Question

Need help. I added the entire page because for some questions, you have to go back to previous questions

I appreciate your help

r excuses! Expect an email from me this evening. These sheets are your scratch paper. Assume any necessary workup for 1. Which compound conforms to the supposed molecular formula of a carbohydrate? Interestingly, the answer is uset in sunless tanning sprays and lotions. e not a- a. b. C. , for sure is? Inferestingly, fucose is part of the antigens that define Naturally occurring fucose, blood types 2. d. L e. not a.-d c. D a natural sweetener that is up to 300 times Structure 1.c. is? Interestingly, structure 1. c. (rhamnose) is found in sweeter than table sugar 3. b. beta gamma 넉 delta e. not a.-d a. alpha 4. Which compound would be used to make structure 1. c. by two Fischer synthesis cycles? Hint: Draw the open form (Fischer projection) of rhamsose, b. d. e. not a.-d C. 5, The correct answer to question 4 is? a. erythrose b. erythro c. threose 6. All the structures in question 4 can form a? a. furan b. pyran 7. When fucose (from question 2) is subjected to a Ruff degradation followed by NaBHa treatment, the product is? a. optically active b. optically inactive c. not a, or b. 8. Which structure from question 1, would probably not react with Tollen's reagent to make a silvered mirror on glass? d. threo e. not a.-d. c. both a. & b. d. not a.-c e. not a.-d. 9. In their open form (Fischer projection), rhamnose (structure 1.c.) and fucose (from question 2) are? a. enantiomers b. diastereomers but not epimers c. epimers d, constitutional isomers e, not a-d.

Answer 1

1. Answer is (a) because it is the only compound which has formula of carbohydrate C_n(H₂O)_n that is C₃(H₂O)₃. It is called dihydroxy acetone.

2. Answer is (d) that is L-fucose.

3. Answer is (a) that is alpha. It is also named as $\alpha$ -L-Rhamnopyranose.

4. Answer is (d)