scholarly journals N-Glycosylation with Sulfoxide Donors for the Synthesis of Peptidonucleosides

2021 ◽  
Author(s):  
Margaux Beretta ◽  
Emilie Rouchaud ◽  
Lionel Nicolas ◽  
Jean-Pierre Vors ◽  
Thomas Dröge ◽  
...  
Keyword(s):  
Methodological Study ◽  
Azide Group ◽  
Pyrimidine Bases ◽  
Leaving Groups

<p>We report here the synthesis of peptidonucleosides obtained after glycosylation of different pyrimidine bases with glucopyranosyl donors carrying an azide group at the C4 position. A methodological study involving different anomeric leaving groups (acetate, phenylsulfoxide and <i>ortho</i>-hexynylbenzoate) showed that a sulfoxide donor in combination with trimethylsilyl triflate as the promoter led to the best yields.</p>

scholarly journals N-Glycosylation with Sulfoxide Donors for the Synthesis of Peptidonucleosides

2021 ◽  
Author(s):  
Margaux Beretta ◽  
Emilie Rouchaud ◽  
Lionel Nicolas ◽  
Jean-Pierre Vors ◽  
Thomas Dröge ◽  
...  
Keyword(s):  
Methodological Study ◽  
Azide Group ◽  
Pyrimidine Bases ◽  
Leaving Groups

<p>We report here the synthesis of peptidonucleosides obtained after glycosylation of different pyrimidine bases with glucopyranosyl donors carrying an azide group at the C4 position. A methodological study involving different anomeric leaving groups (acetate, phenylsulfoxide and <i>ortho</i>-hexynylbenzoate) showed that a sulfoxide donor in combination with trimethylsilyl triflate as the promoter led to the best yields.</p>

The concurrent recording of electroencephalography and impedance cardiography: A methodological study

1996 ◽  
Author(s):  
Kim M. Dalton ◽  
Richard J. Davidson
Keyword(s):  
Impedance Cardiography ◽  
Methodological Study

Patterns of adjustment problems at age 13: An empirical and methodological study

1984 ◽  
Author(s):  
Lars R. Bergman ◽  
David Magnusson
Keyword(s):  
Methodological Study ◽  
Adjustment Problems

Women's Reactions to Partner Abuse Research: A Mixed Methodological Study

2012 ◽  
Author(s):  
Katie M. Edwards ◽  
Kateryna M. Sylaska ◽  
Arianna K. Schaaff ◽  
Megan J. Murphy ◽  
Christine A. Gidycz
Keyword(s):  
Partner Abuse ◽  
Methodological Study

Identification of Fibrinogen Derivatives in Plasma Samples

1972 ◽  
Vol 27 (03) ◽  
pp. 610-618 ◽  
Author(s):  
H Graeff ◽  
R von Hugo
Keyword(s):  
Molecular Weight ◽  
Gel Electrophoresis ◽  
Gel Chromatography ◽  
Agarose Gel ◽  
Plasma Samples ◽  
Methodological Study ◽  
Parent Molecule ◽  
Electrophoretic Mobilities ◽  
Fibrin Monomer

SummaryThe observation of fibrinogen derivatives with a molecular weight higher than the parent molecule in human cases of DIC initiated the present methodological study. These derivatives were identified by the following methods : 2.5 M β-alanine precipitation of the plasma samples, PAA gel electrophoresis, intra gel immunoprecipitation and agarose gel chromatography. In the plasma of a patient with severe eclampsia and laboratory signs of DIC two derivatives with a molecular weight higher than that of fibrinogen were identified according to their relative electrophoretic mobilities: 0.18 and 0.28 × 10−5 cm2/V × sec (fibrinogen: 0.43 × 10−5 cm2/V × sec). Electrophoretic studies in the presence of 5 M urea indicated that the 0.28 derivative is a complex probably formed by fibrinogen and a fibrin monomer.

METHODOLOGICAL STUDY OF THE RADIOIMMUNOASSAY OF HUMAN THYROTROPHIN

1972 ◽  
Vol 71 (1) ◽  
pp. 24-36 ◽  
Author(s):  
Ariel Gordin ◽  
Pirkko Saarinen
Keyword(s):  
Healthy Subjects ◽  
Binding Capacity ◽  
Paper Electrophoresis ◽  
Storage Conditions ◽  
Methodological Study ◽  
Double Antibody ◽  
The Mean ◽  
Specific Activities ◽  
Initial Binding ◽  
In Pregnancy

ABSTRACT An account is given of a methodological study of the double-antibody radioimmunoassay of human TSH, using highly purified labelled human TSH as tracer. It was shown that conventional paper electrophoresis was not adequate for studying the purity of labelled human TSH. When polyvinylchloride (Pevikon®) electrophoresis was used, four subfractions could still be separated, even though, on paper electrophoresis, the material seemed to be homogeneous. Only two of the four Pevikon fractions were immunoreactive. Purification of labelled human TSH by Pevikon electrophoresis also improved the sensitivity of the assay. Specific activities of about 100 mCi/mg gave the highest initial binding capacity, produced least damage to the labelled hormone and showed the best stability of the tracer without influencing the sensitivity of the method. In different storage conditions, labelled human TSH was found to be most stable at −20°C and diluted 1/100. Only in pregnancy did the addition of HCG seem necessary. The mean TSH value in healthy subjects was 3.6 ± 1.4 μU/ml (mean±sd) with a range from 1.6 μU/ml to 8.8 μU/ml.

A Methodological Study on Analysis of Chinese Synonym Based on Corpus

2018 ◽  
Vol 27 ◽  
pp. 83-106
Author(s):  
Youmi Moon ◽  
Byeong-kwu Kang
Keyword(s):  
Methodological Study

Infant Mortality in London, 1538–1850: a Methodological Study

2011 ◽  
pp. 45-64 ◽  
Author(s):  
Peter Razzell
Keyword(s):  
Infant Mortality ◽  
Methodological Study ◽  
Parish Registers

A review of evidence on infant mortality derived from the London bills of mortality and parish registers indicates that there were major registration problems throughout the whole of the parish register period. One way of addressing these problems is to carry out reconstitution studies of individual London parishes, but there are a number of problems with reconstitution methodology, including the traffic in corpses between parishes both inside and outside of London and the negligence of clergymen in registering both baptisms and burials. In this paper the triangulation of sources has been employed to measure the adequacy of burial registration, including the comparison of data from bills of mortality, parish registers and probate returns, as well as the use of the same-name technique. This research indicates that between 20 and 40 per cent of burials went unregistered in London during the parish register period.

A Methodological Study of Evaluating the Dependability of SOA Software System

2010 ◽  
Vol 33 (11) ◽  
pp. 2202-2210 ◽  
Author(s):  
Hui-Qun ZHAO ◽  
Jing SUN
Keyword(s):  
Software System ◽  
Methodological Study
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