ACTIVITY-4. Refer to the structures below. Draw the Haworth formula (pyranose) H- OH но H- OH H- FOH но но H- FOH H- H- ČH2OH CH2OH Alpha-D- glucopyranose Beta-D-glucopyranose Alpha-D- glucopyranose (Haworth) Beta-D-glucopyranose (Haworth)

Introduction to General, Organic and Biochemistry
11th Edition
ISBN:9781285869759
Author:Frederick A. Bettelheim, William H. Brown, Mary K. Campbell, Shawn O. Farrell, Omar Torres
Publisher:Frederick A. Bettelheim, William H. Brown, Mary K. Campbell, Shawn O. Farrell, Omar Torres
Chapter20: Carbohydrates
Section: Chapter Questions
Problem 20.82P
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ACTIVITY-4. Refer to the structures below. Draw the Haworth formula (pyranose)
-OH
но
H-
FOH
FOH-
но
но
H-
H
FOH
H
FOH-
H-
CH2OH
CH2OH
Alpha-D-
glucopyranose
Beta-D-glucopyranose
(Haworth)
Beta-D-glucopyranose
Alpha-D-
glucopyranose
(Haworth)
ACTIVITY-5. Draw the Haworth formula for D-mannose and D-galactose. Label the alpha and beta
anomer.
CYCLIC FORMS OF FRUCTOSE
D-fructose, a ketohexose sugar, can be presented using furanose and pyranose.
Cyclic Fisher (furanose)
1
2OH
Open chain Fisher
Haworth formula (furanose)
1 CH2OH
HOH,C-
1
2 F0
НО
3_H.
ÇH2OH
ÇH2OH
но з—н
4
H-
H
но
2
H-4
HO-
H-
5.
OH
13
H-5 FOH
6 CH,OH
14
OH
H.
6 CH2OH
D-fructose
Alpha form
Alpha form
Cyclic Fisher (pyranose)
Haworth formula (pyranose)
1
HOH2C-2
3.
1
HO-
CH2OH
Но
H.
5
он
2
H-4
HO-
Но
4
OH
3
H-5
FHO-
OH
H-6
H
Alpha form of D-fructose
Alpha form of D-fructose
ACTIVITY-6. Draw the Fisher and Haworth formula for beta-D-fructose (furanose and pyranose
form). Label the beta furanose and beta pyranose.
Transcribed Image Text:ACTIVITY-4. Refer to the structures below. Draw the Haworth formula (pyranose) -OH но H- FOH FOH- но но H- H FOH H FOH- H- CH2OH CH2OH Alpha-D- glucopyranose Beta-D-glucopyranose (Haworth) Beta-D-glucopyranose Alpha-D- glucopyranose (Haworth) ACTIVITY-5. Draw the Haworth formula for D-mannose and D-galactose. Label the alpha and beta anomer. CYCLIC FORMS OF FRUCTOSE D-fructose, a ketohexose sugar, can be presented using furanose and pyranose. Cyclic Fisher (furanose) 1 2OH Open chain Fisher Haworth formula (furanose) 1 CH2OH HOH,C- 1 2 F0 НО 3_H. ÇH2OH ÇH2OH но з—н 4 H- H но 2 H-4 HO- H- 5. OH 13 H-5 FOH 6 CH,OH 14 OH H. 6 CH2OH D-fructose Alpha form Alpha form Cyclic Fisher (pyranose) Haworth formula (pyranose) 1 HOH2C-2 3. 1 HO- CH2OH Но H. 5 он 2 H-4 HO- Но 4 OH 3 H-5 FHO- OH H-6 H Alpha form of D-fructose Alpha form of D-fructose ACTIVITY-6. Draw the Fisher and Haworth formula for beta-D-fructose (furanose and pyranose form). Label the beta furanose and beta pyranose.
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