannabis and Cannabis-derived products has skyrocketed over the last 5 years. With more and more governing bodies moving toward medical and recreational legalization, the need for robust and reliable analytical ...
Takafumi Onishi, Weston J. Umstead
doaj   +1 more source

Immobilized Polysaccharide-Based Chiral Stationary Phases for HPLC [PDF]

Polymer Journal, 2006
Polysaccharide derivatives, such as phenylcarbamates and benzoates of cellulose and amylose, are known to show high chiral recognition abilities for many racemates when used as chiral stationary phases (CSPs) for high-performance liquid chromatography (HPLC).
Tomoyuki Ikai, Chiyo Yamamoto, Masami Kamigaito, Yoshio Okamoto   +3 more
openaire   +1 more source