Practicing Success

Target Exam

CUET

Subject

Chemistry

Chapter

Organic: Biomolecules

Question:

What is the name of the given structure? 

Options:

α-D-(+)-glucopyranose

β-D-(+)-glucofuranose

α-D-(+)-glucofuranose

β-D-(+)-glucopyranose

Correct Answer:

α-D-(+)-glucopyranose

Explanation:

The correct answer is option 1. α-D-(+)-glucopyranose.

The α and β forms of glucose can be represented as a six-membered ring called pyranose, resembling the organic compound pyran. Since the OH group of anomeric carbon is at the opposite side to the OH at \(C_3\) carbon, it is the α-form of glucopyranose.