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CH;OH но- H- H- CH;OH Draw L-fructose here a-D fructofuranose B-D fructofuranose Draw Sucrose: a-D-glucosyl-(1,2)- B-D-fructofuranose (D-glucose is given below) H- OH но- H- он H- OH ČH,OH D-glucose

CH;OH но- H- H- CH;OH Draw L-fructose here a-D fructofuranose B-D fructofuranose Draw Sucrose: a-D-glucosyl-(1,2)- B-D-fructofuranose (D-glucose is given below) H- OH но- H- он H- OH ČH,OH D-glucose

Biochemistry
Biochemistry
9th Edition
ISBN:9781319114671
Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Chapter1: Biochemistry: An Evolving Science
Section: Chapter Questions
Problem 1P
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s) This is a Fish er projecti on of D-f ructose (Fisher projecti on of L-F ructose ). Dra w L-fructose. Inaddition, draw the Haworth projection of a-D fructofuranose and b-D fructofuranose, the cyclic form ofthis monosaccharide. Draw sucrose where indicated below (Haworth projection).

### Educational Resource: Structure of Sugars **Section 1: Fructose Representation** - The chemical structure shown at the top displays the linear form of fructose. - From top to bottom, the structure includes a hydroxymethyl group (CH₂OH) followed by a ketone (C=O) and several hydroxyl groups (OH) attached to a chain of carbon atoms. - **Instruction:** - **Draw L-fructose here:** Indicating a task to convert or draw this molecule in its L-form. **Section 2: Fructofuranose Forms** - Two distinct forms of fructofuranose are to be drawn: - **α-D fructofuranose** - **β-D fructofuranose** These refer to different stereoisomers of the furanose ring form of fructose, with differences in the orientation of the OH group at a specific carbon. **Section 3: Sucrose** - **Draw Sucrose:** - The instruction is to draw the sucrose molecule which is an α-D-glucosyl-(1,2)-β-D-fructofuranose linkage. - Noted beneath is the D-glucose structure provided as a reference. - **D-glucose Structure:** - Illustrated below the instruction, showing the classic six-carbon glucose chain with hydroxyl groups in various orientations. - From top to bottom, it consists of an aldehyde (O=CH) followed by a sequence of hydroxyl groups (OH) attached to a carbon chain, ending in a hydroxymethyl group (CH₂OH). These structural formulas and instructions are fundamental for understanding the chemical structures and isomerism of sugars, which are essential for topics in biochemistry and organic chemistry.
Transcribed Image Text:### Educational Resource: Structure of Sugars **Section 1: Fructose Representation** - The chemical structure shown at the top displays the linear form of fructose. - From top to bottom, the structure includes a hydroxymethyl group (CH₂OH) followed by a ketone (C=O) and several hydroxyl groups (OH) attached to a chain of carbon atoms. - **Instruction:** - **Draw L-fructose here:** Indicating a task to convert or draw this molecule in its L-form. **Section 2: Fructofuranose Forms** - Two distinct forms of fructofuranose are to be drawn: - **α-D fructofuranose** - **β-D fructofuranose** These refer to different stereoisomers of the furanose ring form of fructose, with differences in the orientation of the OH group at a specific carbon. **Section 3: Sucrose** - **Draw Sucrose:** - The instruction is to draw the sucrose molecule which is an α-D-glucosyl-(1,2)-β-D-fructofuranose linkage. - Noted beneath is the D-glucose structure provided as a reference. - **D-glucose Structure:** - Illustrated below the instruction, showing the classic six-carbon glucose chain with hydroxyl groups in various orientations. - From top to bottom, it consists of an aldehyde (O=CH) followed by a sequence of hydroxyl groups (OH) attached to a carbon chain, ending in a hydroxymethyl group (CH₂OH). These structural formulas and instructions are fundamental for understanding the chemical structures and isomerism of sugars, which are essential for topics in biochemistry and organic chemistry.
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