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 21 Solutions
Organic Chemistry
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- From the choices given below select the aldohexose that yields the same alditol as L-mannose upon reduction with NaBH4. Select ALL monosaccharides that satisfy the requirement, excluding the structure referenced in the question. Note that only D structures are shown. To select an L structure click on the name. If no selection exists, then select the referenced structure. H H- H H CHO -OH HO- -OH H -OH H -OH H CH₂OH D-Allose L-Allose CHO -H H OH HO- -OH H -OH H- CH₂OH D-Altrose L-Altrose CHO CH₂OH D-Glucose CHO OH HO -H -H HO- -H H- OH H -OH HO- -OH H-+ OH H L-Glucose CH₂OH D-Mannose H- L-Mannose CHO OH OH H -H HO OH H- CH₂OH D-Gulose L-Gulose HO CHO -H H- -OH HO- -H HO- -OH H CH₂OH D-Idose L-Idose CHO OH HO -H HO- -H HO -OH CH₂OH D-Galactose L-Galactose H- CHO -H -H -H -OH CH₂OH D-Talose L-Talosearrow_forwardDraw β-d-psicofuranose :arrow_forwardWhat reaction is responsible for the conversion of linear d-glucose to cyclic d-glucose? A. Reduction reaction B. Oxidation reaction C. Hydrolysis reaction D. Hemiacetal reactionarrow_forward
- a. How many stereogenic centers are present in α-D-galactose? b. Label the hemiacetal carbon in α-D-galactose. c. Draw the structure of β-D-galactose. d. Draw the structure of the polyhydroxy aldehyde that cyclizes to α- and β-D-galactose.arrow_forwardWhich pairs of molecules are interconvertible via mutarotation? O a. D-glucose and D-fructose O b. D-glucose and D-galactose O c. D-glucose and D-glucosamine O d. a-D-glucose and B-D-glucosearrow_forward4. Classify each of the following sugars with the following a. D or L b. Alpha or Beta c. Pyranose or Furanose HO 6 5 4 OH HO OH 3 OH HO H CH₂OH O OH H HO OH H H CH₂OH FO HO -H H- OH H OH CH₂OH (Would it be a Pyranose or Furanose in closed form?) HOH₂C H HH H OH OHarrow_forward
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