The Fractionation of Beef Brain Ganglioside into Several Components with Thin-Layer and Column Silica Gel Chromatography

1962 ◽  
pp. 289-299 ◽  
Author(s):  
JOEL A. DAIN ◽  
H. WEICKER ◽  
GERHARD SCHMIDT ◽  
S.J. THANNHAUSER
Keyword(s):  
Thin Layer ◽  
Silica Gel ◽  
Gel Chromatography ◽  
Brain Ganglioside ◽  
Beef Brain ◽  
Silica Gel Chromatography

scholarly journals CAAC Boranes. Synthesis and characterization of cyclic (alkyl) (amino) carbene borane complexes from BF3 and BH3

2010 ◽  
Vol 6 ◽  
pp. 709-712 ◽  
Author(s):  
Julien Monot ◽  
Louis Fensterbank ◽  
Max Malacria ◽  
Emmanuel Lacôte ◽  
Steven J Geib ◽  
...  
Keyword(s):  
Silica Gel ◽  
Synthesis And Characterization ◽  
Gel Chromatography ◽  
Nmr Analysis ◽  
X Ray ◽  
X Ray Crystallography ◽  
In Situ Formation ◽  
Silica Gel Chromatography

In situ formation of two cyclic (alkyl) (amino) carbenes (CAACs) followed by addition of BF3•Et2O provided the first two examples of CAAC–BF3 complexes: 1-(2,6-diisopropylphenyl)-3,5,5-trimethyl-3-phenylpyrrolidin-2-ylidene trifluoroborane, and 2-(2,6-diisopropylphenyl)-3,3-dimethyl-2-azaspiro[4.5]decan-1-ylidene trifluoroborane. These CAAC–BF3 complexes are robust compounds that are stable to ambient laboratory conditions and silica gel chromatography. They were characterized by spectroscopy and X-ray crystallography. In contrast, a CAAC complex with borane (BH3) was readily formed in situ according to 1H and 11B NMR analysis, but did not survive the workup conditions. These results set the stage for further studies of the chemistry of CAAC boranes.

scholarly journals Determination of Phospholipid Fractions in Red Blood Cells in Retarded Physically Handicapped Children

1973 ◽  
Vol 10 (1-6) ◽  
pp. 23-27 ◽  
Author(s):  
Fay M. John ◽  
G. C. Forrest
Keyword(s):  
Red Blood Cells ◽  
Silica Gel ◽  
Blood Cells ◽  
Red Cells ◽  
Gel Chromatography ◽  
Handicapped Children ◽  
Silica Gel Chromatography ◽  
Physically Handicapped

Phospholipids from the red cells of 85 children, both normal and belonging to various clinical groups, have been extracted and subjected to silica gel chromatography. The several phospholipids have been quantitated. The results have not proved to be useful in diagnosis and hence do not confirm earlier reports. The problems associated with analysis of phospholipids by this type of method are discussed.

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