of tion The Fischer projection for L-idose corresponds to which Haworth projection? ОН Н ОН Н Н CH₂OH Н ОН CH2OH Н Н ОН . O a. I O b. II О с. III O d. IV Н Н НО ОН -O НО ان Н Н- ОН Н CHO -H -ОН -H CH₂OH ОН Н ОН -ОН CH₂OH -O ОН Н К Н ОН Н ОН Н "I ОН Н Н CH2OH H ОН IV Н ОН Н OH Н ОН
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- Page 218 Draw all possible stereoisomers for each compound. Label pairs of enantiomers and diastereomers. Label any meso compound. 5.58 OH а. OH b. CI Br с. d.Which Haworth projection corresponds to this Fischer projection? с. a. НО НО н Н- НО Н НО Н- но- ОН H ОН ОН Н- Н H CHO ОН H Н -OH -Н CH₂OH -ОН ОН OH Н H -OH b, d. HO H НО Н ОН OH OH OH Н Н OH н OH Н OH -OH нIf a mixture has an ee of 30%, what is the percentage enantiomer) of each enantiomer? (ee = excess Select one: OA. 85%: 15% 70% 30% B. O C. 75%: 25% O D. 65%: 35%
- 3. How many stereogenic centres does the cholesterol have? А. 5 но В. 6 С. 7 cholesterol D. 8CH3 13. H - он ČH,CH; The Fischer projection above is of a. a D enantiomer O b. an L enantiomer c. both a D and L enantiomer d. neither a D nor an L enantiomerWhich of the following Haworth perspective structures matches the Fischer projection in the alpha (a) conformer? Н. H- OH OH но- H- OH CH2OH CH¿OH CH2OH CH2OH -о он ОН, H CH2OH о он ОН, ОН, OH ОН ОН ОН ОН ОН ОН Он ОН 1 3 4 Select one: а. None of the above b. 4 С. 3 d. 2 е. 1 I I
- 8. Draw the Fischer projection of the following compound. Br Br Ans: 9. Draw the Fischer projection of the following compound. ОН MeO₂C Ans: ОН 10. Draw the Fischer projection of the following compound. ОН ОН ОН ОН Ans: CO₂Me 11. Draw the Fischer projection of the following compound. ОН ОН ОН ОН potzolló) eri to ginenonderb eliot odt in umesticla ollConsider the following compounds: CO,H СНО ОНС. ОНС CO,H H3C H. H H3C ОН ČO,H H. CH3 HỌ A B (a) Label the asymmetric carbons as R or S on each compound (A - C). (b) Which compounds, if any, are enantiomers? diastereomers? identical?Which of the following disaccharides is a non-reducing sugar? НО O U О О НО- O A D B لیتا ОН ОН НО- ОН НО. ОН ОН A C НО НО ОН ОН ОН ОН прион HO OH но.... HO НО -ОН HO ОН в NH₂ OH то OH D II O -OH НО OH NH₂ OH
- CH3 CI CH2O The compounds H are H H H Select one: O a. constitutional isomers O b. enantiomers O c. two different compounds not isomeric O d. identical O e. diastereomersCH3 7. Draw a diastereomer of each molecule. a. C. Br H IOH OCH, OCH3 b. na astunelor sts med 해 d. BrWhat is the stereochemical relations ship between molecules A and B shown below? он C2H5 H. H. ČH3 F A A) They are identical OH B) They are enantiomers C) They are constitutional isomers D) They are diastereomers F