6. Are carbohydrates lipophilic or hydrophilic? Explain why.
7. Provide the product from D-erythrose reacting with nitric acid.
8. Draw the C-4 epimer of the following structure:
O=C
|
H-OH
|
HO-H
|
H-OH
|
CH2OH
9. Convert the structure to its most stable chair conformation.
HO
O
OH
NH2
OH
10. Draw the disaccharide Man($\beta$1 $\rightarrow$ 6)Man.