Which of the following statements is true about the following molecules? Ph HOH CH3 III. A. I and II are nonsuperimposable mirror images of each other B. I and III are nonsuperimposable mirror images of each other C. I and III are identical D. Both A and C CH3 H- -OH Ph I. но- CH3 Ph 11.

Exhibit 5 for question 27 a CH2OH H H H H. OH CH2OH OH H H H H. ОН OH 27. Which 5-carbon sugar is found in DNA?

How many chiral carbon centers are there in the analog of morphine shown below? HO. HO O a. Three O b. Five c. Four d. Two H CH3

Please answer questions A through C I could not read the handwriting last time so please make sure I can read it please.

What are diastereomers? a. Constitutional isomers. b. Molecules with only one chiral center. c. Stereoisomers that are not mirror images of one another and are non-superimposable on one another. d. Stereoisomers that are mirror images of one another.

12 CH2OH 1 H H 10 OH H H OH 9 6 H OH CH2 O. H H 4K OH OH 1 H H 12 OH isomaltose OH 3 a. Determine any acetal and hemiacetal in isomaltose. Carbon 7 is the acetal carbon. Carbon 1 is the hemiacetal carbon. b. Determine the numbering of each monosaccharide ring. The lower monosaccharide is numbered 5,4,3,2,1 v. The upper monosaccharide is numbered 7,8,9,10,11 c. Classify the glycosidic linkage as a or ß, and determine its location. The glycosidic linkage is B The linkage is 6 → 7. V d. Is the hemiacetal drawn as an a or ß anomer? The hemiacetal is a 00

Drawing optical isomers 1. Locate the chiral centre- look for the carbon atom with four different groups attached. 2. Draw one enantiomer in a tetrahedral shape -chlo 1. Loca - put the chiral carbon atom at the centre and the four different groups in a tetrahedral shape around it. Don't try to draw the full structure of each group -it gets confusing, Just use the structural formulas. 3. Draw the mirror image of the enantiomer-put in a mirror line next to the enantiomer and then draw the mirror image of the enantiomer on the other side of it. Example Draw the two enantiomers of 2-hydroxybutanoic acid. The structure of 2-butanoic acid is shown below. 1. Locate the chiral centre 2. Draw one 3. Draw its mirror image beside it. enantiomer in a 1. La tetrahedral shape H H H C.CH,CH ICOOH C*COOH chiral centre H H. OH H;CH,C I HOOC H;CH,C ОН OH ОН

How many stereocenters (chiral centers) are in the cholesterol molecule? a. 6 b. 9 C. 5 d. 8 e 7

Aspartame is a popular sugar substitute. It is 150 times sweeter than sucrose so very little is needed to sweeten foods. Identify the chirality center(s), sometimes called chiral carbon atoms, in the aspartame molecule. Indicate a chirality center by adding an asterisk (*) next to the chiral atom.

Complete the table