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The six-membered cyclic structure is called
Option: 1
Furanose
Option: 2
Pyranose
Option: 3
Hemiacetal
Option: 4
Hemiketal
Answers (1)
Ring Structure of Monosaccharides
- Monosaccharides can exist as a linear chain or as ring-shaped molecules.
- The ring shaped is formed in the aqueous solution.
- When the monosaccharides cyclize to form rings, they typically form two types of rings as furanose or pyranose.
- Furanose is a five-membered ring structure.
- Pyranose is a six-membered ring structure.
- In case of aldose sugars, the ring structure is formed when the alcohol group reacts with the aldehyde to produce a hemiacetal.
- In case of ketose sugars, the ring structure is formed when the alcohol group reacts with the ketone to produce hemiketal.
- Both reactions result in the ring-structure with a new asymmetric carbon called the anomeric carbon.
Pyranose is a six-membered ring structure.
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