Concept explainers
(a)
Interpretation:
To determine the given Haworth structure as a or the ß form.
Concept Introduction :
D- Galactose is a monosaccharide with the chemical formula C6H12O6. A Haworth structure is a common way to write the structural formula of a given monosaccharide in the cyclic form with a simple 3-D perspective. It is an aldohexose just like D-glucose but it differs in the arrangement of hydroxyl group at carbon number 4. The beta position in case of D-galactose refers to the projection of -OH group above the plane of the ring. This occurs when -OH group is present on the same side of the ring as carbon number 6. Alpha configuration, on the other hand can be observed when there is downward projection of hydroxyl group and this happens due to -OH group when present on the opposite side of the ring just like carbon number 6.
(b)
Interpretation:
To determine the given Haworth structure as a or the ß form.
Concept Introduction :
D- Galactose is a monosaccharide with the chemical formula C6H12O6.A Haworth structure is a common way to write the structural formula of a given monosaccharide in the cyclic form with a simple 3-D perspective. It is an aldohexose just like D-glucose but it differs in the arrangement of hydroxyl group at carbon number 4. The beta position in case of D-galactose refers to the projection of -OH group above the plane of the ring. This occurs when -OH group is present on the same side of the ring as carbon number 6. Alpha configuration, on the other hand can be observed when there is downward projection of hydroxyl group and this happens due to -OH group when present on the opposite side of the ring just like carbon number 6.
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Basic Chemistry
- Based on your knowledge of Fischer projections and of Haworth structures, draw the two closed structures for the sugar represented by this Fischer projection as Haworth structures. By hand, draw the requested information.arrow_forwardFor each of the following disaccharides, circle the glycosidic linkage and indicate the type of glycosidic linkage:arrow_forwardIdentify the organic functional group and reaction type for the following reaction. The reactants is a(n) - disaccharide - ester - ether - two hemiacetals - alcohol pryranoses The product is a(n) - alpha 1-2 disaccharide - two hemiacetals - alcohol pyramides - beta 1-4 disaccharide - alpha 1-6 disaccharide - beta 1-2 disaccharide -beta 1-6 disaccharide -alpha 1-4 disaccharide The reaction type is - mutarotation - oxidation ( Benedict’s ) - hydrolysis - reduction ( hydrogenation) - acetal formation -hemiacetal formationarrow_forward
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