Concept explainers
a)
Interpretation:
The structure of the given sugar
Concept Introduction:
Haworth projections are used to represent the cyclic structures of the monosaccharides. In other words,
“A common way of writing a structural formula to represent the cyclic structure of monosaccharide with a simple three-dimensional perspective is called Haworth projection”.
b)
Interpretation:
The structure of the given sugar
Concept Introduction:
Haworth projections are used to represent the cyclic structures of the monosaccharides. In other words,
“A common way of writing a structural formula to represent the cyclic structure of monosaccharide with a simple three-dimensional perspective is called Haworth projection”.
c)
Interpretation: The structure of the given sugar
Concept Introduction:
Haworth projections are used to represent the cyclic structures of the monosaccharides. In other words,
“A common way of writing a structural formula to represent the cyclic structure of monosaccharide with a simple three-dimensional perspective is called Haworth projection”.
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Chapter 20 Solutions
Organic Chemistry, Books a la Carte Plus Mastering Chemistry with Pearson eText -- Access Card Package (8th Edition)
- Draw the α-d-tagatopyranose sugars using Haworth projections:arrow_forwardHow would you convert D-glucose to each compound? More than onestep is required.arrow_forward2. Write: why saccharose is a non-reducing disaccharide. 3. Write the equations of reactions:3.1 glucose +Ag2O(NH3)→;3.2 glucose +H2→;3.3 α-D-glucopyranose +CH3OH(HCl)→;3.4 β-D-glucopyranose +(CH3CO)2O→;3.5 maltose hydrolysis;3.6 glucaric acid formation from glucose.arrow_forward
- Write the haworth projection for (A) B_D_glucofuranose (B) a_D_frotopyranosearrow_forwardDraw the Fischer projections (D-isomer) of Arabinose and Mannose. Draw the Haworth projections of α-Arabinose and β-Mannose. Draw the structure of β-D-mannopyranosyl-(2→4)-α-D-arabinofuranoside.arrow_forwardTrue or False 1. Mutarotation affects the reducing property of carbohydrates. 2. Anthrone test can be use to test for the helical configuration of a polysaccharide. 3. Upon treatment with phenylhydrazine reagent & hydrolysis, maltose gives glucuronic acid and glucosazone.arrow_forward
- How would you convert D-glucose to each compound? More than one step is required.arrow_forward1. Carbohydrates classification. 2. Write down the reactions: a) α,D-Glucopyranose + C2H5OH → b) D-Glucose + [Ag(NH3)2]+ → c) D-Glucopyranose + (CH3CO)2 O → d) D-Glucopyranose + CH3I → e) D-Glucose + HNO3 → f) D-Glucose + H2 → g) Lactose formation h) Sucrose hydrolysis 3. Write down the formula of β,D-galactopyranosearrow_forwardDraw a Haworth projection for each compound using the structures. α-D-galactopyranosearrow_forward
- Stachyose is an oligosaccharide found in high concentrations of beans. Stachyose is composed of alpha-D-galactopyranosyl-(1-6)-alpha-D-galactopyranosyl-(1-6)-alpha-D-glucopyranosyl-(1-2)beta-D- fructofuranose . Draw the structure of stachyose using Haworth projections.arrow_forward(d) Use the diagram below to complete the cyclic alpha form of structure V (e) Circle the hemiacetal in cyclic alpha form of structure V. (f) Redraw the cyclic alpha form of structure V but replace the OH group on the anomericcarbon with a methoxy group. Is this modified monosaccharide a reducing sugar or anonreducing sugar?arrow_forwarddraw a haworth structure of fructose as a 5 membered ring in the b form, and as a 6-membered ring in the a formarrow_forward