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Chapter 28: Question 28.29 (page 1135)

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

Short Answer

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Answer

Hydrolysis of α-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→4α 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 αanomer and β 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 αD-glucose and βD-glucose. The structures and the reaction are as shown:

Hydrolysis of α-anomer of maltose

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Most popular questions from this chapter

Which aldoses are oxidized to optically inactive aldaric acids: (a) D-erythrose; (b) D-lyxose; (c) D-galactose?

A 2-ketohexose is reduced with NaBH4 in CH3OH to form a mixture of D-galactitol and D-talitol. What is the structure of the 2-ketohexose?

D-Arabinose can exist in both pyranose and furanose forms.

  1. Draw the αandβanomers of D-arabinofuranose.
  2. Draw the αandβ anomers of D-arabinopyranose.

What two aldohexoses yield d-arabinose upon Wohl degradation?

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