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Chapter 21: Q30P (page 1007)

What is the configuration about each of the asymmetric centres in aspartame?

Short Answer

Expert verified

The answer is:

Configuration of Aspartame

Step by step solution

01

Step-by-Step Solution Step 1: Aspartame

Aspartame is an essential artificial sweetener, much sweeter than sugar. It is a compound containing carbon, nitrogen, oxygen, and hydrogen.

02

Explanation

The configuration of the asymmetric centers is shown below.

Configuration of Aspartame

Both the asymmetric centers in the compound is of S configuration.

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Most popular questions from this chapter

Explain the difference in the \({\bf{p}}{{\bf{K}}_{\bf{a}}}\) values of the carboxyl groups of alanine, serine, and cysteine.

Why are buffer solutions of increasingly higher pH used to elute the column that generates the chromatogram shown in Figure 21.5? (Elutemeans wash out with a solvent.)

a. Which isomer—(R)-alanine or (S)-alanine—is d-alanine?

b. Which isomer—(R)-aspartate or (S)-aspartate—is d-aspartate?

c. Can a general statement be made relating R and S to d and l?

A mixture of amino acids that do not separate sufficiently when a single technique is used can often be separated by two-dimensional chromatography.In this technique, the mixture of amino acids is applied to a piece of filter paper and separated by chromatographic techniques. The paper is then rotated90°,and the amino acids are further separated by electrophoresis, producing a type of chromatogram called a fingerprint.Identify the spots in the fingerprint obtainedfrom a mixture of Ser, Glu, Leu, His, Met, and Thr.

Show the steps in the synthesis of the tetrapeptide Leu- Phe- Ala- Val
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