Question

Q7 Chirality a) What is the exact relationship between the two structures below? CHO HO H H CHO HO H HO CH CH\(_2\)OH CH\(_2\)OH [1+1+2+2= 6 marks] [1 mark] OH diastereomers / enantiomers / meso compound / stereoisomers b) The structure of (S)-naproxen, used an analgesic, is shown below. Draw the structural formula of (R)-naproxen which is a liver toxin. H\(_3\)C H HOOC OCH\(_3\) [ 1 mark] c) Assign (R) or (S) configuration to the molecule below: Hint: Assign priorities of the groups bonded to the stereocentre. Order of priority of groups bonded to stereo centre 1. 2. 3. 4. [1 + 1 = 2 marks] OH CHO HOH\(_2\)C H

          Q7 Chirality
a) What is the exact relationship between the two structures below?
CHO
HO
H
H
CHO
HO
H
HO
CH
CH\(_2\)OH
CH\(_2\)OH
[1+1+2+2= 6 marks]
[1 mark]
OH
diastereomers / enantiomers / meso compound / stereoisomers
b) The structure of (S)-naproxen, used an analgesic, is shown below.
Draw the structural formula of (R)-naproxen which is a liver toxin.
H\(_3\)C
H
HOOC
OCH\(_3\)
[ 1 mark]
c) Assign (R) or (S) configuration to the molecule below:
Hint: Assign priorities of the groups bonded to the stereocentre.
Order of priority of groups
bonded to stereo centre
1.
2.
3.
4.
[1 + 1 = 2 marks]
OH
CHO
HOH\(_2\)C
H

Q7 Chirality
a) What is the exact relationship between the two structures below?
CHO
HO
H
H
CHO
HO
H
HO
CH
CH2OH
CH2OH
[1+1+2+2= 6 marks]
[1 mark]
OH
diastereomers / enantiomers / meso compound / stereoisomers
b) The structure of (S)-naproxen, used an analgesic, is shown below.
Draw the structural formula of (R)-naproxen which is a liver toxin.
H3C
H
HOOC
OCH3
[ 1 mark]
c) Assign (R) or (S) configuration to the molecule below:
Hint: Assign priorities of the groups bonded to the stereocentre.
Order of priority of groups
bonded to stereo centre
1.
2.
3.
4.
[1 + 1 = 2 marks]
OH
CHO
HOH2C
H

Added by Jeffrey S.

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