ChemInform Abstract: Oxidation Products of C-4 and C-7 Hydroxyls in the Methyl α- Glycoside Derivatives of KDN.

ChemInform ◽  
2010 ◽  
Vol 28 (44) ◽  
pp. no-no
Author(s):  
T. KAI ◽  
X.-L. SUN ◽  
H. TAKAYANAGI ◽  
K. FURUHATA
Keyword(s):  
Oxidation Products ◽  
Derivatives Of

scholarly journals New Derivatives of Tylosin: Chemical and Electrochemical Oxidation Products of Desmycosin.

2002 ◽  
Vol 55 (9) ◽  
pp. 807-813 ◽  
Author(s):  
Z. MANDIC ◽  
A. NARANDA ◽  
P. NOVAK ◽  
K. BRAJŠA ◽  
M. DEREK ◽  
...  
Keyword(s):  
Electrochemical Oxidation ◽  
Oxidation Products ◽  
Derivatives Of

Oxidation Products of C-4 and C-7 Hydroxyls in the Methyl α-Glycoside Derivatives of KDN1

1997 ◽  
Vol 16 (4-5) ◽  
pp. 533-540 ◽  
Author(s):  
Toshitsugu Kai ◽  
Xue-Long Sun ◽  
Hiroaki Takayanagi ◽  
Kimio Furuhata
Keyword(s):  
Oxidation Products ◽  
Derivatives Of

New Derivatives of Tylosin: Chemical and Electrochemical Oxidation Products of Desmycosin.

ChemInform ◽  
2003 ◽  
Vol 34 (10) ◽  
Author(s):  
Z. Mandic ◽  
A. Naranda ◽  
P. Noval ◽  
K. Brajsa ◽  
M. Derek ◽  
...  
Keyword(s):  
Electrochemical Oxidation ◽  
Oxidation Products ◽  
Derivatives Of

THE ULTRAVIOLET ABSORPTION SPECTRA OF SEVERAL DEHYDRATION AND OXIDATION DERIVATIVES OF CHOLESTEROL

1951 ◽  
Vol 29 (5) ◽  
pp. 398-408 ◽  
Author(s):  
R. H. Cox ◽  
E. Y. Spencer
Keyword(s):  
Absorption Spectra ◽  
Wave Length ◽  
Animal Experimentation ◽  
Ultraviolet Absorption ◽  
Oxidation Products ◽  
Length Range ◽  
Enol Acetate ◽  
Enol Esters ◽  
Derivatives Of

Certain dehydration and oxidation products of cholesterol were prepared for subsequent animal experimentation. The ultraviolet absorption spectra of those derivatives possessing two or more conjugate chromophores were determined spectrophotometrically over the wave length range of 220 mμ to 350 mμ. The relative coincidence of the experimental λmax and εmax values of cholestadiene-3, 5 and of the enol acetate of cholesten–4–one–3 is offered as support for a 3, 5-diene structure for the latter steroid in particular and for enol esters of 4,5-unsaturated 3-ketosteroids in general.

Oxidized Derivatives of Lipophilic Extractives Formed during Hardwood Kraft Pulp Bleaching

Holzforschung ◽  
2003 ◽  
Vol 57 (5) ◽  
pp. 503-512 ◽  
Author(s):  
C. S. R. Freire ◽  
A. J. D. Silvestre ◽  
C. Pascoal Neto
Keyword(s):  
Hydrogen Peroxide ◽  
Chlorine Dioxide ◽  
Kraft Pulp ◽  
Structural Changes ◽  
Oxidation Products ◽  
Pulp Bleaching ◽  
Peroxide Bleaching ◽  
Kraft Pulp Bleaching ◽  
First Time ◽  
Derivatives Of

Summary The structural changes of E. globulus wood extractives during bleaching with chlorine dioxide (D), oxygen (O), ozone (Z) and hydrogen peroxide (P) were studied. The detailed characterisation of the extractive derivatives detected in the partially bleached D, O, P and Z pulps was achieved by performing reactions of pure reference compounds with the different bleaching agents. The results show that the unsaturated sterols and fatty acids are extensively degraded during chlorine dioxide and ozone bleaching and only partially degraded during oxygen and hydrogen peroxide bleaching. The corresponding saturated extractives as well as the long chain aliphatic alcohols and ω-hydroxyfatty acids were stable during bleaching. The main oxidation products of β-sitosterol and oleic and linoleic acids, including one chlorinated derivative of linoleic acid, were identified here for the first time in E. globulus bleached pulps and bleaching filtrates.

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