Q.Haworth formula of glucopyranose
Step 1. Draw a six-membered ring viewed edge-on (perpendicular to the paper), with one ring oxygen positioned between C-1 (front right) and C-5 (back right), and C-2, C-3, C-4 running along the front/bottom of the ring.
Step 2. Place substituents using the Fischer-to-Haworth conversion rule (a group on the right in the Fischer projection goes to the alpha-side/down in the Haworth formula, and vice versa): at C-2, -OH down; at C-3, -OH up; at C-4, -OH down; and the exocyclic -CH2OH (C-6) drawn pointing up from C-5.
Step 3. At C-1, the anomeric carbon, draw the -OH pointing DOWN (alpha-side) for alpha-D-glucopyranose, or pointing UP (beta-side) for beta-D-glucopyranose -- this is the one position that differs between the two anomers, all other ring positions being identical.
Step 4. Label the structure alpha-D-(+)-glucopyranose or beta-D-(+)-glucopyranose according to which anomeric orientation was drawn (Fig. 14.6).
Haworth ring: O in ring between C-5 and C-1; going clockwise from the ring O, C-1 (anomeric, -OH down for alpha/up for beta), C-2 (-OH down), C-3 (-OH up), C-4 (-OH down), C-5 (bears the -CH2OH at C-6, pointing up).
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