Results 61 to 70 of about 19,944 (197)
, 2003 The method for preparation of molecularly imprinted monolithic stationary phase has been improved to achieve liquid chromatographic separation of enantiomers and diastereomers. By adopting low polar porogenic solvents of toluene and dodecanol and optimal
Kong, L +4 more
core
Stereoselective Divergent Synthesis of Four Diastereomers of Pachastrissamine (Jaspine B)
, 2016 A divergent short synthesis of four diastereomers of pachastrissamine was achieved. Natural pachastrissamine was synthesized through bis-tosylation of the common intermediate and cyclization.
Hiroaki Ohno (1457971) +4 more
core +1 more source
Data in Brief, 2019 This article presents new data on the properties of the diastereomers of a mono-substituted phosphoryl guanidine trideoxyribonucleotides d(TpCp*A) [1,2].
Alexander A. Lomzov +6 more
doaj +1 more source
Chromatographic profiles of the PNA monomer derivatives (diastereomers).
, 2015 (A) Mixture of diastereomers 7a and 7b; (B) Diastereomer 7a (Conditions: Luna column, 5 μm, CN 100A, elution system: heptane/isopropanol (88/12), flow rate: 1 mL/min); (C) Mixture of diastereomers 8a and 8b; (D) Diastereomer 8a (Conditions: Separon SGX ...
Nataliya Boyarskaya (814094) +9 more
core +1 more source
The synthesis of the 2,3-difluorobutan-1,4-diol diastereomers
Beilstein Journal of Organic Chemistry, 2017 The diastereoselective synthesis of fluorinated building blocks that contain chiral fluorine substituents is of interest. Here we describe optimisation efforts in the synthesis of anti-2,3-difluorobutane-1,4-diol, as well as the synthesis of the ...
Robert Szpera +4 more
doaj +1 more source
, 2004 Three molecularly imprinted monolithic columns with different length but almost identical column volume had been prepared. It was observed that the separation factors of diastereomers and enantiomers were almost unaffected by column length.
Zou, HF +4 more
core +1 more source
BioResources, 2015 Studying the stereochemistry of lignin as a natural chiral polymer may have scientific and technical importance regarding the behavior of lignin and delignification processes.
Mahnaz Oghbaie +2 more
doaj +1 more source
Analysis of L- and D-Amino Acids Using UPLC
Bio-Protocol, 2014 With the exception of glycine, α-amino acids are optically active, and two optical isomers (L- and D-) of each amino acid can be formed. Recent developments of analytical techniques have revealed that several free D-amino acids such as D-aspartate, D ...
Yuta Mutaguchi, Toshihisa Ohshima
doaj +1 more source
, 1992 The diastereomers of 3,N,N′-trimethyl-2-phenyl-1,4-piperazine dihydrochloride (TPP) were tested for their effects on NA, DA and 5-HT uptake in synaptosomes prepared from hypothalamus, corpus striatum, and frontal cortex, respectively.
Tytgat, D. +3 more
core +1 more source
Synthesis of phosphatidylcholine analogs with an alkyl group at C1 or C3 of the glycerol moiety.
Journal of Lipid Research, 1985 The syntheses of 1,2-di-(O-hexadecyl)-rac-glycero-3-phosphocholines containing a methyl group at either C1 or C3 of the glycerol moiety are described. The methyl group was introduced at C1 in a synthetic scheme beginning with the hydroxylation of methyl ...
N M Witzke, R Bittman
doaj +1 more source