What is the most stable chair conformation of glucose?
The most stable form of glucose (blood sugar) is a six-membered ring in a chair conformation with its five substituents all in equatorial positions.
What are the conformations of glucose?
Glucose, in its most abundant form in solution, is a six-membered ring adopting a chair conformation with all substituents equatorial. The lower energy chair conformation is the one with three of the five substituents (including the bulky –CH2OH group) in the equatorial position.
Which one of the following conformations of glucose is most stable?
chair conformation
The most stable form of the common sugar glucose contains a six-membered ring in the chair conformation with all the substituents equatorial.
What chair conformation is least stable?
The chair conformation is the most stable conformation of cyclohexane. A second, much less stable conformer is the boat conformation.
Which chair conformation is lowest in energy?
The lower energy chair conformation is the one with three of the five substituents (including the bulky –CH2OH group) in the equatorial position. Exercise 3.7: Draw the two chair conformations of the six-carbon sugar mannose, being sure to clearly show each non-hydrogen substituent as axial or equatorial.
How do you draw d glucose?
1 Answer
- Convert to a Haworth Projection.
- Draw a basic Haworth projection with the ring oxygen at the top.
- Draw a CH2OH on C-5 .
- Draw an OH below the ring on C-1 for the α form (draw it above the ring for the β form).
- Draw all the OH groups on the right side of the Fischer projection on the bottom of the ring.
What is an equatorial position?
Equatorial: In cyclohexane, a bond which is perpendicular to the axis of the ring (i.e., the bond lies along the equator of the chair), or a group attached by such a bond. A = axial positions; E = equatorial positions.