Results 21 to 30 of about 19,944 (197)

Preparative thin-layer and column chromatography of prostaglandins

Journal of Lipid Research, 1969
Analytical and preparative chromatographic methods for monounsaturated prostaglandins are described. The systems were developed specifically for separation of the various hydroxy epimers of prostaglandin E1 and F1 but also offer superior separations for ...
Niels H. Andersen
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Synthesis and characterization of the diastereomers of HHC and H4CBD

Natural Product Communications, 2023
Abstract The characterization of any compound is important in the field of chemistry. As the field of cannabinoid chemistry grows so does the need for the characterization of new cannabinoids or rare cannabinoids that gain popularity within the consumer and research fields.
Arianna Collins, Giovanni Ramirez, Tesfay Tesfatsion, Kyle P Ray, Scott Caudill, Westley Cruces   +5 more
openaire   +1 more source

Asymmetric synthesis of α-alkylated carbonyl compounds and their biological application [PDF]

Delta Journal of Science, 2002
Creation of asymmetric centers is the fundamental basis of asymmetric synthesis as the resulting diastereomers or enantiomers are formed in unequal ratio.
Hamada Mandour, Adel Selim, Mariam Ezzat, Ahmed Noser   +3 more
doaj   +1 more source

Bioinspired-Metalloporphyrin Magnetic Nanocomposite as a Reusable Catalyst for Synthesis of Diastereomeric (−)-Isopulegol Epoxide: Anticancer Activity Against Human Osteosarcoma Cells (MG-63)

Molecules, 2018
In the present study, we developed a green epoxidation approach for the synthesis of the diastereomers of (−)-isopulegol benzyl ether epoxide using molecular oxygen as the oxidant and a hybrid manganese(III)-porphyrin magnetic reusable ...
Lucas D. Dias, Ana L. M. Batista de Carvalho, Sara M. A. Pinto, Gilberto L. B. Aquino, Mário J. F. Calvete, Liane M. Rossi, M. P. M. Marques, Mariette M. Pereira   +7 more
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Separation of diastereomers [PDF]

, 2023
A method of directly separating into its individual diastereomers, diastereomeric mixtures containing optically active compounds of the formulae AND which comprises first crystallizing the said mixture from an aromatic hydrocarbon solvent to recover ...

core  

HPLC Separation of Diastereomers: Chiral Molecular Tools Useful for the Preparation of Enantiopure Compounds and Simultaneous Determination of Their Absolute Configurations

Molecules, 2016
To obtain enantiopure compounds, the so-called chiral high performance liquid chromatography (HPLC) method, i.e., HPLC using a chiral stationary phase, is very useful, as reviewed in the present Special Issue.
Nobuyuki Harada
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Preparation and Use of a General Solid-Phase Intermediate to Biomimetic Scaffolds and Peptide Condensations

Molecules, 2018
The Distributed Drug Discovery (D3) program develops simple, powerful, and reproducible procedures to enable the distributed synthesis of large numbers of potential drugs for neglected diseases.
J. Geno Samaritoni, Jacek G. Martynow, Martin J. O’Donnell, William L. Scott   +3 more
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Diastereomers of 5-S-cysteinyldopa

Acta Dermato-Venereologica, 1983
Diastereomers of 5-S-cysteinyldopa formed from D-dopa and L-cysteine or from L-dopa and D-cysteine can be separated from 5-S-cysteinyldopa formed from L-dopa and L-cysteine by liquid chromatography. The diastereomers have a great potential as internal standards in the analysis of 5-S-cysteinyldopa.
G, Agrup, L E, Edholm, H, Rorsman, E, Rosengren   +3 more
openaire   +2 more sources

Biodegradability and toxicity of monorhamnolipid biosurfactant diastereomers [PDF]

Journal of Hazardous Materials, 2019
Synthetic monorhamnolipids differ from biologically produced material because they are produced as single congeners, depending on the β-hydroxyalkanoic acid used during synthesis. Each congener is produced as one of four possible diastereomers resulting from two chiral centers at the carbinols of the lipid tails [(R,R), (R,S), (S,R) and (S,S)].
David E. Hogan, Fei Tian, Scott W. Malm, Christopher Olivares, Ricardo Palos Pacheco, Michael T. Simonich, Anoop S. Hunjan, Robert L. Tanguay, Walter T. Klimecki, Robin Polt, Jeanne E. Pemberton, Joan E. Curry, Raina M. Maier   +12 more
openaire   +2 more sources

Systematic synthetic study of four diastereomerically distinct limonene-1,2-diols and their corresponding cyclic carbonates

Beilstein Journal of Organic Chemistry, 2019
In order to produce versatile and potentially functional terpene-based compounds, a (R)-limonene-derived diol and its corresponding five-membered cyclic carbonate were prepared.
Hiroshi Morikawa, Jun-ichi Yamaguchi, Shun-ichi Sugimura, Masato Minamoto, Yuuta Gorou, Hisatoyo Morinaga, Suguru Motokucho   +6 more
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