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Chapter 28: Question 28.29 (page 1135)

Draw the 伪 anomer of maltose. What products are formed on hydrolysis of this form of maltose?

Short Answer

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Answer

Hydrolysis of 伪-anomer of maltose

Step by step solution

01

Maltose

The carbohydrate maltose is a disaccharide obtained from starch. It is present in barley. It consists of two glucose units joined by 1鈫�4伪 a glycoside bond.

02

Anomers

The diastereomers that differ in the configuration at the first carbon are anomers.

Maltose exists in two forms, and they differ in the configuration of the first carbon. That is 伪anomer and 尾 anomer, and both differ in the configuration at the first carbon.

03

Hydrolysis products of  -anomer of maltose

The hydrolysis of maltose produces two anomeric forms of glucose. They are 伪D-glucose and 尾D-glucose. The structures and the reaction are as shown:

Hydrolysis of 伪-anomer of maltose

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Most popular questions from this chapter

Consider the following six compounds (A-F).

How are the two compounds in each pair related? Choose from enantiomers, epimers, diastereomers but not epimers, constitutional isomers, and identical compounds.

  1. A and B
  2. A and C
  3. B and C
  4. A and D
  5. E and F

(a) Draw the more stable chair form of fucose, an essential monosaccharide needed in the diet and a component of carbohydrates on mammalian and plant cell surfaces. (b) Classify fucose as a D- or L-monosaccharide. (c) What two structural features are unusual in fucose?

Draw a stepwise mechanism for the following reaction.

Draw a stepwise mechanism for the following hydrolysis.

As we have seen in Chapter 28, monosaccharides can be drawn in a variety of ways, and in truth, often a mixture of cyclic compounds is present in a solution. Identify each monosaccharide, including its proper D, L designation, draw in a less-than-typical fashion.

(a.)

(b.)

(c.)

(d.)
See all solutions

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