Molecules Incorporating Several Stereocenters Diastereomers

Many molecules contain several stereocenters. Because the configuration about each center can be R or S, several possible structures emerge, all of which are isomeric. 

Two stereocenters can give four stereoisomers chlorination of 2-bromobutane at C3 

Chlorinating racemic 2-bromobutane at C3 is stereochemically equivalent to pairing two different pairs ( racemates ) of shoes four combinations. 

Isoleucine is an important amino acid that cannot be made by the body and therefore needs to be an ingredient of our diet. Relatively high amounts of isoleucine are found in eggs, chicken, lamb, cheese, and fish. 

The two amino acids isoleucine and alloisoleucine are depicted below in staggered conformations. 

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Molecules Incorporating Several Stereocenters Diastereomers CHAPTER 5... 

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