7. Determine whether each of the following compounds is a reducing sugar: (Hint, you should convert from cyclic acetal or cyclic hemiacetal to be open chain form (Fischer projection). CH₂OH HO CH₂OH HO OCH3 HO OH OH OH OH
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- You have isolated a new trisaccharide from a new species of insect shown below that you are calling Jiminy-Cricketose. Draw the Hayworth Projection of the molecule to the right of it. НО,, НО НО НО ОН OH ОН ОН "ОН ОН ОНEach H↔H eclipsing interaction in ethane costs about 4.0 kJ/mol. How many such interactions are percent in cyclopropane? What fraction of the overall 115 kJ/mol (27.5 kcal/mol) strain energy of cyclopropane is due to torsional strain.!!!!! Br MULTIPLE CHOICE QUESTION CH₁ CH₁ The above molecules are identical enantiomers diastereomers Br
- a) Which of the following monosaccharides will react with Tollens' reagent? Circle all that аpply. СООН CH2OH CH2OH OCH3 но- H- ОН HO FH OH CH2OH CH2OH OH II III IV V b) Decide whether the disaccharide shown below is a reducing or non-reducing sugar CH2OH но Но- ОН CH2 но Но OH OH 우 오3. Draw the most stable chair conformation of (trans) 3-t-butylcyclohexanol. 4. State whether these two are: a) the same molecule b) different compounds that are not isomers c) constitutional isomers d) diastereomers e) enantiomers H CH3 CH₁ Br Br Br CH3 H Br H CH32. Convert the following line structure into a Fischer projection. ОН ОН LOH ӦН ОН 3. Which of the following molecules do you expect to have a higher boiling point, and why? Be sure to mention specific intermolecular interactions. vs. A B
- What is the reduction of D-erythrose? OH H. CH2OH Select the correct answer below: CH,OH OH H. OH H- OH CH2OHNeed help in E and F. Are stereogenic centers suppose to have 4 different molecules surround them?2. Draw a Fischer Projection of (2R,3R) erythrose. 3. Give a complete stereochemical name for the compound below, which is a 1,2,3-butanetriol. CH,ƠH НО — -H- НО — -- CH3
- ? Modify the given carbon skeleton to draw the major product(s). If a racemic mixture of enantiomers is expected, draw both enantiomers. Note: you can select a structure and use Copy and Paste to save drawing time. C A z + : 1) OsO4 2) NaHSO,/ H₂O H3C CH3 H с N O P S LL F CI Br I iWhich of the following represents a meso compound? a 6 C 1. 2. H CH, Br Br Br H ** *6 CH, H₂C 3) 3. H,C. H Br H 1) Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer. Br H₂C 2) Br CH,1) Below you are given the structures of the disaccharides lactose and trehalose. он он но он но но OH но но OH но он но но OH Lactose Trehalose a. Identify clearly the hemiacetal and acetal groups in these disaccharides and determine for each of these identified groups if they have a- or B-configuration.