Results 31 to 40 of about 20,067 (277)

Synthetic routes towards cryptophycin unit A diastereomers [PDF]

, 2008
Eissler S, Neumann B, Stammler H-G, Sewald N. Synthetic routes towards cryptophycin unit A diastereomers. SYNLETT. 2008;2008(2):273-277.Unit A of cryptophycin 1 is a delta-hydroxy acid with four stereogenic centres.
Stammler, Hans-Georg, Neumann, Beate, Eissler, Stefan, Sewald, Norbert ; https://orcid.org/   +3 more
core   +1 more source

Force-Triggered Atropisomerization of a Parallel Diarylethene to Its Antiparallel Diastereomers [PDF]

, 2023
This paper describes a mechanical approach to inducing the atropisomerization of a parallel diarylethene into its antiparallel diastereomers exhibiting distinct chemical reactivity.
Boyu Zhu (16504806), Xuancheng Fu (5129966), Xuancheng Fu, Xiaoran Hu, Xiaoran Hu (3046596), Boyu Zhu   +5 more
core   +1 more source

Separation of peptide diastereomers using CEC and a hydrophobic monolithic column [PDF]

, 2010
A neutral hydrophobic monolith prepared by radical in situ copolymerization of lauryl methacrylate and ethylene dimethacylate has been evaluated for the CEC separation of diastereomers of small peptides using acidic mobile phases containing ACN as ...
Ludewig, Ronny, Zou, Hanfa, Scriba, Gerhard K. E., 邹汉法, Dong, Jing   +4 more
core   +1 more source

Isolation of the 3′R and 3′S diastereomers of fasciculic acid C from the Australian mushroom Hypholoma australianum [PDF]

, 2021
Nine compounds including the new diastereomers (3′R)-fasciculic acid C (1) and (3′S)-fasciculic acid C (2), the triterpenes (3–5), the sesquiterpenes (6–7) and the diketopiperazines (8–9) were isolated from the Australian mushroom Hypholoma australianum.
Cooper, O, Ward, BT, Tiralongo, E, Carroll, AR, Elnaas, AR, Tiralongo, J, Holland, DC, Grice, ID, Voser, TM, Abitbol, A, Zunk, M, Hayton, JB, May, TW   +12 more
core   +1 more source

Separation of phosphorothioated oligonucleotide diastereomers using multiplexed drift tube ion mobility mass spectrometry. [PDF]

, 2022
peer reviewedHydrophilic interaction liquid chromatography (HILIC) coupled to drift tube ion mobility spectrometry (DTIMS) was used to separate diastereomers of five-unit oligonucleotides containing 0, 1, 2 or 3 phosphorothioate (PS) linkages ...
Fjeldsted, John C, Nix, Cindy, Demelenne, Alice, Crommen, Jacques, Fillet, Marianne, Nys, Gwenael   +5 more
core   +1 more source

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  

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
doaj   +1 more source

Comparative Study on Separation of Diastereomers by HPLC. [PDF]

, 2003
Reversed (RP-HPLC) and normal phase chromatographic (NP-HPLC) separations have been developed for diastereomers ofN-acyl-1-methyl-1,2,3,4-tetrahydo-β-carbolines which are acylated derivatives of simple natural β-carboline alkaloids. Separations
Milen, M., Hazai, L., Kettrup, A., Gebefügi, I., Poppe, L., Szantay, Cs., Fekete, J.   +6 more
core   +1 more source

Valency‐Controlled Multiphotochromism: Gated Switching and Photoswitchable Lewis Superacidity at Silicon

Angewandte Chemie, EarlyView.
Multiphotochromic switching is controlled by silicon valency in a diarylethene‐based molecular architecture. Lewis base coordination gates electronic communication between the photochromic units, thereby enabling selective access to distinct switching states.
Lennart Stoess, Valentin D. Hannibal, Lutz Greb   +2 more
wiley   +2 more sources

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
doaj   +1 more source