The lowest asymmetric carbon atom is considered for assigning the configuration of monosaccharides. In glucose, for example, the comparison is made based on the position of the -OH group on the lowest asymmetric carbon, comparing it to the corresponding position ...
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‘D’ and ‘L’ notations in carbohydrate nomenclature indicate the relative configuration of a stereoisomer concerning the known configuration of glyceraldehyde. Compounds chemically correlated to the D isomer of glyceraldehyde are assigned D-configuration, and those correlated to the L isomer are ...
The ‘D’ in D(+)-glucose represents its configuration, specifically indicating its relation to the D isomer of glyceraldehyde. It is not directly related to the optical activity of the compound, which is denoted by the ‘(+)’ symbol representing its dextrorotatory nature.
Glucose’s reaction with hydroxylamine to form an oxime, addition of hydrogen cyanide to give cyanohydrin, and oxidation to form gluconic acid with bromine water all confirm the presence of a carbonyl group (>C = O) as an aldehydic group in ...
The structure of glucose was determined based on evidence such as its molecular formula (C₆H₁₂O₆), formation of n-hexane upon prolonged heating with HI, reactions with hydroxylamine and hydrogen cyanide confirming the carbonyl group, oxidation to gluconic acid, and acetylation yielding ...