Carbohydrate Practice

• According to the method used to classify monosaccharides, D-Ribulose is a (an)

a. aldotetroseb. aldopentosec. aldohexosed. ketotetrosee. ketopentoseCH2OH

C O

C OHH

C OHH

CH2OH

Carbohydrate Practice

• According to the method used to classify monosaccharides, the monosaccharide in the box in sucrose in the cyclic form is a (an)

a. pyranoseb. furanosec. a- glycosided. b-glycosidee. pyran

OHOHO

CH2OH

HO

O O

HO

OH

OH

OH

Carbohydrate Practice

• The structure of antithrombin-III binding domain of heparin is provided. Which bond is a b-glycosidic bond?

OHO

OSO3-

-O3SHN

OOHO

HO

OO

OO

-O3SO

OSO3-

O

-O3SOHN

O

O

O

-O3SO

OHO

OHO

OSO3-

-O3SHN

OA B

C

D

E

Carbohydrate Practice

• Which of the following is not a reactive intermediate that forms in the mechanism for the hydrolysis of b-methylglucopyranoside?

OHOHO

HO

CH2OH

OCH3

excess H2O , H+

OHOHO

HO

CH2OH

OH

+ CH3OH

OHOHO

HO

CH2OH

O

H

CH3

A BOHO

HO

HO

CH2OH

OCH3

H

C

OHOHO

HO

CH2OH

OH H

DOHO

HO

HO

CH2OH

EOHO

HO

HO

CH2OH