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 (8th Edition)
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- Draw the structure of the following:a. D/L-glucose & D/L-fructoseb. α/β-D-glucopyranose & α/β-D-fructopyranosec. α/β-D-glucofuranose & α/β-D-fructofuranosearrow_forwarda. Draw a three-dimensional structure for the following steroid. b. What is the structure of the single stereoisomer formed by reduction of this ketone with H2, Pd-C? Explain why only one stereoisomer is formed.arrow_forwardWhat is the glycosidic linkage present in the dissacharide? A. α-(1→6)-α B. β-(2→1)-α C. α-(1→6)-β D. α-(2→1)-βarrow_forward
- 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_forwarda. 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_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
- Draw β-d-psicofuranose :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_forwardAnswer the following questions about the eight aldopentoses: a. Which are enantiomers? b. Which are C-2 epimers? c. Which form an optically active compound when oxidized with nitric acid?arrow_forward
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