Carbohydrates Chapter 22

Carbohydrates - Ch Classify and give the IUPAC name for the following sugars:

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

Carbohydrates - Ch What’s the relationship between D-mannose and D- glucose?

Carbohydrates - Ch Predict the products and determine if optically active or inactive: A. B.

Carbohydrates - Ch Draw and name an aldohexose that will get reduced to the same alditol as D-talose.

Carbohydrates - Ch Predict and name the products:

Carbohydrates - Ch Compare and name the products for the oxidation of D-mannose with Br 2 in water verses the oxidation with nitric acid (HNO 3 ).

Carbohydrates - Ch Draw and name two D-aldohexoses that will produce an optically inactive aldaric acid upon oxidation with HNO 3.

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

Carbohydrates - Ch Ketones will not get oxidized by Tollens’ reagent (Ag +, NH 3, OH - ) however ketoses will get oxidized. Explain. Predict the products for D-fructose with Tollens reagent.

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

Carbohydrates - Ch Predict the products.

Carbohydrates - Ch Predict the products. What other sugar will produce the same product?

Carbohydrates - Ch 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.

Carbohydrates - Ch 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

Carbohydrates - Ch Explain mutarotation

Carbohydrates - Ch Predict and name the products:

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

Carbohydrates - Ch Name four disaccharides and describe the differences between them

Carbohydrates - Ch Name four polysaccharides and describe the differences between them

Carbohydrates - Ch. 22