Mannose is a naturally occurring sugar that is important to…
Mannose is a naturally occurring sugar that is important to human metabolism. Mannose can exist in an open chain form (D‑mannose) or can cyclize to form a cyclic structure (α-D‑mannopyranose). Answer the questions below about D‑mannose and α-D‑mannopyranose. Which of the Fischer projections (A-F) below represent D‑mannose? Which of the chair conformations (T-Z) below represent the MOST stable conformation of α-D‑mannopyranose? Which of the chair conformations (T-Z) below represent the LEAST stable conformation of α-D‑mannopyranose? How many total possible stereoisomers are there for α-D‑mannopyranose (including the one drawn)? How many diastereomers are possible for D-mannose? The anomeric center of a cyclic sugar is the newly formed chiral center resulting from the cyclization reaction. Which of the carbon atoms labeled 1-6 above is the anomeric center? Identify ONE chair conformation (T-Z) that represents the enantiomer of α-D‑mannopyranose. What is the relationship between the Fischer projections labeled C and F?