- α-D-fructofuranose is the six-membered cyclic form of D-fructose, a monosaccharide. It forms a furanose ring structure and the hydroxyl group at the anomeric carbon (C1) is in the axial position, which makes it α-D-fructofuranose.
- In the options, the structure in (1) is the correct representation of α-D-fructofuranose, showing the furanose ring and the correct orientation of the hydroxyl group at the anomeric carbon.
Thus, the correct answer is (1).