Effective Homogeneous Hydrolysis of Phosphodiester and DNA Cleavage by Chitosan-copper Complex

2011 ◽  
Vol 29 (4) ◽  
pp. 711-718 ◽  
Author(s):  
Qi Zhang ◽  
Yan Xiang ◽  
Ruxin Yang ◽  
Jiangju Si ◽  
Hong Guo
Keyword(s):  
Copper Complex ◽  
Dna Cleavage ◽  
Hydrolysis Of ◽  
Homogeneous Hydrolysis

Homogeneous hydrolysis of 4,4’-Methylenediphenyl diisocyanate (MDI) in water

2021 ◽  
pp. 1-18
Author(s):  
Michael Neuland ◽  
Hans Allmendinger ◽  
Hans-Georg Pirkl ◽  
Robert J. West ◽  
Patrick M. Plehiers
Keyword(s):  
Methylenediphenyl Diisocyanate ◽  
Hydrolysis Of ◽  
Homogeneous Hydrolysis

On the Brønsted Acid-Catalyzed Homogeneous Hydrolysis of Furans

ChemSusChem ◽  
2013 ◽  
Vol 6 (11) ◽  
pp. 2066-2068 ◽  
Author(s):  
Nima Nikbin ◽  
Stavros Caratzoulas ◽  
Dionisios G. Vlachos
Keyword(s):  
Bronsted Acid ◽  
Brønsted Acid ◽  
Brönsted Acid ◽  
Acid Catalyzed ◽  
Hydrolysis Of ◽  
Homogeneous Hydrolysis

scholarly journals (255) Homogeneous Hydrolysis of Chlorinated n-Heptane. (Chlorinated Petroleum.VIII).

1955 ◽  
Vol 58 (10) ◽  
pp. 790-795
Author(s):  
Taiseki Kunugi ◽  
Hiroshi Okada ◽  
Hideo Arai ◽  
Hisashi Machimoto
Keyword(s):  
Hydrolysis Of ◽  
Homogeneous Hydrolysis

CONSTITUTION OF AN ARABOGALACTAN FROM JACK PINE (PINUS BANKSIANA LAMB)

1957 ◽  
Vol 35 (9) ◽  
pp. 1010-1019 ◽  
Author(s):  
C. T. Bishop
Keyword(s):  
Methyl Ether ◽  
Pinus Banksiana ◽  
Jack Pine ◽  
Degree Of Polymerization ◽  
Average Degree ◽  
Water Soluble ◽  
Molar Ratio ◽  
Hydrolysis Of ◽  
Homogeneous Hydrolysis

A water soluble arabogalactan isolated from jack pine was shown to have a molar ratio of arabinose to galactose of 1:13, and a number average degree of polymerization of 53 ± 3. Fractionation data and electrophoresis indicated that the arabogalactan was homogeneous. Hydrolysis of the methyl ether of the polysaccharide yielded 2,3,5-tri-O-methyl-L-arabinose (4 moles); 2,3,4,6-tetra-O-methyl-D-galactose (12–13 moles); 2,3,4-tri-O-methyl-D-galactose (19 moles); 2,6-di-O-methyl-D-galactose (1 mole); and 2,4-di-O-methyl-D-galactose (14 moles). Some features of the structure of the arabogalactan are discussed on the basis of these results.

THE WATER-SOLUBLE POLYSACCHARIDES OF DERMATOPHYTES: III. A GALACTOMANNAN FROM TRICHOPHYTON INTERDIGITALE

1964 ◽  
Vol 42 (12) ◽  
pp. 2862-2871 ◽  
Author(s):  
F. Blank ◽  
M. B. Perry
Keyword(s):  
Formic Acid ◽  
Acid Hydrolysis ◽  
Copper Complex ◽  
Periodate Oxidation ◽  
Water Soluble ◽  
Mild Acid Hydrolysis ◽  
Trichophyton Interdigitale ◽  
Soluble Polysaccharide ◽  
Hydrolysis Of ◽  
Mild Acid

The water-soluble polysaccharide preparation from Trichophytoninterdigitale was fractionated to give two distinct galactomannans and a glucan. A galactomannan isolated via its insoluble copper complex had [α]D +75° (water) and was composed of D-galactose (12%) and D-mannose (88%). On periodate oxidation, the galactomannan consumed 1.73 mole periodate and released 0.67 mole formic acid and 0.12 mole formaldehyde per anhydrohexose unit. Hydrolysis of the methylated galactomannan gave 2,3,5,6-tetra-O-methyl-D-galactose (1 part), 2,3,4,6-tetra-O-methyl-D-mannose (1 part), 2,3,4-tri-O-methyl-D-mannose (4 parts), and3,4-di-O-methyl-D-mannose (2 parts). Mild acid hydrolysis of the galactomannan removed all the galactose residues, leaving a mannan having [α]D +84° (water) whose structure was analyzed by periodate oxidation and methylation techniques.

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