Draw the Haworth structure of beta D-glucopyranose

Beta D-glucopyranose is one of the common forms of glucose. Its Haworth structure can be represented as a six-membered ring with hydroxyl groups attached. To illustrate this, we start with the cyclic form of glucose which is derived from a linear aldehyde structure. In the case of beta D-glucopyranose, the hydroxyl group on the anomeric carbon (C1) is positioned above the plane of the ring, which is characteristic of the beta anomer.

To sketch the structure:

  1. Draw a hexagon to represent the six-membered ring.
  2. Label the carbons in the ring from C1 to C6.
  3. For C1, place a hydroxyl group (-OH) above the plane of the ring, and the CH2OH group on C5 should also point above the ring in the beta form.
  4. Attach hydroxyl groups to C2, C3, and C4 with the following orientations: C2 – below, C3 – above, and C4 – below the ring.
  5. Place a -CH2OH group on C5, which is below in the beta anomer.

The final structure will display beta D-glucopyranose with specific orientations of hydroxyl groups, demonstrating its unique configuration in the beta form.

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