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Chapter 28: Q43P (page 1148)

Draw a Haworth projection for each compound using the structures in Figures 28.4 and 28.5.

Short Answer

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Answer:

a.

b.

c.

Step by step solution

01

Haworth Projection

Haworth projection is the cyclic structure used for presenting the monosaccharides in 3-D. For D-sugar, CH2OH is drawn up, and in the case of L-sugar, the CH2OH is drawn down.

02

Haworth projection of  β-D-talapyranose

a. The β-D-talopyranose is a D-sugar means CH2OH is drawn upwards. It is a βanomer, and this means OH is up at C1.

Haworth projection ofβ-D-talopyranose

03

Haworth projection of α-D-galactopyranose

b. The α-D-galactopyranoseis a D-sugar means CH2OH is drawn upwards. It is an αanomer, and this means OH is down at C1.


Haworth projection ofα-D-galactopyranose

04

Haworth projection of α-D-tagatofuranose

The α-D-tagatofuranoseis a D-sugar means CH2OH is drawn upwards. It is an αanomer, and this means OH is down at C1.


Haworth projection ofα-D-tagatofuranose

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Most popular questions from this chapter

Convert each cyclic monosaccharide into its acyclic form.

(a.)

(b.)

(c.)

(d.)

Draw a stepwise mechanism for the following reaction.

What two aldoses yield D-xylose on Wohl degradation?

Draw both pyranose anomers of each aldohexose using a three-dimensional representation with a chair pyranose. Label each anomers as αandβ.

(a.)

(b.)

Classify each compound as a reducing or nonreducing sugar.

(a.)

(b.)

(c.)
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