Exam 5: Stereochemistry

What term describes the structural relationship between (2R,3R,4S)-2,3,4-trichloroheptane and (2R,3R,4R)-2,3,4-trichloroheptane?

Is the molecule shown below chiral or achiral? (CH₃)₃CCH(CH₃)₂

How many asymmetric carbons are present in the compound below?

Compounds that rotate the plane of polarized light clockwise are called ________.

The specific rotation of pure (-)-2-butanol is -13.5°. What % of a mixture of the two enantiomeric forms is the (+)-form if the specific rotation of this mixture is +7.0°?

Can the molecule shown below be properly described as a meso compound?

Can the molecule shown below be properly described as a meso compound?

Is the molecule shown below chiral or achiral?

If possible, draw the structure of any diastereomer of the molecule shown below.

Draw the Fischer projection of (S)-2-hydroxybutanoic acid, CH₃CH₂CH(OH)COOH.

Draw the structure of any diastereomer of (2S, 3R)-2,3-dichloropentane. Take particular care to indicate three-dimensional stereochemical detail properly.

Captopril is used to treat high blood pressure and congestive heart failure. Label the chiral centers as R or S.

Which of the following terms best describes the pair of compounds shown: $\underline{\text{ enantiomers, diastereomers }}$ , or $\underline{\text{ the same compound? }}$

How many asymmetric carbons are present in the compound below?

Stereoisomers which are not mirror image isomers are ________.

(-)-Lactic acid has a specific rotation of -3.8°. What is the specific rotation of a solution containing 7.5 g of (-)-lactic acid and 2.5 g of (+)-lactic acid?

Is the molecule shown below chiral or achiral?

Translate the structure below to a Fischer projection.

How many asymmetric carbons are present in the compound below?

One of the stereoisomers of the following oblongolide structure is a natural product isolated from a fungus and has been found to contain antiviral and cytotoxic activities (J. Nat. Prod. $\textbf{ 2010, }$ 55). How many stereoisomers exist for this structure?