Results 21 to 30 of about 78,209 (163)

Lasonolide A:  Structural Revision and Synthesis of the Unnatural (−)-Enantiomer

, 2016
Total synthesis of the unnatural (−)-enantiomer of lasonolide A was achieved starting from ethyl l-malate. The two tetrahydropyranyl fragments were prepared stereoselectively via radical cyclization reactions of β-alkoxyacrylates.
Jung Won Kang (163902), Cheol-Kyu Jung (2513788), Dae-Shik Kim (506430), Eun Lee (418436), Jung Min Joo (1433365), Ho Young Song (2987520)   +5 more
core   +1 more source

Announcement for “Separations 2019 Outstanding Reviewer Award” Winner

, 2020
Peer review is an essential part of the publication process, ensuring that Separations maintains high quality standards for its published papers [...
Separations Editorial Office Separations Editorial Office
core   +1 more source

Enantiomer-Specific Oriented Attachment of Guanidine Carbonate Crystals

, 2016
Oriented attachment, a nonclassical crystallization phenomenon, describes the spontaneous self-assembly of adjoining crystals with common crystallographic orientations.
Reajean Sivakumar (2808853), Julien Kwiatoszynski (2808856), Pui Shan Monica Cheung (2113942), Pedro Cintas (1685068), Cheung, Pui Shan Monica, Cuccia, Louis A., Viedma Molero, Cristóbal, Thi Phuong Thao Nguyen (1838428), Louis A. Cuccia (1824514), Kwiatoszynski, Julien, Cristóbal Viedma (2808850), Ramrup, Parsram, Amaury Fouret (2808859), Nguyen, Thi Phuong Thao, Cintas, Pedro, Sivakumar, Reajean, Fouret, Amaury, Parsram Ramrup (1838422)   +17 more
core   +1 more source

Conversion of (−)-3-Dehydroshikimic Acid into Derivatives of the (+)-Enantiomer

, 2016
(−)-3-DHS (1), a compound available in large quantity through “engineering” of the shikimic acid pathway, has been converted over eight steps into the methyl ester, ent-2, of the (+)-enantiomer.
Katrina A. Jolliffe (401409), Alison J. Edwards (1444183), Martin G. Banwell (1413205), Michael Essers (3030534)   +3 more
core   +2 more sources

Bioinert chiral columns with Dursan-coated stainless-steel hardware for enantioselective liquid chromatography of polar analytes

Journal of Chromatography Open
Analyte interactions with metal surfaces of column hardware are a well-known source of peak tailing, carry-over and poor recovery, particularly for polar compounds with chelating properties that have a high metal affinity and surface adsorption potential
Mirna Maalouf, Mateusz Janek, Enrico Friedrich, Nicolas Hausser, Jesse Bischof, Michael Lämmerhofer   +5 more
doaj   +1 more source

Electrodialysis system for large-scale enantiomer separation

, 2001
In contrast to analytical methods, the range of technologies currently applied for large-scale enantiomer separations is not very extensive. Therefore, a new system has been developed for large-scale enantiomer separations that can be regarded as the ...
Keurentjes, J.T.F., Padt, van der, A., Ent, van der, E.M., Thielen, T.P.H.   +3 more
core   +2 more sources

Impact of HPLC Parameters on Chiral Separation of Nornicotine Enantiomers

Contributions to Tobacco and Nicotine Research
Given the well-documented pharmacological differences between nicotine and nornicotine enantiomers, understanding their distribution is essential. This knowledge also helps authenticate the enantiomers’ source (natural or synthetic).
Ashraf-Khorassani Mehdi, Coleman William M., Umstead Weston M.   +2 more
doaj   +1 more source

Green HPLC Enantioseparation of Chemopreventive Chiral Isothiocyanates Homologs on an Immobilized Chiral Stationary Phase Based on Amylose tris-[(S)-α-Methylbenzylcarbamate]

Molecules
Sulforaphane is a chiral phytochemical with chemopreventive properties. The presence of a stereogenic sulfur atom is responsible for the chirality of the natural isothiocyanate.
Francesca Romana Mammone, Alessia Panusa, Roberta Risoluti, Roberto Cirilli   +3 more
doaj   +1 more source

Enantioselective nanofiltration using predictive process modeling: bridging the gap between materials development and process requirements

, 2022
Organic solvent nanofiltration (OSN) is a low-energy alternative for continuous separations in the chemical industry. As the pharmaceutical sector increasingly turns toward continuous manufacturing, OSN could become a sustainable solution for chiral ...
Beke, Aron K.
core   +1 more source

Chromatographic Separation of Vitamin E Enantiomers [PDF]

Molecules, 2017
Vitamin E is recognized as an essential vitamin since its discovery in 1922. Most vegetable oils contain a mixture of tocopherols and tocotrienols in the vitamin E composition. Structurally, tocopherols and tocotrienols share a similar chromanol ring and a side chain at the C-2 position. Owing to the three chiral centers in tocopherols, they can appear
Ju-Yen Fu, Thet-Thet Htar, Leanne De Silva, Doryn Meam-Yee Tan, Lay-Hong Chuah   +4 more
openaire   +3 more sources