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Carbohydrates

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Carbohydrates Chapter 22 Carbohydrates - Ch. 22 1. Classify and give the IUPAC name for the following sugars: Carbohydrates - Ch. 22 2. What is the relationship ... – PowerPoint PPT presentation

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Title: Carbohydrates


1
Carbohydrates
  • Chapter 22

2
Carbohydrates - Ch. 22
  • 1. Classify and give the IUPAC name for the
    following sugars

3
Carbohydrates - Ch. 22
  • 2. What is the relationship between D and L
    glucose?
  • a. Enantiomers
  • b. Diastereomers
  • c. Epimers
  • d. Structural isomers

4
Carbohydrates - Ch. 22
  • 3. Whats the relationship between D-mannose and
    D-glucose?

5
Carbohydrates - Ch. 22
  • 4. Predict the products and determine if
    optically active or inactive

B.
A.
6
Carbohydrates - Ch. 22
  • 5. Draw and name an aldohexose that will get
    reduced to the same alditol as D-talose.

7
Carbohydrates - Ch. 22
  • 6. Predict and name the products

8
Carbohydrates - Ch. 22
  • 7. Compare and name the products for the
    oxidation of D-mannose with Br2 in water verses
    the oxidation with nitric acid (HNO3).

9
Carbohydrates - Ch. 22
  • 8. Draw and name two D-aldohexoses that will
    produce an optically inactive aldaric acid upon
    oxidation with HNO3.

10
Carbohydrates - Ch. 22
  • 9. Draw and name a sugar that will form the same
    aldaric acid as D-arabinose.

11
Carbohydrates - Ch. 22
  • 10. Ketones will not get oxidized by Tollens
    reagent (Ag, NH3, OH-) however ketoses will get
    oxidized. Explain. Predict the products for
    D-fructose with Tollens reagent.

12
Carbohydrates - Ch. 22
  • 11. Draw the osazone for D-glucose. What other
    sugars will form the same osazone?

13
Carbohydrates - Ch. 22
  • 12. Predict the products.

14
Carbohydrates - Ch. 22
  • 13. Predict the products. What other sugar will
    produce the same product?

15
Carbohydrates - Ch. 22
  • 14. Aldohexoses A and B form the same osazone.
    Compound A is oxidized by nitric acid to an
    optically active aldaric acid, and compound B is
    oxidized to an optically inactive aldaric acid.
    Wohl degradation of either A or B forms
    aldopentose C, which is oxidized by nitric acid
    to an optically active aldaric acid. Wohl
    degradation of C forms D, which is oxidized by
    nitric acid to an optically active aldaric acid.
    Wohl degration of D forms ()-glyceraldehyde.
    Identify A, B, C and D.

16
Carbohydrates - Ch. 22
  • 15. Draw and name the alpha and beta Haworth and
    chair conformers for the following sugars.
  • a. D-glucose
  • b. D-mannose
  • c. L-galactose
  • d. D-ribose
  • e. D-fructose

17
Carbohydrates - Ch. 22
  • 16. Explain mutarotation

18
Carbohydrates - Ch. 22
  • 17. Predict and name the products

19
Carbohydrates - Ch. 22
  • 18. What does it mean to be a reducing sugar?
    Which of the following are considered reducing
    sugars?

20
Carbohydrates - Ch. 22
  • 19. Name four disaccharides and describe the
    differences between them

21
Carbohydrates - Ch. 22
  • 20. Name four polysaccharides and describe the
    differences between them

22
Carbohydrates - Ch. 22
23
Carbohydrates - Ch. 22
24
Carbohydrates - Ch. 22
25
Carbohydrates - Ch. 22
26
Carbohydrates - Ch. 22
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