Concept explainers
(a)
Interpretation: The given cyclic monosaccharide is to be converted into a Fischer projection of its acyclic form.
Concept introduction: In the Fisher projection formula, a stereogenic centre is located at intersection of the two lines. The horizontal and vertical bonds are denoted by wedges and dashed wedges.
(b)
Interpretation: The name of the given monosaccharide is to be predicted.
Concept introduction: The anomers are cyclic monosaccharides which are differ in configuration at
(c)
Interpretation: The anomer of given monosaccharide is to be labeled as
Concept introduction: The anomers are cyclic monosaccharides which are differ in configuration at
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Organic Chemistry
- a) Draw Haworth projections of both - and -anomers of D-fructose. Indicate which carbon is the anomeric carbon.b) Sucrose is a disaccharide made up of a molecule of D-fructose and D-glucose. Draw the structure of sucrose clearly indicating the linkage between the two monosaccharides and its biological significance.c) Tollen’s reagent is a very mild oxidizing agent which normally oxidize aldehydes but not ketones. However, both glucose and fructose give positive results with Tollen’s reagent and are classified as reducing sugars. Explain how fructose can also give positive results with Tollen’s reagent (illustrate using structures).arrow_forward(A) Identify the glycosidic bond in the following disaccharide (B) Decide whether the compound is a non reducing or reducing sugar (C) Polysaccharide units are usually bonded together with alpha or beta 1,6 or 1,4 linkages. What linkage is used in the disaccharide shown below?arrow_forwardDraw the structure of: (a) a polysaccharide formed by joining D-mannose units in 1->4-ß-glycosidic linkages; (b) a polysaccharide formed by joining D-glucose units in 1->6-a-glycosidic linkages. The polysaccharide in (b) is dextran, a component of dental plaque.arrow_forward
- Lactose is a disaccharide composed of a 1-4 glycosidic bondbetween galactose and glucose.A) Is lactose a reducing sugar? B) Label the glucose and galactose rings on the lactose structure to theright. C) Circle the anomeric positions. Circle oneThe anomeric position of the acetal is Alpha BetaThe anomeric position of the hemiacetal is Alpha BetaD) What is the relationship between glucose and galactose? E) Give a specific acid mechanism hydrolyzing lactose into glucoseand galactose. Show lone pairs on the oxygen atoms directly involved in each step, show formal charges, correctly use arrows, and do not skip steps.arrow_forwardStructures of monosaccharides are a) polymers b) pyranoses or furanoses c) aldoses or ketoses d) B and Carrow_forwarda) Draw structural formulas for the two monosaccharides that result when structure III istreated as shown below. (b) Draw the monosaccharide that results when product A from the previous step (Q1a) istreated with Br2/H2O. (c) Draw the monosaccharide that results when product A from the previous step (Q1a) istreated with 1.NaBH4 / 2. H2O.arrow_forward
- Identify the glycosidic bond in the following disaccharide. (b) Decide whether the compound is a non-reducing or reducing sugar. (c) Polysaccharide units are usually bonded together with a or b 1, 6 or 1, 4 linkages. What linkage is used in the disaccharide shown below?arrow_forwardJust little explanation Asap Thanksarrow_forward(a) Draw the condensed structural formula, and give the name for the dipeptide Pro-Asn. (b) Draw the disaccharide formed by the following two monosaccharide via 1,4-linkage. In your disaccharide structure, circle and label the anomeric carbon and indicate whether you have an alpha (a) or a beta (B) anomer. CH2OH CH₂OH ОН ОН ОН ОН, ОН ОН ОН ОНarrow_forward
- Good explanation asap Thanksarrow_forwardGive proper explanation and if possible don't upload any image. Hand written solutions are strictly prohibited.arrow_forwardAmygdalin is a toxic component in the pits of bitter almonds, peaches, and apricots. Q.) Name the two monosaccharide units in amygdalin and describe the glycosidic bond by which they are joined.arrow_forward
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