Which of the following would be the correct Haworth projection for β-D-talose (linear form is shown on the left)?

Question

Quizplus · Accepted Answer

β-D-talose has a six-membered ring with a five-membered oxygen-containing ring fused to it, so it is a furanose. The OH group in the sixth carbon is positioned below the plane of the ring, meaning it must be positioned axial (thus the wedge with OH). The CH2OH group in the first carbon is positioned above the ring plane, meaning it must be positioned equatorial (thus the dashed line with CH2OH). The remaining substituents in the ring (H, OH, and CH2OH) follow the pattern of alternating axial and equatorial substituents. The correct Haworth projection is option D.

Which of the Following Would Be the Correct Haworth Projection