Glucose acids

Deshmukh et al. [134] have investigated the use of D-(+)-glucose derived chiral ketenes in the stereoselective synthesis of spiro-(3-lactams 226-227. The D-(+)-glucose acid chloride 224, serving as a ketene precursor, in the Staudinger cycloaddition reaction with appropriate imines 225 afforded the diastereomeric mixture of spirocyclic-(3-lactams 226-227 in 70 30 ratio, respectively. This reaction has cleanly produced only two diastereoisomers instead of theoretically possible four... 

Ellagitannins are characterized by the presence of hexahydroxydiphenoyl esters (HHDP 1.94) with a polyol such as glucose. Acid hydrolysis of ellagitannins will result in the release of HHDP units, which will spontaneously form ellagic acid (1.96), as described in Chapter 1, section 3.13.3. Hence, the quantification of ellagic acid reflects the content of ellagitannins present in the sample. 

Hydrobutyric acid Fructose, glucose, acids Alcaligenes eutrophus Aspergillus griseus... 

Figure 4. Cyclic voltammogram of glucose oxidase encapsulated ormosil in absence (1) and the presence (2) of 150 mM glucose acid in 0.1 M phosphate buffer pH 7.1 containing 5 mM ferrocene monocarboxylic acid at the scan rate of 5 mV/s.

Sorbitol, a hygroscopic alcohol, is approximately half as sweet as sucrose. It is used as a sweetener for diabetics and in food canning. Sorbitol can be produced on a commercial scale by catalytic hydrogenation of glucose. Acid-catalyzed elimination of water yields a mixture of 1,4-sorbitan (85%, I) and 3,6-sorbitan (15%, II). Under more drastic conditions (action of concentrated acids), I,4 3,6-dianhydrosorbitol (isosorbid III) is formed (Formula 19.2). 

Intestine Pancreatic juice. Alkaline pH 8-10. Trypsin. Erepsin. Amylase. Maltese. Lipase. Proteins. Peptides. Starch, etc. Maltose. Fats. Peptides. Amino acids. Maltose. Glucose. Acid -1- glycerol. 

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