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Cyclic forms of D-glucose: Haworth formula The furanose and pyranose forms of D-glucose can be presented using Haworth formula. The following templates are used for this formula. Note the numbering of the carbon atoms and the anomeric carbon (this carbon defines the alpha and beta isomer). Furanose template (furan) Pyranose template (pyran) anomeric carbon anomeric carbon Compare the Fisher and Haworth formula of D-glucofuranose and D-glucopyranose. Notice that the groups attached to C-1, C-2, and C-3 on the left side of the Fisher formula are written above the plane of the furanose template. Fisher formula Haworth formula H FOH H-2FOH 0 HOH,Č 5 ОН HO-3FH 4 он H 1 H-4 H-5FOH OH 2. 3 6 CH2OH Alpha-D-glucofuranose H OH Alpha-D-glucofuranose HOH2C- он но H. HO- он H но H OH FHO- CH2OH Beta-D-glucofuranose Beta-D-glucofuranose

Cyclic forms of D-glucose: Haworth formula The furanose and pyranose forms of D-glucose can be presented using Haworth formula. The following templates are used for this formula. Note the numbering of the carbon atoms and the anomeric carbon (this carbon defines the alpha and beta isomer). Furanose template (furan) Pyranose template (pyran) anomeric carbon anomeric carbon Compare the Fisher and Haworth formula of D-glucofuranose and D-glucopyranose. Notice that the groups attached to C-1, C-2, and C-3 on the left side of the Fisher formula are written above the plane of the furanose template. Fisher formula Haworth formula H FOH H-2FOH 0 HOH,Č 5 ОН HO-3FH 4 он H 1 H-4 H-5FOH OH 2. 3 6 CH2OH Alpha-D-glucofuranose H OH Alpha-D-glucofuranose HOH2C- он но H. HO- он H но H OH FHO- CH2OH Beta-D-glucofuranose Beta-D-glucofuranose

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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Cyclic forms of D-glucose: Haworth formula The furanose and pyranose forms of D-glucose can be presented using Haworth formula. The following templates are used for this formula. Note the numbering of the carbon atoms and the anomeric carbon (this carbon defines the alpha and beta isomer). Furanose template (furan) Pyranose template (pyran) anomeric carbon anomeric carbon Compare the Fisher and Haworth formula of D-glucofuranose and D-glucopyranose. Notice that the groups attached to C-1, C-2, and C-3 on the left side of the Fisher formula are written above the plane of the furanose template. Fisher formula Haworth formula H FOH H-2 HOH,č 5 -OH FOH- H HO-3H 4 он H 1 H-4 H-5 H OH 3 6 CH2OH H OH Alpha-D-glucofuranose Alpha-D-glucofuranose HOH2C- он OH но H FOH- OH Но H H. OH H ČH2OH Beta-D-glucofuranose Beta-D-glucofuranose
Transcribed Image Text:Cyclic forms of D-glucose: Haworth formula The furanose and pyranose forms of D-glucose can be presented using Haworth formula. The following templates are used for this formula. Note the numbering of the carbon atoms and the anomeric carbon (this carbon defines the alpha and beta isomer). Furanose template (furan) Pyranose template (pyran) anomeric carbon anomeric carbon Compare the Fisher and Haworth formula of D-glucofuranose and D-glucopyranose. Notice that the groups attached to C-1, C-2, and C-3 on the left side of the Fisher formula are written above the plane of the furanose template. Fisher formula Haworth formula H FOH H-2 HOH,č 5 -OH FOH- H HO-3H 4 он H 1 H-4 H-5 H OH 3 6 CH2OH H OH Alpha-D-glucofuranose Alpha-D-glucofuranose HOH2C- он OH но H FOH- OH Но H H. OH H ČH2OH Beta-D-glucofuranose Beta-D-glucofuranose
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